SIRIUSPOINT LTD, 10-K filed on 2/21/2025
Annual Report
v3.25.0.1
Cover - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2024
Feb. 18, 2025
Jun. 30, 2024
Entity Listings [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-36052    
Entity Registrant Name SIRIUSPOINT LTD.    
Entity Incorporation, State or Country Code D0    
Entity Tax Identification Number 98-1599372    
Entity Address, Address Line One Point Building    
Entity Address, Address Line Two 3 Waterloo Lane    
Entity Address, City Pembroke    
Entity Address, Country BM    
Entity Address, Postal Zip Code HM 08    
City Area Code 441    
Local Phone Number 542-3300    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 1.2
Entity Common Stock, Shares Outstanding   162,232,977  
Documents Incorporated by Reference
Part III incorporates information from certain portions of the registrant’s definitive proxy statement to be filed with the Securities and Exchange Commission within 120 days after the fiscal year ended December 31, 2024.
   
Entity Central Index Key 0001576018    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Common Shares, $0.10 par value      
Entity Listings [Line Items]      
Title of 12(b) Security Common Shares, $0.10 par value    
Trading Symbol SPNT    
Security Exchange Name NYSE    
8.00% Resettable Fixed Rate Preference Shares, Series B, $0.10 par value, $25.00 liquidation preference per share      
Entity Listings [Line Items]      
Title of 12(b) Security 8.00% Resettable Fixed Rate Preference Shares, Series B, $0.10 par value, $25.00 liquidation preference per share    
Trading Symbol SPNT PB    
Security Exchange Name NYSE    
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Audit Information
12 Months Ended
Dec. 31, 2024
Audit Information [Abstract]  
Auditor Name PricewaterhouseCoopers LLP
Auditor Location New York, New York
Auditor Firm ID 238
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Consolidated Balance Sheets - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Assets    
Debt securities, available for sale, at fair value, net of allowance for credit losses of $1.1 (2023 - $0.0) (cost - $5,143.8; 2023 - $4,754.6) $ 5,131.0 $ 4,755.4
Debt securities, trading, at fair value (cost - $187.3; 2023 - $568.1) 162.2 534.9
Short-term investments, at fair value (cost - $95.3; 2023 - $370.8) 95.8 371.6
Investments in related party investment funds, at fair value 116.5 105.6
Other long-term investments, at fair value (cost - $317.8; 2023 - $358.1) (includes related party investments at fair value of $100.7 (2023 - $173.7)) 200.0 310.1
Total investments 5,705.5 6,077.6
Cash and cash equivalents 682.0 969.2
Restricted cash and cash equivalents 212.6 132.1
Redemption receivable from related party investment fund 0.0 3.0
Due from brokers 11.2 5.6
Interest and dividends receivable 44.0 42.3
Insurance and reinsurance balances receivable, net 2,054.4 1,966.3
Deferred acquisition costs, net 327.5 308.9
Unearned premiums ceded 463.9 449.2
Loss and loss adjustment expenses recoverable, net 2,315.3 2,295.1
Deferred tax asset 297.0 293.6
Intangible assets 140.8 152.7
Other assets 270.7 175.9
Total assets 12,524.9 12,871.5
Liabilities    
Loss and loss adjustment expense reserves 5,653.9 5,608.1
Unearned premium reserves 1,639.2 1,627.3
Reinsurance balances payable 1,781.6 1,736.7
Deposit liabilities 17.4 134.4
Deferred gain on retroactive reinsurance 8.5 27.9
Debt 639.1 786.2
Due to brokers 18.0 6.2
Deferred tax liability 76.2 68.7
Liability-classified capital instruments 0.0 67.3
Share repurchase liability 483.0 0.0
Accounts payable, accrued expenses and other liabilities 269.2 278.1
Total liabilities 10,586.1 10,340.9
Commitments and contingent liabilities
Shareholders’ equity    
Common shares (issued and outstanding: 116,429,057; 2023 - 168,120,022) 11.6 16.8
Additional paid-in capital 945.0 1,693.0
Retained earnings 784.9 601.0
Accumulated other comprehensive income (loss), net of tax (4.1) 3.1
Shareholders’ equity attributable to SiriusPoint shareholders 1,937.4 2,513.9
Noncontrolling interests 1.4 16.7
Total shareholders’ equity 1,938.8 2,530.6
Total liabilities, noncontrolling interests and shareholders’ equity 12,524.9 12,871.5
Series B preference shares    
Shareholders’ equity    
Series B preference shares (par value $0.10; authorized and issued: 8,000,000) $ 200.0 $ 200.0
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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Debt securities, available for sale, allowance for credit losses $ 1.1 $ 0.0
Debt securities, available for sale, cost 5,143.8 4,754.6
Debt securities, trading, cost 187.3 568.1
Short-term investments, cost 95.3 370.8
Other long-term investments, cost 317.8 358.1
Related party investments at fair value $ 100.7 $ 173.7
Common shares, shares issued (in shares) 116,429,057 168,120,022
Common shares, shares outstanding (in shares) 116,429,057 168,120,022
Series B preference shares    
Preference shares, par value (in dollars per share) $ 0.10 $ 0.10
Preference shares, shares authorized (in shares) 8,000,000 8,000,000
Preference shares, shares issued (in shares) 8,000,000 8,000,000
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Consolidated Statements of Income - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Revenues      
Net premiums earned $ 2,343.5 $ 2,426.2 $ 2,318.1
Net investment income 303.6 283.7 113.3
Net realized and unrealized investment losses (88.7) (10.0) (225.5)
Net realized and unrealized investment gains (losses) from related party investment funds 9.7 (1.0) (210.5)
Net investment income and net realized and unrealized investment gains (losses) 224.6 272.7 (322.7)
Other revenues 184.2 97.8 82.8
Loss on settlement and change in fair value of liability-classified capital instruments (148.5) (59.4) 27.4
Total revenues 2,603.8 2,737.3 2,105.6
Expenses      
Loss and loss adjustment expenses incurred, net 1,368.5 1,381.3 1,588.4
Acquisition costs, net 516.9 472.7 461.9
Other underwriting expenses 181.7 196.3 184.5
Net corporate and other expenses 232.1 258.2 312.8
Intangible asset amortization 11.9 11.1 8.1
Interest expense 69.6 64.1 38.6
Foreign exchange (gains) losses (10.0) 34.9 (66.0)
Total expenses 2,370.7 2,418.6 2,528.3
Income (loss) before income tax (expense) benefit 233.1 318.7 (422.7)
Income tax (expense) benefit (30.7) 45.0 36.7
Net income (loss) 202.4 363.7 (386.0)
Net income attributable to noncontrolling interests (2.5) (8.9) (0.8)
Net income (loss) available to SiriusPoint 199.9 354.8 (386.8)
Dividends on Series B preference shares (16.0) (16.0) (16.0)
Net income (loss) available to SiriusPoint common shareholders, basic 183.9 338.8 (402.8)
Net income (loss) available to SiriusPoint common shareholders, diluted $ 183.9 $ 338.8 $ (402.8)
Earnings (loss) per share available to SiriusPoint common shareholders      
Basic earnings (loss) per share available to SiriusPoint common shareholders (in dollars per share) $ 1.06 $ 1.93 $ (2.51)
Diluted earnings (loss) per share available to SiriusPoint common shareholders (in dollars per share) $ 1.04 $ 1.85 $ (2.51)
Weighted average number of common shares used in the determination of earnings (loss) per share      
Basic (in shares) 166,537,394 163,341,448 160,228,588
Diluted (in shares) 169,470,681 169,607,348 160,228,588
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Consolidated Statements of Comprehensive Income (Loss) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Comprehensive income (loss)      
Net income (loss) $ 202.4 $ 363.7 $ (386.0)
Other comprehensive income (loss), net of tax      
Change in foreign currency translation adjustment 1.1 1.1 (5.0)
Unrealized gains (losses) from debt securities held as available for sale investments 1.3 38.9 (42.5)
Reclassifications from accumulated other comprehensive income (loss) (9.6) 8.1 2.7
Total other comprehensive income (loss) (7.2) 48.1 (44.8)
Comprehensive income (loss) 195.2 411.8 (430.8)
Net income attributable to noncontrolling interests (2.5) (8.9) (0.8)
Comprehensive income (loss) available to SiriusPoint $ 192.7 $ 402.9 $ (431.6)
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Consolidated Statements of Shareholders' Equity - USD ($)
$ in Millions
Total
Parent
Preference shares
Series B preference shares
Common shares
Additional paid-in capital
Retained earnings
Accumulated other comprehensive income (loss), net of tax
Change in foreign currency translation adjustment
Unrealized gains (losses) from debt securities held as available for sale investments
Noncontrolling interests
Balance, beginning of period at Dec. 31, 2021     $ 200.0 $ 16.2 $ 1,622.7 $ 665.0 $ (0.2) $ (0.2) $ 0.0  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Issuance of common shares, net     0.0              
Issuance of common shares, net       0.1 0.0          
Exercise of options       0.0 0.0          
Common shares repurchased and retired       (0.1) (4.9)          
Share compensation         23.5          
Net income (loss)           (386.0)        
Net income attributable to noncontrolling interests $ (0.8)         (0.8)        
Dividends on preference shares           (16.0)        
Change in foreign currency translation adjustment (5.0)             (5.0)    
Unrealized gains (losses) from debt securities held as available for sale investments (42.5)               (42.5)  
Reclassifications from accumulated other comprehensive income 2.7               2.7  
Balance, end of period at Dec. 31, 2022 2,082.6 $ 2,074.7 200.0 16.2 1,641.3 262.2 (45.0) (5.2) (39.8) $ 7.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Issuance of common shares, net     0.0              
Issuance of common shares, net       0.2 0.0          
Exercise of options       0.4 41.8          
Common shares repurchased and retired       0.0 0.0          
Share compensation         9.9          
Net income (loss)           363.7        
Net income attributable to noncontrolling interests (8.9)         (8.9)        
Dividends on preference shares           (16.0)        
Change in foreign currency translation adjustment 1.1             1.1    
Unrealized gains (losses) from debt securities held as available for sale investments 38.9               38.9  
Reclassifications from accumulated other comprehensive income 8.1               8.1  
Balance, end of period at Dec. 31, 2023 2,530.6 2,513.9 200.0 16.8 1,693.0 601.0 3.1 (4.1) 7.2 16.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Issuance of common shares, net     0.0              
Issuance of common shares, net       0.1 0.0          
Exercise of options       0.2 18.4          
Common shares repurchased and retired       (5.5) (777.2)          
Share compensation         10.8          
Net income (loss)           202.4        
Net income attributable to noncontrolling interests (2.5)         (2.5)        
Dividends on preference shares           (16.0)        
Change in foreign currency translation adjustment 1.1             1.1    
Unrealized gains (losses) from debt securities held as available for sale investments 1.3               1.3  
Reclassifications from accumulated other comprehensive income (9.6)               (9.6)  
Balance, end of period at Dec. 31, 2024 $ 1,938.8 $ 1,937.4 $ 200.0 $ 11.6 $ 945.0 $ 784.9 $ (4.1) $ (3.0) $ (1.1) $ 1.4
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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Operating activities      
Net income (loss) $ 202.4 $ 363.7 $ (386.0)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Share compensation 20.7 21.4 30.5
Net realized and unrealized loss on investments and derivatives 88.7 5.9 207.6
Net realized and unrealized (gain) loss on investment in related party investment funds (9.7) 1.0 210.5
Change in fair value of liability-classified capital instruments 31.9 59.4 (27.4)
Amortization of premium and accretion of discount, net (61.2) (67.1) (17.2)
Amortization of intangible assets 11.9 11.1 8.1
Other items, net (42.4) 23.7 (28.0)
Changes in assets and liabilities:      
Insurance and reinsurance balances receivable, net (87.9) (84.3) (164.7)
Deferred acquisition costs, net (18.6) (14.0) (76.1)
Unearned premiums ceded (14.7) (100.4) (106.0)
Loss and loss adjustment expenses recoverable, net (20.2) (918.9) (160.9)
Deferred tax asset/liability 11.2 (84.4) (53.9)
Other assets (110.0) (28.8) (36.9)
Interest and dividends receivable (1.7) (15.6) (18.4)
Loss and loss adjustment expense reserves 45.8 339.4 427.3
Unearned premium reserves 11.9 106.2 322.7
Deferred gain on retroactive reinsurance (19.4) 27.9 0.0
Reinsurance balances payable 44.9 923.6 125.3
Accounts payable, accrued expenses and other liabilities (8.9) 11.5 36.8
Net cash provided by operating activities 74.7 581.3 293.3
Investing activities      
Purchases of debt securities, available-for-sale (2,270.9) (3,579.0) (2,811.2)
Purchases of debt securities, trading 0.0 0.0 (852.4)
Purchases of short-term investments (432.9) (1,377.4) (2,802.5)
Purchases of other investments (28.6) (5.5) (70.6)
Proceeds from sales and maturities of debt securities, available-for-sale 1,921.4 1,516.8 242.8
Proceeds from sales and maturities of debt securities, trading and short-term investments 1,084.4 3,025.7 4,121.1
Proceeds from sales and maturities of other investments 64.0 81.7 864.0
Change in due to/from brokers, net 6.2 5.5 4.5
Net cash provided by (used in) investing activities 343.6 (332.2) (1,304.3)
Financing activities      
Taxes paid on withholding shares (9.8) (11.5) (7.1)
Repayment of loans under an agreement to repurchase 0.0 (18.0) 17.6
Cash dividends paid to preference shareholders (16.0) (16.0) (16.0)
Payment of redemption of debt (517.9) 0.0 0.0
Proceeds from issuance of debt, net of costs 393.9 0.0 0.0
Settlement of liability-classified capital instruments (99.2) (38.5) 0.0
Net proceeds from exercise of options and warrants 18.4 27.8 0.0
Net payments on deposit liability contracts (94.4) (6.1) (14.0)
Purchases of SiriusPoint common shares under share repurchase program (299.7) 0.0 (5.0)
Change in total noncontrolling interests, net (0.3)    
Change in total noncontrolling interests, net   0.8 0.8
Net cash used in financing activities (625.0) (61.5) (23.7)
Net increase (decrease) in cash, cash equivalents and restricted cash (206.7) 187.6 (1,034.7)
Cash, cash equivalents and restricted cash at beginning of year 1,101.3 913.7 1,948.4
Cash, cash equivalents and restricted cash at end of year 894.6 1,101.3 913.7
Supplementary information      
Interest paid in cash 66.4 46.1 39.2
Income taxes paid (received) in cash $ 50.6 $ 49.6 $ (2.2)
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Organization
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Organization
1. Organization
SiriusPoint Ltd. (together with its consolidated subsidiaries, “SiriusPoint” or the “Company”) was incorporated under the laws of Bermuda on October 6, 2011. Through its subsidiaries, the Company is a provider of global multi-line reinsurance and insurance products and services. 
These consolidated financial statements include the results of the Company and have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). All significant intercompany accounts and transactions have been eliminated.
Tabular amounts are in U.S. Dollars in millions, except share amounts, unless otherwise noted.
v3.25.0.1
Significant accounting policies
12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Significant accounting policies
2. Significant accounting policies
The following is a summary of the significant accounting and reporting policies adopted by the Company:
Use of estimates
The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The major estimates reflected in the Company’s consolidated financial statements include, but are not limited to, the loss and loss adjustment expense reserves, estimates of written and earned premiums and fair value of financial instruments.
Cash, cash equivalents and restricted cash
Cash and cash equivalents consist of cash held in banks and other short-term, highly liquid investments with original maturity dates of ninety days or less.
Restricted cash and cash equivalents consist of cash held in trust accounts securing obligations under certain reinsurance contracts and cash held in trust accounts securing letters of credit issued under credit facilities.
Premium revenue recognition
The Company recognizes premiums written ratably over the term of the related insurance policy or reinsurance treaty consistent with the timing of when the ceding company has recognized the written premiums. Premiums written include amounts reported by brokers and ceding companies, supplemented by the Company's own estimates of premiums where reports have not been received. The determination of premium estimates requires a review of the Company's experience with the ceding companies, managing general underwriters, familiarity with each market, the timing of the reported information, an analysis and understanding of the characteristics of each class of business and management's judgment of the impact of various factors, including premium or loss trends, on the volume of business written and ceded to the Company. On an ongoing basis, the Company's underwriters review the amounts reported by these third parties for reasonableness based on their experience and knowledge of the subject class of business, taking into account the Company's historical experience with the brokers or ceding companies. Changes in premium estimates are expected and may result in adjustments in any reporting period. Any subsequent adjustments arising on such estimates are recorded in the period in which they are determined.
Unearned premiums represent the portion of premiums written that relate to the remaining term of the underlying policies in force.
Reinsurance premiums ceded
The Company reduces the risk of losses on business written by reinsuring certain risks and exposures with other reinsurers. The Company remains liable to the extent that any reinsurer fails to meet its obligations and to the extent that the Company does not hold sufficient security for their unpaid obligations. Ceded premiums are written during the period in which the risks incept and are earned over the contract period in proportion to the period of risk covered. Unearned premiums ceded consist of the unexpired portion of insurance and reinsurance ceded.
Funds held
Funds held by ceding companies represent amounts due to the Company in connection with certain assumed reinsurance agreements in which the ceding company retains a portion of the premium to provide security against future loss payments. The funds held by ceding companies are generally invested by the ceding company and a contractually agreed interest amount is credited to the Company and recognized as investment income. These amounts are included in insurance and reinsurance balances receivable, net on the consolidated balance sheets.
Funds held under reinsurance treaties represent contractual payments due from the Company that have been retained to secure such obligations. These amounts are included in reinsurance balances payable on the consolidated balance sheets, and the associated interest is included in interest expense on the consolidated income statement.
Reinsurance
Reinsurance recoverables include claims we paid and estimates of unpaid losses and loss adjustment expenses that are subject to reimbursement under reinsurance and retrocessional contracts. The method for determining reinsurance recoverables for unpaid losses and loss adjustment expenses involves reviewing actuarial estimates of gross unpaid losses and loss adjustment expenses to determine our ability to cede unpaid losses and loss adjustment expenses under our existing reinsurance contracts. This method is continually reviewed and updated and any resulting adjustments are reflected in earnings in the period identified. Reinsurance premiums, commissions and expense reimbursements are accounted for on a basis consistent with those used in accounting for the original policies issued and the term of the reinsurance contracts. Amounts recoverable from reinsurers for losses and loss adjustment expenses for which the Company has not been relieved of its legal obligations to the policyholder are reported as assets.
Retroactive Reinsurance
A loss portfolio transfer is a retroactive reinsurance contract. If the cumulative loss and loss adjustment expenses ceded under a loss portfolio transfer exceed the consideration paid, the resulting gain from such excess is deferred and amortized into earnings in future periods in proportion to actual recoveries under the loss portfolio transfer. In any period in which there is a revised estimate of loss and loss adjustment expenses and the loss portfolio transfer is in a gain position, the deferred gain is recalculated as if the revised estimate was available at the inception date of the loss portfolio transfer and the change in the deferred gain is recognized in earnings. The deferred gain is disclosed as a separate line item in the Company’s consolidated balance sheets and changes in the deferred gain are recognized within losses incurred in the Company’s income statement.
Deferred acquisition costs
Deferred acquisition costs consist of commissions, brokerage expenses, excise taxes and other costs which are directly attributable to the successful acquisition or renewal of contracts and vary with the production of business. These costs are deferred and amortized over the period in which the related premiums are earned. Amortization of deferred acquisition costs are shown net of contractual commissions earned on reinsurance ceded within acquisition expenses, net in the consolidated statements of net income (loss).
Acquisition costs also include profit commissions which are calculated and accrued based on the expected loss experience for contracts and recorded when the current loss estimate indicates that a profit commission is probable under the contract terms.
The Company evaluates the recoverability of deferred acquisition costs by determining if the sum of expected loss and loss adjustment expenses, expected dividends to policyholders, unamortized acquisition costs, and maintenance costs exceeds related unearned premiums and anticipated investment income. If a loss is probable on the unexpired portion of contracts in force, a premium deficiency loss is recognized. As of December 31, 2024, deferred acquisition costs are considered to be fully recoverable and no premium deficiency has been recorded.
Loss and loss adjustment expense reserves
The Company’s loss and loss adjustment expense reserves include case reserves, reserves for losses incurred but not yet reported (“IBNR reserves”). Case reserves are established for losses that have been reported, but not yet paid. IBNR reserves represent the estimated loss and loss adjustment expenses that have been incurred by insureds and reinsureds but not yet reported to the insurer or reinsurer, including unknown future development on loss and loss adjustment expenses that are known to the insurer or reinsurer. IBNR reserves are established by management based on actuarially determined estimates of ultimate loss and loss adjustment expenses.
Inherent in the estimate of ultimate loss and loss adjustment expenses are expected trends in claim severity and frequency and other factors that may vary significantly as claims are settled. Accordingly, ultimate loss and loss adjustment expenses may differ materially from the amounts recorded in the consolidated financial statements. These estimates are reviewed regularly and, as experience develops and new information becomes known, the reserves are adjusted as necessary. Such adjustments, if any, are recorded in the consolidated statements of income (loss) in the period in which they become known.
Deposit liabilities
Certain contracts do not transfer sufficient insurance risk to be deemed reinsurance contracts and are accounted for using the deposit method of accounting. Management exercises judgment in determining whether contracts transfer sufficient risk to be accounted for as reinsurance contracts. Using the deposit method of accounting, a deposit liability, rather than written premium, is initially recorded based upon the consideration received less any explicitly identified premiums or fees. In subsequent periods, the deposit liability is adjusted by calculating the effective yield on the deposit to reflect actual payments to date and future expected payments. In some cases, the effective yield on the contract may be negative, which will result in the recognition of other income. Fixed interest credits on deposit accounted contracts are included in interest expense in the consolidated statements of net income (loss).
Service Fee Revenues
The Company’s consolidated MGA subsidiaries underwrite insurance products on behalf of the Company and third-party insurers. The Company earns commissions and fees associated with these policies which are recognized in Other Revenues. Generally, the performance obligation associated with these contracts is the placement of the policy, which is met on the effective date at which point the associated commission revenue is recognized in accordance with Accounting Standards Codification 606, Revenues from Contracts with Customers.
Fair value measurement
The Company determines the fair value of financial instruments in accordance with current accounting guidance, which defines fair value and establishes a three level fair value hierarchy based upon the transparency of inputs used in the valuation of an asset or liability. Fair value is defined as the price that the Company would receive to sell an asset or would pay to transfer a liability in an orderly transaction between market participants at the measurement date. The Company determines the estimated fair value of each individual security utilizing the highest level inputs available. Refer to Note 6 for additional information.
Investments
Short-term investments
Short-term investments consist of U.S. treasury bills, certificates of deposit and other securities, which, at the time of purchase, mature within a period of greater than three months but less than one year. Short-term investments are classified as trading securities, carried at fair value and disclosed as a separate line item in the consolidated balance sheets.
Debt Securities
The Company’s investments are classified as either trading securities or available for sale (“AFS”). Trading securities are carried at fair value with changes in fair value included in earnings in the consolidated statements of income (loss). AFS securities are held at fair value, net of an allowance for credit losses, and any decline in fair value that is believed to arise from factors other than credit is recorded as a separate component of accumulated other comprehensive income (loss) in the consolidated statement of shareholders’ equity. The Company has elected to classify debt securities, other than short-term investments, purchased on or after April 1, 2022 as AFS.
The fair value of the Company’s investments are based on quoted market prices, or when such prices are not available, by reference to broker or underwriter bid indications, industry recognized pricing vendors, and/or internal pricing valuation techniques. Investment transactions are recorded on a trade date basis with balances pending settlement included in due to/from brokers in the consolidated balance sheets.
Realized gains and losses are determined using cost calculated on a specific identification basis and are reported pre-tax in revenues. Dividends are recorded on the ex-dividend date. Income and expenses are recorded on the accrual basis including interest and premiums amortized and discounts accreted.
Other long-term investments
Other long-term investments consist primarily of hedge funds, private equity funds, and strategic investments. The fair values of hedge funds and private equity funds that produce net asset value (“NAV”) are generally recorded based upon the Company's proportionate interest in the underlying fund's NAV, which is deemed to approximate fair value or the equity method where applicable. In addition, due to a lag in reporting, some of the fund managers, fund administrators or both, are unable to provide final fund valuations as of the Company's reporting date. In these circumstances and where the fair value option is elected, the Company uses all credible information available to estimate fair value. This includes utilizing preliminary estimates reported by its fund managers and using information that is available to the Company with respect to the underlying investments, as necessary. The changes in fair value are reported in pre-tax revenues in net realized and unrealized investment losses. Actual final fund valuations may differ from the Company's estimates and these differences are recorded in the period they become known as a change in estimates.
Other long-term investments include certain strategic investments that are carried at fair value, using the equity method or the cost adjusted for market observable events less impairment method. For strategic investments carried at fair value, management uses commonly accepted valuation methods (i.e., income approach, market approach). Where appropriate to utilize equity method, the Company recognizes its share of the investees’ income in net realized and unrealized investment losses. Where criteria to be accounted for under the equity method is not met, we have elected to value our strategic investments at the cost adjusted for market observable events less impairment method, a measurement alternative in which the investment is measured at cost and remeasured to fair value when determined to be impaired or upon observable transactions prices becoming available. See Note 8 for additional information.
Investments in related party investment funds
The Company invests in Third Point Enhanced LP (“TP Enhanced Fund”), Third Point Venture Offshore Fund I LP (“TP Venture Fund”) and Third Point Venture Offshore Fund II LP (“TP Venture Fund II”), (collectively, the “Related Party Investment Funds”), which are related party investment funds. The Company’s investments in the funds are stated at their fair value, that generally represents the Company’s proportionate interest in the funds as reported by the fund based on the NAV provided by the fund administrator. Increases or decreases in such fair value are recorded within net realized and unrealized investment gains (losses) from related party investment funds in the Company’s consolidated statements of income (loss). The Company records contributions and withdrawals related to its investments in the funds on the transaction date.
Derivative financial instruments
The Company holds derivative contracts to manage credit risk, interest rate risk, currency exchange risk and other exposure risks. The Company uses derivatives in connection with its risk-management activities to economically hedge certain risks and to gain exposure to certain investments. The utilization of derivative contracts also allows for an efficient means by which to trade certain asset classes.
Fair values of derivatives are determined by using quoted market prices, industry recognized pricing vendors and counterparty quotes when available; otherwise fair values were based on pricing models that consider the time value of money, volatility and the current market and contractual prices of underlying financial instruments.
Share-based compensation
The Company accounts for its share-based compensation transactions using the fair value of the award at the grant date and accounts for forfeitures when they occur. Determining the fair value of share purchase options at the grant date requires estimation and judgment. The Company uses an option-pricing model (Black-Scholes) to calculate the fair value of share purchase options and used simplified method to develop the estimate of expected term, where appropriate.
For share-based compensation awards that contain both a service and performance condition, the Company recognizes compensation expense only for the portion of the award that is considered probable of vesting. Fair value of share-based compensation awards considered probable of vesting are expensed over the requisite service period. The probability of share-based awards vesting is evaluated at each reporting period. Share-based compensation awards that contain only service condition and share purchase options are expensed ratably over the requisite service period.
Defined benefit plans
Certain SiriusPoint employees in Europe participate in defined benefit plans. The liability for the defined benefit plans that is reported on the consolidated balance sheets is the current value of the defined benefit obligation at the end of the period,
reduced by the fair value of the plan's assets, with adjustments for actuarial gains and losses. The defined benefit pension plan obligation is calculated annually by independent actuaries. The current value of the defined benefit obligation is determined through discounting of expected future cash flows, using interest rates determined by current market interest rates. The service costs and actuarial gains and losses on the defined benefit obligation and the fair value on the plan assets are recognized in the consolidated statements of income (loss).
Other underwriting expenses
Other underwriting expenses primarily consist of general and administrative expenses and other operating income and expenses associated with underwriting activities, including salaries, benefits, information technology, and other costs.
Net corporate and other expenses
Net corporate and other expenses include services expenses, costs associated with operating as a publicly-traded company, non-underwriting activities, including service fee expenses from our MGA subsidiaries, and current expected credit losses (“CECL”) from our insurance and reinsurance balances receivable and loss and loss adjustment expenses recoverable, corporate insurance costs, and severance charges.
Foreign currency exchange
The U.S. dollar is the functional currency for the Company’s businesses except for the Canadian reinsurance operations of SiriusPoint America Insurance Company. The Company invests in securities denominated in foreign currencies. Assets and liabilities recorded in these foreign currencies are translated into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are translated using the average exchange rates for the period. Net foreign exchange gains and losses arising from the translation of functional currencies are reported in shareholders’ equity, in accumulated other comprehensive income (loss). As of December 31, 2024, the Company had net unrealized foreign currency translation losses of $3.0 million recorded in accumulated other comprehensive income (loss) on its consolidated balance sheet (December 31, 2023 - $4.1 million).
For transactions denominated in currencies other than functional currency, the resulting exchange gains and losses are reported as a component of net income (loss) in the period in which they arise within net realized and unrealized investment gains (losses) and net foreign exchange gains (losses).
Federal and foreign income taxes
The Company provides for income taxes for its operations in income tax paying jurisdictions. The Company’s provision relies on estimates and interpretations of currently enacted tax laws. 
The Company recognizes deferred tax assets and liabilities based on the temporary differences between the financial statement carrying amounts and the tax bases of assets and liabilities. A valuation allowance against deferred tax assets is recorded if it is more likely than not that all, or some portion, of the benefits related to deferred tax assets will not be realized. Any adjustments to deferred income taxes are accounted for as changes in estimates and are reflected in the consolidated statements of income (loss) in the year in which they are made. Adjustments could be material and could significantly impact earnings in the year they are recorded.
The Company records the total effect of changes in tax laws or rates on deferred tax balances as a component of the income taxes related to continuing operations for the period in which the law is enacted.
Variable and voting interest entities
We evaluate our investments to determine whether those investments are variable interest entities ("VIEs") or voting interest entities (“VOEs”) and whether consolidation is required. The Company consolidates the results of operations and financial position of all VOEs in which it has a controlling financial interest and VIEs in which it is considered to be the primary beneficiary. The consolidation assessment, including the determination as to whether an entity qualifies as a VOE or VIE, depends on the facts and circumstances surrounding each entity.
A VIE is a legal entity that does not have sufficient equity at risk to finance its activities without additional subordinated financial support or is structured such that equity investors lack the ability to make significant decisions relating to the entity’s operations through voting rights or do not substantively participate in the gains and losses of the entity. Consolidation of a VIE by its primary beneficiary is not based on majority voting interest, but is based on other criteria discussed below.
VIEs are consolidated by the primary beneficiary, that being the investor that has the power to direct the activities of the VIE and that will absorb a portion of the VIE’s expected losses or residual returns that could potentially be significant to the VIE. For VIEs the Company determines it has a variable interest in, it determines whether it is the primary beneficiary of a VIE by performing an analysis that principally considers: (i) the VIE’s purpose and design, including the risks the VIE was designed to create and pass through to its variable interest holders; (ii) the VIE’s capital structure; (iii) the terms between the VIE and its variable interest holders and other parties involved with the VIE; (iv) which variable interest holders have the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance; (v) which variable interest holders have the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE; and (vi) related party relationships. The Company reassesses its initial determination of whether the Company is the primary beneficiary of a VIE upon changes in facts and circumstances that could potentially alter the Company’s assessment.
Noncontrolling interests
The Company consolidates the results of entities in which it has a controlling financial interest. Noncontrolling interests are presented as a separate line within shareholders’ equity in the consolidated balance sheets. The Company records the portion of net income attributable to noncontrolling interests as a separate line within the consolidated statements of income (loss).
Earnings per share
Basic earnings per share is based on the weighted average number of common shares and participating securities outstanding during the period. The weighted average number of common shares excludes any dilutive effect of outstanding warrants, options and unvested restricted shares. Diluted earnings per share is based on the weighted average number of common shares and participating securities outstanding and includes any dilutive effects of warrants, options, and unvested restricted shares under share plans and are determined using the treasury stock method. U.S. GAAP requires that unvested share awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid (referred to as “participating securities”), be treated in the same manner as outstanding shares for earnings per share calculations. The Company treats certain of its unvested restricted shares as participating securities. In the event of a net loss, all participating securities, outstanding warrants, options and restricted shares are excluded from both basic and diluted loss per share since their inclusion would be anti-dilutive.
Leases
Leases in which substantially all of the risks and rewards of ownership are retained by the lessor are classified as operating leases. The Company does not have any leases classified as finance leases. For its operating leases, the Company recognizes lease assets and liabilities on the balance sheet, with the exception of leases with an original term of 12 months or less. Lease assets and liabilities are initially recognized and measured based on the present value of the lease payments.
Segment information
Under U.S. GAAP, operating segments are based on the internal information that management uses for allocating resources and assessing performance of the Company. The Company manages its business on the basis of two operating segments: Reinsurance and Insurance & Services.
Liability-classified capital instruments
As part of the consideration transferred in the acquisition of Sirius Group, the Company issued various instruments that were classified as liabilities based on their terms, notably the settlement features for each and any potential adjustments to the exercise price for the warrants issued. Liability-classified capital instruments reported in the consolidated balance sheets include Series A preference shares, Merger Warrants, Private Warrants, Sirius Group Public Warrants, Upside Rights and Contingent Value Rights. The liability-classified capital instruments are carried at fair value with changes in fair value included in “Loss on settlement and change in fair value of liability-classified instruments” in the consolidated statements of income (loss). As of December 31, 2024 all of the instruments were settled, exercised or expired. Refer to Note 21 “Commitments and contingencies” for additional information regarding the liability-classified financial instruments.
Intangible assets
The Company accounts for business combinations in accordance with Accounting Standards Codification ("ASC") Topic 805 Business Combinations, and intangible assets that arise from business combinations in accordance with ASC Topic 350 Intangibles – Goodwill and Other.
Intangible assets arising from our business acquisitions are classified as either finite or indefinite-lived intangible assets. Finite-lived intangible assets are amortized over their useful lives with the amortization expense being recognized in the consolidated statements of income (loss). The amortization periods approximate the period over which the Company expects to generate future net cash inflows from the use of these assets. All of these assets are subject to impairment testing for the impairment or disposal of long-lived assets when events or conditions indicate that the carrying value of an asset may not be fully recoverable from future cash flows. Indefinite-lived intangible assets are however not subject to amortization. The carrying values of intangible assets are reviewed for indicators of impairment at least annually. The Company initially evaluates indefinite-lived intangible assets using a qualitative approach to determine whether it is more likely than not that the fair value is greater than its carrying value. If the results of the qualitative evaluation indicate that it is more likely than not that the carrying value exceeds its fair value, the Company performs the quantitative test for impairment. If indefinite-lived intangible assets are impaired, such assets are written down to their fair values with the related expense recognized in the consolidated statements of income (loss).
Recent accounting pronouncements
Issued and effective as of December 31, 2024
In June 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions (“ASU 2022-03”). The amendment clarifies the guidance in Topic 820 on the fair value measurement of an equity security that is subject to a contractual sale restriction and requires specific disclosures related to such an equity security. ASU 2022-03 is effective for public business entities for fiscal years beginning after December 15, 2023 and interim periods within those fiscal years. This pronouncement did not have a material impact on the Company’s consolidated financial statements.
In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (“ASU 2023-07”). The amendment improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. ASU 2023-07 is effective for public business entities for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Refer to Note 4 “Segment reporting” for disclosure related to this new pronouncement.
Issued but not yet effective as of December 31, 2024
In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2023-09, Accounting Standards Update 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 023-09”). The amendment enhances the transparency and decision usefulness of income tax disclosures. ASU 2023-09 is effective for public business entities for annual periods beginning after December 15, 2024. This new pronouncement is not expected to have a material impact on the Company’s consolidated financial statements.
In November 2024, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”). The amendment aims to provide additional details about expenses deemed important to understanding an entity’s performance, assessing its prospects for future cash flows, and comparing its performance both over time and with that of other entities. ASU 2024-03 is effective for annual reporting periods beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027. This new pronouncement is not expected to have a material impact on the Company’s consolidated financial statements.
All other accounting pronouncements issued during the year ended December 31, 2024 were either not relevant to the Company or did not impact the Company’s consolidated financial statements.
Reclassifications
Certain comparative figures have been reclassified to conform to the current year presentation. These reclassifications had no impact on the previously reported net income (loss) or shareholders’ equity attributable to SiriusPoint shareholders.
v3.25.0.1
Significant transactions
12 Months Ended
Dec. 31, 2024
Insurance [Abstract]  
Significant transactions
3. Significant transactions
CM Bermuda Transactions
Series A Preference Shares Settlement and Share Repurchase
On August 1, 2024, the Company entered into a Confidential Settlement and Mutual Release Agreement (the “Settlement Agreement”), and concurrently therewith, a Share Repurchase Agreement (the “Share Repurchase Agreement” and, together with the Settlement Agreement, collectively, the “CMIG Series A and Repurchase Agreement”), in each case, with CM Bermuda Limited (“CM Bermuda”) and CMIG International Holding Pte. Ltd.
The Company paid CM Bermuda a total consideration of $261.3 million upon the closing of the transactions under the CMIG Series A and Repurchase Agreement. Pursuant to the Settlement Agreement, the Company paid CM Bermuda for full satisfaction and discharge of all obligations and all other claims of any nature related to the Company’s Series A Preference Shares held by CM Bermuda and the related Certificate of Designation of Series A Preference Shares of the Company, and recorded a loss of $90.7 million in Loss on settlement and change in fair value of liability classified instruments in the Company’s consolidated income statement during the year ended December 31, 2024. All Series A Preference shares held by CM Bermuda were cancelled and retired at the closing of the transaction. Pursuant to the Share Repurchase Agreement, the Company repurchased 9,077,705 of the Company’s issued and outstanding common shares held by CM Bermuda for $125.0 million, which had a repurchase date fair value of $129.7 million. The repurchased shares were cancelled and retired.
Merger Warrant Settlement and Share Repurchase
On December 30, 2024, the Company entered into a Securities Purchase Agreement (the “CMIG Securities Purchase Agreement”) with CM Bermuda. The CMIG Securities Purchase Agreement provides that, subject to the satisfaction or waiver of certain customary conditions set forth therein, the Company will repurchase all common shares and all warrants to purchase common shares held by CM Bermuda.
Upon the terms and subject to the conditions in the CMIG Securities Purchase Agreement, the Company will repurchase 20,991,337 warrants at $3.56 per warrant and 45,720,732 common shares at $14.25 per common share. The aggregate amount payable by the Company under the CMIG Securities Purchase Agreement will be approximately $733.0 million, including certain costs and expenses. Following the closing, CM Bermuda will have no remaining ownership interest in the Company. The common shares will be purchased into treasury and the warrants will be cancelled. The CMIG Securities Purchase Agreement contains customary representations, warranties and covenants of the parties. Consummation of the transactions contemplated by the CMIG Securities Purchase Agreement is subject only to the representations and warranties of each party being true and correct as of the closing date.
The closing is expected to be completed on or before February 28, 2025. The CMIG Securities Purchase Agreement contemplates that payment thereunder be made in two tranches. The first payment of $250.0 million was made concurrently with the execution of the CMIG Securities Purchase Agreement. At the closing, the Company will pay an additional $483.0 million to CM Bermuda, which is recorded in Share repurchase liability in the Company’s consolidated balance sheet as of December 31, 2024. The repurchase date fair value of the common shares was $649.2 million. Pursuant to the CMIG Securities Purchase Agreement, the Company recorded a loss of $25.9 million in Loss on settlement and change in fair value of liability classified instruments in the Company’s consolidated income statement, which includes $6.8 million of CM Bermuda’s costs and expenses.
In connection with the transactions contemplated by the CMIG Securities Purchase Agreement, the parties have agreed that, effective and contingent upon the closing, CM Bermuda’s appointed board representative, Meng Tee Saw, will resign from the Board and each committee of the Board of which he is a member; and the Company and CM Bermuda will terminate that certain Investor Rights Agreement, dated as of February 26, 2021, by and between SiriusPoint and CM Bermuda (the “IRA”). CM Bermuda has similarly placed an executed resignation letter and IRA termination agreement into escrow. Via the termination of the IRA, CM Bermuda will no longer have observer rights on the Board.
Workers’ Compensation Loss Portfolio Transfer
On April 30, 2024, SiriusPoint America Insurance Company (“SiriusPoint America”), a subsidiary of the Company, entered into the Master Agreement, dated as of April 30, 2024, made by and between SiriusPoint America and Clarendon National Insurance Company (“Clarendon National”), an insurer domiciled in Texas and an affiliate of Enstar Group Limited, a
Bermuda exempted company (“Enstar”). The Company received the appropriate regulatory approvals and the transaction closed on October 1, 2024.
Pursuant to the Master Agreement, on the closing of the transactions contemplated therein, among other documents, (a) SiriusPoint America and Clarendon National entered into a Loss Portfolio Transfer Reinsurance Agreement (the “2024 LPT”), pursuant to which SiriusPoint America cedes and Clarendon National assumes 100% of the net liability with respect to certain workers’ compensation insurance exposures of SiriusPoint America (the “Subject Business”) on a funds withheld basis, subject to the terms and conditions of the 2024 LPT including an aggregate limit; (b) SiriusPoint America and an affiliate of Clarendon National (the “Administrator”) entered into an Administrative Services Agreement concerning the Administrator’s authority and responsibility for certain administrative services related to the Subject Business, including claims handling; and (c) Enstar issued a Parental Guarantee in favor of SiriusPoint America guaranteeing Clarendon National’s obligations under the 2024 LPT. In certain circumstances and in lieu of the guarantee obligations provided thereunder, Clarendon National may post letters of credit as collateral securing Clarendon National’s reinsurance obligations with respect to the Subject Business. Immediately prior to the effective date of the 2024 LPT, SiriusPoint commuted certain ceded workers’ compensation reinsurance contracts, and the liabilities related to those commuted contracts are included in the Subject Business.
The transaction price of approximately $400 million covered SiriusPoint loss and unearned premium reserves, including commuted liabilities, and the reinsurance premium as of the December 31, 2023 valuation date. The subject loss reserves are now included in Loss and loss adjustment expenses recoverable in the Company’s consolidated balance sheets. Following the commutation of certain liabilities, the Company recognized a loss of $20.1 million at the effective date of October 1, 2024. The agreement between SiriusPoint America and Clarendon National is on a funds withheld basis, and the funds held liability (including reinsurance premium) of $297.2 million as of December 31, 2024 is included within Reinsurance balances payable in the Company’s consolidated balance sheets. The aggregate limit under the 2024 LPT is 150% of the premium paid.
SiriusPoint International Loss Portfolio Transfer
On March 2, 2023, the Company agreed, subject to applicable regulatory approvals and other closing conditions, to enter into a loss portfolio transfer transaction (“2023 LPT”), on a funds withheld basis, with Pallas Reinsurance Company Ltd., a subsidiary of the Compre Group, an insurance and reinsurance legacy specialist. The transaction covered loss reserves ceded initially estimated at $1.3 billion as of the valuation date of September 30, 2022, which were reduced to $905.6 million as of June 30, 2023 at closing, as a result of paid losses and favorable prior accident year reserve development recognized during the interim period. As of December 31, 2024, the Company recorded funds held payable of $543.2 million in Reinsurance balances payable and reinsurance recoverable of $569.2 million, and the Company’s estimate of deferred gain is $8.5 million. The 2023 LPT comprises several classes of business from 2021 and prior underwriting years. The aggregate limit under the 2023 LPT is 130% of roll forward reserves at the inception of the contract.
12. Third party reinsurance
In the normal course of business, the Company seeks to protect its businesses from losses due to concentration of risk and losses arising from catastrophic events by reinsuring with third-party reinsurers. Additionally, retrocession can be used as a mechanism to share the risks and rewards of business written and therefore can be used as a tool to align the Company’s interests with those of its counterparties. The Company remains liable for risks reinsured in the event that the reinsurer does not honor its obligations under reinsurance contracts.
The following tables provide a breakdown of the Company’s written and earned premiums and loss and loss adjustment expenses from direct business, reinsurance assumed and reinsurance ceded for the years ended December 31, 2024, 2023 and 2022:
202420232022
Premiums written:
Direct$1,824.3 $1,678.7 $1,403.9 
Assumed1,420.3 1,748.7 2,005.8 
Gross premiums written3,244.6 3,427.4 3,409.7 
Ceded(892.5)(989.5)(860.5)
Net premiums written$2,352.1 $2,437.9 $2,549.2 
202420232022
Premiums earned:
Direct$1,721.5 $1,498.0 $1,153.6 
Assumed1,357.0 1,826.0 1,915.2 
Gross premiums earned3,078.5 3,324.0 3,068.8 
Ceded(735.0)(897.8)(750.7)
Net premiums earned$2,343.5 $2,426.2 $2,318.1 
202420232022
Loss and loss adjustment expense:
Direct$1,070.7 $1,008.6 $778.0 
Assumed961.5 910.5 1,386.8 
Loss and loss adjustment expense incurred2,032.2 1,919.1 2,164.8 
Ceded(663.7)(537.8)(576.4)
Loss and loss adjustment expense incurred, net$1,368.5 $1,381.3 $1,588.4 
Because retrocessional reinsurance contracts do not relieve the Company of its obligation to its insureds, the collectability of balances due from the Company's reinsurers is important to its financial strength. The Company monitors the financial strength and ratings of retrocessionaires on an ongoing basis. As of December 31, 2024, the Company had loss and loss adjustment expenses recoverable of $2,315.3 million (December 31, 2023 - $2,295.1 million). Loss and loss adjustment expenses recoverable from the retrocessionaire are recorded as assets.
The following tables provide a listing of the Company’s loss and loss adjustment expenses recoverable by the reinsurer's S&P rating and the percentage of total recoverables as of December 31, 2024 and 2023. With certain reinsurers, if S&P's rating was not available, an equivalent AM Best or other major credit agency’s rating was used.
 December 31, 2024
Rating (1) (2)
GrossCollateralNet% of Net
Total
AA$195.0 $21.8 $173.2 17.9 %
A722.7 87.8 634.9 65.5 %
BBB or lower30.6 23.0 7.6 0.8 %
Not rated1,367.0 1,213.7 153.3 15.8 %
Total$2,315.3 $1,346.3 $969.0 100.0 %
December 31, 2023
Rating (1) (2)
GrossCollateralNet% of Net
Total
AA$294.5 $76.9 $217.6 24.4 %
A601.9 111.2 490.7 55.1 %
BBB or lower202.0 76.6 125.4 14.1 %
Not rated1,196.7 1,140.1 56.6 6.4 %
Total$2,295.1 $1,404.8 $890.3 100.0 %
(1) S&P’s ratings as detailed above are: "AAA" (Extremely Strong), "AA" (Very strong), "A" (Strong) and "BBB" (Adequate).
(2) Not rated represents reinsurers who are not rated by S&P, AM Best, or another major rating agency. Included in the “Not rated” category as of December 31, 2024 is $907.4 million related to Pallas Reinsurance Ltd. as a result of the 2023 LPT and the loss portfolio transfer completed on October 29, 2021 (the “2021 LPT”) and $291.4 million related to Clarendon National as a result of the 2024 LPT (2023 - $1,090.2 million related to Pallas Reinsurance Ltd. as a result of the 2023 LPT and 2021 LPT).
The following tables provide a listing of the five highest loss and loss adjustment expenses recoverable by reinsurer, along with percentage of total recoverable amount, the reinsurer's reinsurer rating by S&P, AM Best, or other major rating agencies and the percentage that the recoverable is collateralized as of December 31, 2024 and 2023:
 December 31, 2024
Balance% of TotalRating% Collateralized
Reinsurer:  
Pallas Reinsurance Company Ltd.$907.4 39.2 %Not rated89.9 %
Clarendon National Insurance Company
291.4 12.6 %Not rated102.0 %
Arch Reinsurance Ltd218.9 9.5 %A+— %
General Insurance Corporation of India153.8 6.6 %A-22.4 %
Allianz SE$74.4 3.2 %AA-17.3 %
December 31, 2023
Balance% of TotalRating% Collateralized
Reinsurer:
Pallas Reinsurance Company Ltd.$1,090.2 47.5 %Not rated96.5 %
Arch Reinsurance Ltd169.3 7.4 %A+1.0 %
General Insurance Corporation of India164.1 7.2 %BBB27.4 %
Pie Casualty Insurance Company98.0 4.3 %A-15.4 %
Allianz SE$94.4 4.1 %AA-54.0 %
v3.25.0.1
Segment reporting
12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
Segment reporting
4. Segment reporting
The determination of the Company’s business segments is based on the manner in which management monitors the performance of its operations. The Company reports two operating segments: Reinsurance and Insurance & Services. The Company's segments each have managers who are responsible for the overall profitability of their segments and who are directly accountable to the Company's chief operating decision maker, the Chief Executive Officer ("CEO"). The CEO assesses segment operating performance, allocates capital, and makes resource allocation decisions based on Segment income (loss). The Company does not manage its assets by segment; accordingly, total assets are not allocated to the segments.
Reinsurance
In the Reinsurance segment, the Company provides reinsurance products to insurance and reinsurance companies, government entities, and other risk bearing vehicles on a treaty or facultative basis. For reinsurance assumed, the Company participates in the reinsurance market with a global focus through the broker market distribution channel. The Company primarily writes treaty reinsurance, on both a proportional and excess of loss basis, and provides facultative reinsurance in some of its business lines. In the United States and Bermuda, the Company’s core focus is on distribution, risk and clients located in North America, while our international operation is focused primarily on distribution, risks and clients located in Europe.
The Reinsurance segment predominantly underwrites Casualty, Property and Specialty lines of business on a worldwide basis.
Casualty – the Company provides reinsurance to casualty insurers who underwrite a diverse range of casualty classes. The Company works with clients all over the world, including multi-national, nationwide and regional carriers, as well as risk retention groups and captives. The Company also partners with MGAs and sponsor cover holders. The Company’s underwriting focus is on proportional transactions covering all major commercial casualty lines, as well as professional liability with an emphasis on specialty niche classes of business, including personal lines.
Property – the Company works with leading global brokers as well as large national writers and regional companies. Underwriting is focused on providing critical catastrophe protection and worldwide coverage for natural perils, underwriting residential, commercial, and industrial risks in the United States, Europe and Asia. The Company’s property reinsurance offering includes: property catastrophe protection, risk excess of loss, cannabis - pro rata, building risk and structured property specifically in the United States.
Specialty - the Company’s business encompasses a broad range of worldwide reinsurance coverages, including proportional and excess of loss, treaty and facultative. Specialty business lines in the Reinsurance segment include Aviation & Space, Marine & Energy and Credit.
Insurance & Services
Through the Insurance & Services segment, the Company underwrites primary insurance in a number of sectors. The Insurance & Services segment includes Accident & Health, Casualty, and Specialty.
Accident and Health (“A&H”) – the Company provides flexible insurance products to meet the risk management needs of diverse populations in select markets. This includes employer groups, associations, affinity groups, higher education and other niche markets. The Company also owns 100% of IMG and Armada, who receive fees for services provided within Insurance & Services and to third parties. IMG offers a full line of international medical insurance products, trip cancellation programs, medical management services and 24/7 emergency medical and travel assistance. Armada operates as a supplemental medical insurance MGA.
Property & Casualty - the Company is a leading carrier for program administrators and managing general agents. The majority of its insurance business is written through partners in the property and casualty space, covering professional liability, workers’ compensation, and commercial auto lines in Bermuda, London, Europe, North America and around the world.
Specialty - SiriusPoint’s business encompasses a broad range of worldwide insurance coverages. Specialty business lines in the Insurance & Services segment include Aviation & Space, Marine & Energy, Credit and Mortgage.
Management uses segment income (loss) as the primary basis for assessing segment performance. Segment income (loss) is comprised of two components, underwriting income (loss) and net services income (loss). The Company calculates underwriting income (loss) by subtracting loss and loss adjustment expenses incurred, net, acquisition costs, net, and other underwriting expenses from net premiums earned. Net services income (loss) consists of services revenues (fee for service revenues), services expenses and services non-controlling (income) loss. This definition of segment income (loss) aligns with how business performance is managed and monitored. We continue to evaluate our segments as our business evolves and may further refine our segments and segment income (loss) measures. Certain items are presented in a different manner for segment reporting purposes than in the consolidated statements of income (loss). These items are reconciled to the consolidated presentation in the segment measure reclass column below. Included in Insurance & Services segment income (loss) are services noncontrolling loss (income) attributable to minority shareholders on non-wholly-owned subsidiaries. In addition, services revenues and services expenses are reconciled to other revenues and net corporate and other expenses, respectively.
Segment results are shown prior to corporate eliminations. Corporate eliminations are included in the elimination column below as necessary to reconcile to underwriting income (loss), net services income (loss), and segment income (loss) to the consolidated statements of income (loss).
Corporate includes the results of all runoff business, which represents certain classes of business that we no longer actively underwrite, including the effect of the restructuring of the underwriting platform announced in 2022 and certain reinsurance contracts that have interest crediting features. Corporate results also include asbestos and environmental and other latent liability exposures on a gross basis, which have mostly been ceded, as well as specific workers’ compensation and cyber programs which the Company no longer writes. In addition, revenue and expenses managed at the corporate level, including realized gains and losses, other investment income, including gains (losses) from strategic investments, net realized and
unrealized investment gains (losses) from related party investment funds, non services-related other revenues, non services-related net corporate and other expenses, intangible asset amortization, interest expense, foreign exchange (gains) losses and income tax (expense) benefit are reported within Corporate. The CEO does not manage segment results or allocate resources to segments when considering these items and they are therefore excluded from our definition of segment income (loss).
The following is a summary of the Company’s operating segment results for the years ended December 31, 2024, 2023 and 2022:
2024
ReinsuranceInsurance & ServicesCore
Eliminations (2)
CorporateSegment Measure ReclassTotal
Gross premiums written
$1,335.6 $1,840.8 $3,176.4 $— $68.2 $— $3,244.6 
Net premiums written 1,104.7 1,236.2 2,340.9 — 11.2 — 2,352.1 
Net premiums earned 1,045.1 1,154.0 2,199.1 — 144.4 — 2,343.5 
Loss and loss adjustment expenses incurred, net 554.3 714.1 1,268.4 (5.5)105.6 — 1,368.5 
Acquisition costs, net279.9 284.7 564.6 (121.4)73.7 — 516.9 
Other underwriting expenses 86.1 80.0 166.1 — 15.6 — 181.7 
Underwriting income (loss)124.8 75.2 200.0 126.9 (50.5)— 276.4 
Services revenues— 222.9 222.9 (132.8)— (90.1)— 
Services expenses— 176.2 176.2 — — (176.2)— 
Net services fee income— 46.7 46.7 (132.8)— 86.1 — 
Services noncontrolling income— (2.1)(2.1)— — 2.1 — 
Net services income— 44.6 44.6 (132.8)— 88.2 — 
Segment income (loss)124.8 119.8 244.6 (5.9)(50.5)88.2 276.4 
Net investment income303.6 — 303.6 
Net realized and unrealized investment losses(88.7)— (88.7)
Net realized and unrealized investment gains from related party investment funds9.7 — 9.7 
Other revenues94.1 90.1 184.2 
Loss on settlement and change in fair value of liability-classified capital instruments(148.5)— (148.5)
Net corporate and other expenses(55.9)(176.2)(232.1)
Intangible asset amortization(11.9)— (11.9)
Interest expense(69.6)— (69.6)
Foreign exchange gains10.0 — 10.0 
Income (loss) before income tax expense$124.8 $119.8 244.6 (5.9)(7.7)2.1 233.1 
Income tax expense— — (30.7)— (30.7)
Net income (loss)244.6 (5.9)(38.4)2.1 202.4 
Net income attributable to noncontrolling interests— — (0.4)(2.1)(2.5)
Net income (loss) available to SiriusPoint$244.6 $(5.9)$(38.8)$— $199.9 
Attritional losses$579.8 $734.5 $1,314.3 $(5.5)$112.8 $— $1,421.6 
Catastrophe losses49.5 5.3 54.8 — — — 54.8 
Prior year loss reserve development(75.0)(25.7)(100.7)— (7.2)— (107.9)
Loss and loss adjustment expenses incurred, net$554.3 $714.1 $1,268.4 $(5.5)$105.6 $— $1,368.5 
Underwriting Ratios: (1)
Attritional loss ratio55.5 %63.6 %59.8 %60.7 %
Catastrophe loss ratio4.7 %0.5 %2.5 %2.3 %
Prior year loss development ratio(7.2)%(2.2)%(4.6)%(4.6)%
Loss ratio53.0 %61.9 %57.7 %58.4 %
Acquisition cost ratio26.8 %24.7 %25.7 %22.1 %
Other underwriting expenses ratio8.2 %6.9 %7.6 %7.8 %
Combined ratio
88.0 %93.5 %91.0 %88.3 %
(1)Underwriting ratios are calculated by dividing the related expense by net premiums earned.
(2)Insurance & Services MGAs recognize fees for service using revenue from contracts with customers accounting standards, whereas insurance companies recognize acquisition expenses using insurance contract accounting standards. While ultimate revenues and expenses recognized will match, there will be recognition timing differences based on the different accounting standards.
2023
ReinsuranceInsurance & ServicesCore
Eliminations (2)
CorporateSegment Measure ReclassTotal
Gross premiums written
$1,271.0 $2,039.7 $3,310.7 $— $116.7 $— $3,427.4 
Net premiums written1,061.0 1,282.7 2,343.7 — 94.2 — 2,437.9 
Net premiums earned1,031.4 1,249.2 2,280.6 — 145.6 — 2,426.2 
Loss and loss adjustment expenses incurred, net490.3 815.4 1,305.7 (5.4)81.0 — 1,381.3 
Acquisition costs, net252.2 295.5 547.7 (137.2)62.2 — 472.7 
Other underwriting expenses82.7 94.3 177.0 — 19.3 — 196.3 
Underwriting income (loss)206.2 44.0 250.2 142.6 (16.9)— 375.9 
Services revenues(1.1)238.6 237.5 (149.6)— (87.9)— 
Services expenses— 187.8 187.8 — — (187.8)— 
Net services fee income (loss)(1.1)50.8 49.7 (149.6)— 99.9 — 
Services noncontrolling income— (8.5)(8.5)— — 8.5 — 
Net services income (loss)(1.1)42.3 41.2 (149.6)— 108.4 — 
Segment income (loss)205.1 86.3 291.4 (7.0)(16.9)108.4 375.9 
Net investment income283.7 — 283.7 
Net realized and unrealized investment losses(10.0)— (10.0)
Net realized and unrealized investment losses from related party investment funds(1.0)— (1.0)
Other revenues9.9 87.9 97.8 
Loss on settlement and change in fair value of liability-classified capital instruments(59.4)— (59.4)
Net corporate and other expenses(70.4)(187.8)(258.2)
Intangible asset amortization(11.1)— (11.1)
Interest expense(64.1)— (64.1)
Foreign exchange losses(34.9)— (34.9)
Income before income tax benefit$205.1 $86.3 291.4 (7.0)25.8 8.5 318.7 
Income tax benefit— — 45.0 — 45.0 
Net income291.4 (7.0)70.8 8.5 363.7 
Net income attributable to noncontrolling interests— — (0.4)(8.5)(8.9)
Net income available to SiriusPoint$291.4 $(7.0)$70.4 $— $354.8 
Attritional losses$618.9 $840.7 $1,459.6 $(5.4)$76.5 $— $1,530.7 
Catastrophe losses12.2 1.3 13.5 — 11.3 — 24.8 
Prior year loss reserve development(140.8)(26.6)(167.4)— (6.8)— (174.2)
Loss and loss adjustment expenses incurred, net$490.3 $815.4 $1,305.7 $(5.4)$81.0 $— $1,381.3 
Underwriting Ratios: (1)
Attritional loss ratio60.0 %67.3 %64.0 %63.1 %
Catastrophe loss ratio1.2 %0.1 %0.6 %1.0 %
Prior year loss development ratio(13.7)%(2.1)%(7.3)%(7.2)%
Loss ratio47.5 %65.3 %57.3 %56.9 %
Acquisition cost ratio24.5 %23.7 %24.0 %19.5 %
Other underwriting expenses ratio8.0 %7.5 %7.8 %8.1 %
Combined ratio80.0 %96.5 %89.1 %84.5 %
(1)Underwriting ratios are calculated by dividing the related expense by net premiums earned.
(2)Insurance & Services MGAs recognize fees for service using revenue from contracts with customers accounting standards, whereas insurance companies recognize acquisition expenses using insurance contract accounting standards. While ultimate revenues and expenses recognized will match, there will be recognition timing differences based on the different accounting standards.
2022
ReinsuranceInsurance & ServicesCore
Eliminations(2)
CorporateSegment Measure ReclassTotal
Gross premiums written$1,521.4 $1,884.2 $3,405.6 $— $4.1 $— $3,409.7 
Net premiums written1,199.6 1,346.0 2,545.6 — 3.6 — 2,549.2 
Net premiums earned1,213.1 1,086.8 2,299.9 — 18.2 — 2,318.1 
Loss and loss adjustment expenses incurred, net855.9 718.7 1,574.6 (5.2)19.0 — 1,588.4 
Acquisition costs, net310.3 273.2 583.5 (118.6)(3.0)— 461.9 
Other underwriting expenses113.8 62.8 176.6 — 7.9 — 184.5 
Underwriting income (loss)(66.9)32.1 (34.8)123.8 (5.7)— 83.3 
Services revenue(0.2)215.7 215.5 (133.4)— (82.1)— 
Services expenses— 179.2 179.2 — — (179.2)— 
Net services fee income (loss)(0.2)36.5 36.3 (133.4)— 97.1 — 
Services noncontrolling loss— 1.1 1.1 — — (1.1)— 
Net services income (loss)(0.2)37.6 37.4 (133.4)— 96.0 — 
Segment income (loss)(67.1)69.7 2.6 (9.6)(5.7)96.0 83.3 
Net investment income113.3 — 113.3 
Net realized and unrealized investment losses(225.5)— (225.5)
Net realized and unrealized investment losses from related party investment funds(210.5)— (210.5)
Other revenues0.7 82.1 82.8 
Loss on settlement and change in fair value of liability-classified capital instruments27.4 27.4 
Net corporate and other expenses(133.6)(179.2)(312.8)
Intangible asset amortization(8.1)— (8.1)
Interest expense(38.6)— (38.6)
Foreign exchange gains66.0 — 66.0 
Income (loss) before income tax benefit$(67.1)$69.7 2.6 (9.6)(414.6)(1.1)(422.7)
Income tax benefit— — 36.7 — 36.7 
Net income (loss)2.6 (9.6)(377.9)(1.1)(386.0)
Net income attributable to noncontrolling interests— — (1.9)1.1 (0.8)
Net income (loss) available to SiriusPoint$2.6 $(9.6)$(379.8)$— $(386.8)
Attritional losses$728.4 $721.8 $1,450.2 $(5.2)$26.8 $— $1,471.8 
Catastrophe losses136.3 1.6 137.9 — — — 137.9 
Prior year loss reserve development(8.8)(4.7)(13.5)— (7.8)— (21.3)
Loss and loss adjustment expenses incurred, net$855.9 $718.7 $1,574.6 $(5.2)$19.0 $— $1,588.4 
Underwriting Ratios: (1)
Attritional loss ratio60.1 %66.4 %63.1 %63.5 %
Catastrophe loss ratio11.2 %0.1 %6.0 %5.9 %
Prior year loss development ratio(0.7)%(0.4)%(0.6)%(0.9)%
Loss ratio70.6 %66.1 %68.5 %68.5 %
Acquisition cost ratio25.6 %25.1 %25.4 %19.9 %
Other underwriting expenses ratio9.4 %5.8 %7.7 %8.0 %
Combined ratio105.6 %97.0 %101.6 %96.4 %
(1)Underwriting ratios are calculated by dividing the related expense by net premiums earned.
(2)Insurance & Services MGAs recognize fees for service using revenue from contracts with customers accounting standards, whereas insurance companies recognize acquisition expenses using insurance contract accounting standards. While ultimate revenues and expenses recognized will match, there will be recognition timing differences based on the different accounting standards.
The following tables provide a breakdown of net premiums written by client location and underwriting location by reportable segment for the years ended December 31, 2024, 2023 and 2022:
2024
ReinsuranceInsurance & ServicesCorporateTotal
Net written premiums by client location:
United States and Canada$745.6 $679.0 $15.5 $1,440.1 
United Kingdom and Europe255.3 294.1 (1.7)547.7 
Bermuda, the Caribbean and Latin America28.1 165.0 (1.7)191.4 
Asia and Other75.7 98.1 (0.9)172.9 
Total net written premiums by client location$1,104.7 $1,236.2 $11.2 $2,352.1 
Net written premiums by underwriting location:
United States and Canada$447.5 $603.4 $(5.8)$1,045.1 
United Kingdom and Europe429.9 467.5 (6.4)891.0 
Bermuda, the Caribbean and Latin America227.3 165.3 23.4 416.0 
Total net written premiums by underwriting location$1,104.7 $1,236.2 $11.2 $2,352.1 
2023
ReinsuranceInsurance & ServicesCorporateTotal
Net written premiums by client location:
United States and Canada$750.6 $914.2 $4.1 $1,668.9 
United Kingdom and Europe172.1 243.4 4.1 419.6 
Bermuda, the Caribbean and Latin America(2.1)(2.4)(1.4)(5.9)
Asia and Other140.4 127.5 87.4 355.3 
Total net written premiums by client location$1,061.0 $1,282.7 $94.2 $2,437.9 
Net written premiums by underwriting location:
United States and Canada$516.6 $653.2 $92.0 $1,261.8 
United Kingdom and Europe345.9 280.7 4.4 631.0 
Bermuda, the Caribbean and Latin America198.5 348.8 0.7 548.0 
Asia and Other— — (2.9)(2.9)
Total net written premiums by underwriting location$1,061.0 $1,282.7 $94.2 $2,437.9 
2022
ReinsuranceInsurance & ServicesCorporateTotal
Net written premiums by client location:
United States and Canada$746.9 $1,139.5 $0.5 $1,886.9 
United Kingdom and Europe241.6 120.5 3.1 365.2 
Bermuda, the Caribbean and Latin America171.4 54.6 — 226.0 
Asia and Other39.7 31.4 — 71.1 
Total net written premiums by client location$1,199.6 $1,346.0 $3.6 $2,549.2 
Net written premiums by underwriting location:
United States and Canada$569.2 $931.3 $0.5 $1,501.0 
United Kingdom and Europe384.4 255.0 0.4 639.8 
Bermuda, the Caribbean and Latin America243.6 159.7 2.7 406.0 
Asia and Other2.4 — — 2.4 
Total net written premiums by underwriting location$1,199.6 $1,346.0 $3.6 $2,549.2 
No contract contributed more than 10% of gross premiums written for the years ended December 31, 2024, 2023 and 2022.
v3.25.0.1
Cash, cash equivalents, restricted cash and restricted investments
12 Months Ended
Dec. 31, 2024
Cash and Cash Equivalents [Abstract]  
Cash, cash equivalents, restricted cash and restricted investments
5. Cash, cash equivalents, restricted cash and restricted investments
The following table provides a summary of cash and cash equivalents, restricted cash and restricted investments as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Cash and cash equivalents$682.0 $969.2 
Restricted cash securing letter of credit facilities (1)36.5 56.9 
Restricted cash securing reinsurance contracts (2)149.3 52.7 
Restricted cash held by managing general underwriters26.8 22.5 
Total cash, cash equivalents and restricted cash (3)894.6 1,101.3 
Restricted investments securing reinsurance contracts and letter of credit facilities (1) (2) (4)2,215.0 2,668.0 
Total cash, cash equivalents, restricted cash and restricted investments$3,109.6 $3,769.3 
(1)Restricted cash and restricted investments securing letter of credit facilities primarily pertains to letters of credit that have been issued to the Company’s clients in support of our obligations under reinsurance contracts. The Company will not be released from the obligation to provide these letters of credit until the reserves underlying the reinsurance contracts have been settled. The time period for which the Company expects each letter of credit to be in place varies from contract to contract but can last several years.
(2)Restricted cash and restricted investments securing reinsurance contracts pertain to trust accounts securing the Company’s contractual obligations under certain reinsurance contracts that the Company will not be released from until the underlying risks have expired or have been settled. Restricted investments include certain investments in debt securities, short-term investments and limited partnership interests in TP Enhanced Fund. The time period for which the Company expects these trust accounts to be in place varies from contract to contract, but can last several years.
(3)Cash, cash equivalents and restricted cash as reported in the Company’s consolidated statements of cash flows.
(4)Restricted investments include required deposits with certain insurance state regulatory agencies in order to maintain insurance licenses.
v3.25.0.1
Fair value measurements
12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Fair value measurements
6. Fair value measurements
U.S. GAAP disclosure requirements establish a framework for measuring fair value, including a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. The three-level hierarchy of inputs is summarized below:
Level 1 – Quoted prices available in active markets/exchanges for identical investments as of the reporting date.
Level 2 – Observable inputs to the valuation methodology other than unadjusted quoted market prices for identical assets or liabilities in active markets. Level 2 inputs include, but are not limited to, prices quoted for similar assets or liabilities in active markets/exchanges, prices quoted for identical or similar assets or liabilities in markets that are not active and fair values determined through the use of models or other valuation methodologies.
Level 3 – Inputs are based all or in part on significant unobservable inputs for the investment, and include situations where there is little, if any, market activity for the investment. The inputs applied in the determination of fair value require significant management judgment and estimation.
Inputs refer broadly to the assumptions that market participants would use in pricing the asset or liability, including assumptions about risk. For example, the risk inherent in a particular valuation technique used to measure fair value including such a pricing model and/or the risk inherent in the inputs to the valuation technique. Inputs may be observable or unobservable.
Observable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources other than those of the reporting entity. Unobservable inputs are inputs that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances.
In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment, and considers factors specific to the investment.
The following tables present the Company’s investments, categorized by the level of the fair value hierarchy as of December 31, 2024 and 2023:
December 31, 2024
 Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Total
 (Level 1) (Level 2) (Level 3)
Assets
Asset-backed securities$— $1,149.7 $— $1,149.7 
Residential mortgage-backed securities— 973.8 — 973.8 
Commercial mortgage-backed securities— 224.5 — 224.5 
Corporate debt securities— 1,899.9 — 1,899.9 
U.S. government and government agency859.0 — — 859.0 
Non-U.S. government and government agency— 24.1 — 24.1 
Total debt securities, available for sale859.0 4,272.0 — 5,131.0 
Asset-backed securities— 53.1 — 53.1 
Residential mortgage-backed securities— 48.7 — 48.7 
Commercial mortgage-backed securities— 51.8 — 51.8 
Corporate debt securities— 4.6 — 4.6 
U.S. government and government agency4.0 — — 4.0 
Total debt securities, trading4.0 158.2 — 162.2 
Short-term investments73.6 22.2 — 95.8 
Other long-term investments0.3 3.0 86.6 89.9 
Derivative assets— — 0.9 0.9 
$936.9 $4,455.4 $87.5 5,479.8 
Cost and equity method investments64.7 
Investments in funds valued at NAV161.9 
Total assets$5,706.4 
Liabilities
Derivative liabilities $— $— $14.3 $14.3 
Total liabilities$— $— $14.3 $14.3 
December 31, 2023
 Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Total
 (Level 1) (Level 2) (Level 3)
Assets
Asset-backed securities$— $880.7 $— $880.7 
Residential mortgage-backed securities— 902.8 — 902.8 
Commercial mortgage-backed securities— 204.1 — 204.1 
Corporate debt securities— 1,573.1 — 1,573.1 
U.S. government and government agency1,132.6 4.1 — 1,136.7 
Non-U.S. government and government agency— 58.0 — 58.0 
Total debt securities, available for sale1,132.6 3,622.8 — 4,755.4 
Asset-backed securities— 256.6 — 256.6 
Residential mortgage-backed securities— 57.2 — 57.2 
Commercial mortgage-backed securities— 67.8 — 67.8 
Corporate debt securities— 45.2 — 45.2 
U.S. Government and government agency98.1 — — 98.1 
Non-U.S. government and government agency— 10.0 — 10.0 
Total debt securities, trading98.1 436.8 — 534.9 
Short-term investments321.9 49.7 — 371.6 
Other long-term investments1.6 — 169.7 171.3 
Derivative assets— — 15.7 15.7 
$1,554.2 $4,109.3 $185.4 5,848.9 
Cost and equity method investments80.1 
Investments in funds valued at NAV164.3 
Total assets$6,093.3 
Liabilities
Liability-classified capital instruments$— $— $67.3 $67.3 
Derivative liabilities— — 6.4 6.4 
Total liabilities$— $— $73.7 $73.7 
During the years ended December 31, 2024 and December 31, 2023 the Company did not reclassify its assets or liabilities between Levels 2 and 3.
Valuation techniques
The Company uses outside pricing services to assist in determining fair values for its investments. For investments in active markets, the Company uses the quoted market prices provided by outside pricing services to determine fair value. In circumstances where quoted market prices are unavailable or are not considered reasonable, the Company estimates the fair value using industry standard pricing models and observable inputs such as benchmark yields, reported trades, broker-dealer quotes, issuer spreads, benchmark securities, bids, offers, prepayment speeds, reference data including research publications, and other relevant inputs. Given that many debt securities do not trade on a daily basis, the outside pricing services evaluate a wide range of fixed maturity investments by regularly drawing parallels from recent trades and quotes of comparable securities with similar features. The characteristics used to identify comparable debt securities vary by asset type and take into account market convention.
The techniques and inputs specific to asset classes within the Company’s debt securities and short-term investments for Level 2 securities that use observable inputs are as follows:
Asset-backed and mortgage-backed securities
The fair value of mortgage and asset-backed securities is primarily priced by pricing services using a pricing model that uses information from market sources and leveraging similar securities. Key inputs include benchmark yields, reported trades, underlying tranche cash flow data, collateral performance, plus new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data including issuer, vintage, loan type, collateral attributes, prepayment speeds, default rates, recovery rates, cash flow stress testing, credit quality ratings and market research publications.
Corporate debt securities
Corporate debt securities consist primarily of investment-grade debt of a wide variety of U.S. and non-U.S. corporate issuers and industries. The corporate fixed maturity investments are primarily priced by independent pricing services. When evaluating these securities, the independent pricing services gather information from market sources regarding the issuer of the security and obtain credit data, as well as other observations, from markets and sector news. Evaluations are updated by obtaining broker dealer quotes and other market information including actual trade volumes, when available. The independent pricing services also consider the specific terms and conditions of the securities, including any specific features which may influence risk.
U.S. government and government agency
U.S. government and government agency securities consist primarily of debt securities issued by the U.S. Treasury and mortgage pass-through agencies such as the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation and the Government National Mortgage Association. Fixed maturity investments included in U.S. government and government agency securities are primarily priced by independent pricing services. When evaluating these securities, the independent pricing services gather information from market sources and integrate other observations from markets and sector news. Evaluations are updated by obtaining broker dealer quotes and other market information including actual trade volumes, when available. The fair value of each security is individually computed using analytical models which incorporate option adjusted spreads and other daily interest rate data.
Non-U.S. government and government agency
Non-U.S. government and government agency securities consist of debt securities issued by non-U.S. governments and their agencies along with supranational organizations (also known as sovereign debt securities). Securities held in these sectors are primarily priced by independent pricing services who employ proprietary discounted cash flow models to value the securities. Key quantitative inputs for these models are daily observed benchmark curves for treasury, swap and high issuance credits. The independent pricing services then apply a credit spread for each security which is developed by in-depth and real time market analysis. For securities in which trade volume is low, the independent pricing services utilize data from more frequently traded securities with similar attributes. These models may also be supplemented by daily market and credit research for international markets.
U.S. states, municipalities, and political subdivisions
The U.S. states, municipalities and political subdivisions portfolio contains debt securities issued by U.S. domiciled state and municipal entities. These securities are generally priced by independent pricing services using the techniques for U.S. government and government agency securities.
Preferred stocks
The fair value of preferred stocks is generally priced by independent pricing services using an evaluated pricing model that calculates the appropriate spread over a comparable security for each issue. Key inputs include exchange prices (underlying and common stock of same issuer), benchmark yields, reported trades, broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including sector, coupon, credit quality ratings, duration, credit enhancements, early redemption features and market research publications.
Short-term investments
Short-term investments consist of U.S. treasury bills, certificates of deposit and other securities, which, at the time of purchase, mature within a period of greater than three months but less than one year. These investments are generally priced
by independent pricing services using the techniques described for U.S. government and government agency securities and Corporate debt securities described above.
Investments measured using Net Asset Value
The Company values its investments in limited partnerships, including its investments in related party investment funds, at fair value. The Company has elected the practical expedient for fair value for these investments which is estimated based on the Company’s share of the net asset value (“NAV”) of the limited partnerships, as provided by the independent fund administrator, as the Company believes it represents the most meaningful measurement basis for the investment assets and liabilities. The NAV represents the Company’s proportionate interest in the members’ equity of the limited partnerships.
The fair value of the Company's investments in certain hedge funds and certain private equity funds are also determined using NAV. The hedge fund's administrator provides quarterly updates of fair value in the form of the Company's proportional interest in the underlying fund's NAV, which is deemed to approximate fair value, generally with a three month delay in valuation. The private equity funds provide monthly, quarterly or semi-annual partnership capital statements primarily with a one or three month delay which are used as a basis for valuation. These private equity investments vary in investment strategies and are not actively traded in any open markets. Due to a lag in reporting, some of the fund managers, fund administrators, or both, are unable to provide final fund valuations as of the Company's reporting date. This includes utilizing preliminary estimates reported by its fund managers and using other information that is available to the Company with respect to the underlying investments, as necessary.
In order to assess the reasonableness of the NAVs, the Company performs a number of monitoring procedures on a monthly, quarterly and annual basis, to assess the quality of the information provided by the investment manager and fund administrator underlying the preparation of the NAV. These procedures include, but are not limited to, regular review and discussion of the fund’s performance with the investment manager.
These investments are included in investment in funds valued at NAV and excluded from the presentation of investments categorized by the level of the fair value hierarchy.
Level 3 Investments
Level 3 valuations are generated from techniques that use assumptions not observable in the market. These unobservable assumptions reflect the Company's assumptions, that market participants would use in valuing the investment. Generally, certain securities may start out as Level 3 when they are originally issued but as observable inputs become available in the market, they may be reclassified to Level 2.
The Company employs a number of procedures to assess the reasonableness of the fair value measurements for its other long-term investments, including obtaining and reviewing the audited annual financial statements of hedge funds and private equity funds and periodically discussing each fund's pricing with the fund manager. However, since the fund managers do not provide sufficient information to evaluate the pricing inputs and methods for each underlying investment, the inputs are considered to be unobservable.
The fair values of the Company's investments in private equity securities, private debt instruments, certain private equity funds, and certain hedge funds have been classified as Level 3 measurements. Private equity securities and private debt instruments are initially valued based on transaction price and their valuation is subsequently estimated based on available evidence such as a market transaction in similar instruments and other financial information for the issuer.
For strategic investments carried at fair value, management either engages a third-party valuation specialist to assist in determination of the fair value based on commonly accepted valuation methods (i.e., income approach, market approach) as of the valuation date or performs valuation internally. In addition, investors fair value analyses prepared by third party valuation specialists working with strategic investment operating management are referenced where available. Where criteria to be accounted for under the equity method is not met, we have elected to value our strategic investments at the cost adjusted for market observable events less impairment method, a measurement alternative in which the investment is measured at cost and remeasured to fair value when determined to be impaired or upon observable transactions prices becoming available.
See Note 9 for additional information on the fair values of derivative financial instruments used for both risk management and investment purposes.
Underwriting-related derivatives
Underwriting-related derivatives include reinsurance contracts that are accounted for as derivatives. These derivative contracts are initially valued at cost which approximates fair value. In subsequent measurement periods, the fair values of these derivatives are determined using internally developed discounted cash flow models. As the significant inputs used to price these derivatives are unobservable, the fair values of these contracts are classified as Level 3.
The following tables present the reconciliation of all investments measured at fair value using Level 3 inputs for the years ended December 31, 2024 and 2023:
January 1,
2024
Transfers in to (out of) Level 3PurchasesSales
Realized and Unrealized Gains (Losses) (1)
December 31,
2024
Assets
Other long-term investments$169.7 $— $— $— $(83.1)$86.6 
Derivative assets15.7 — — — (14.8)0.9 
Total assets$185.4 $— $— $— $(97.9)$87.5 
Liabilities
Liability-classified capital instruments$(67.3)$— $— $215.8 $(148.5)$— 
Derivative liabilities(6.4)— — 1.1 (9.0)(14.3)
Total liabilities$(73.7)$— $— $216.9 $(157.5)$(14.3)
January 1,
2023
Transfers in to (out of) Level 3PurchasesSales
Realized and Unrealized Gains (Losses) (1)
December 31,
2023
Assets
Preferred stocks$3.2 $— $— $(2.3)$(0.9)$— 
Other long-term investments227.3 (25.3)6.6 (14.7)(24.2)169.7 
Derivative assets9.5 — 2.8 (13.7)17.1 15.7 
Total assets$240.0 $(25.3)$9.4 $(30.7)$(8.0)$185.4 
Liabilities
Liability-classified capital instruments$(21.4)$— $— $3.8 $(49.7)$(67.3)
Derivative liabilities(8.6)— (5.1)18.5 (11.2)(6.4)
Total liabilities$(30.0)$— $(5.1)$22.3 $(60.9)$(73.7)
(1)Total change in realized and unrealized gains (losses) recorded on Level 3 financial instruments is included in total net investment income and realized and unrealized investment gains in the consolidated statements of income (loss). Realized and unrealized gains (losses) related to underwriting-related derivative assets and liabilities are included in other underwriting expenses, net of foreign exchange (gains) losses, in the consolidated statements of income (loss). Realized and unrealized gains (losses) on liability-classified capital instruments are included in loss on settlement and change in fair value of liability-classified capital instruments, in the consolidated statements of income (loss).
For assets and liabilities that were transferred into Level 3 during the period, gains (losses) are presented as if the assets or liabilities had been transferred into Level 3 at the beginning of the period; similarly, for assets and liabilities that were transferred out of Level 3 during the period, gains (losses) are presented as if the assets or liabilities had been transferred out of Level 3 at the beginning of the period.
The following table includes financial instruments for which the carrying value differs from the estimated fair values as of December 31, 2024 and 2023. The fair values of the below financial instruments are based on observable inputs and are considered Level 2 measurements.
December 31, 2024December 31, 2023
Fair ValueCarrying ValueFair ValueCarrying Value
2024 Senior Notes$411.2 $394.8 n/an/a
2017 SEK Subordinated Notes228.7 244.3 206.6 267.9 
2016 Senior Notes— — 370.0 403.5 
2015 Senior Notes— — 115.2 114.8 
Series B preference shares$206.0 $200.0 $197.4 $200.0 
v3.25.0.1
Investments
12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Investments
7. Investments
The Company’s invested assets consist of investment securities and other long-term investments held for general investment purposes. The portfolio of investment securities includes debt securities available for sale, debt securities held for trading, short-term investments, and other long-term investments which are classified as trading securities with the exception of debt securities held as available for sale. Realized investment gains and losses on debt securities are reported in pre-tax revenues. Unrealized investment gains and losses on debt securities are reported based on classification. Trading securities flow through pre-tax revenues, whereas securities classified as available for sale (“AFS”) flow through other comprehensive income (loss).
For debt securities classified as AFS for which a decline in the fair value between the amortized cost is due to credit-related factors, an allowance is established for the difference between the estimated recoverable value and amortized cost with a corresponding impact to the consolidated statements of income (loss). The allowance is limited to the difference between amortized cost and fair value. A credit losses impairment assessment is performed on securities using both quantitative and qualitative factors. Qualitative factors include significant declines in fair value below amortized cost. Additionally, a qualitative assessment is also performed over debt securities to evaluate potential credit losses. Examples of qualitative indicators include issuer credit downgrades as well as changes to credit spreads.
Declines in fair value related to a debt security that do not relate to a credit loss are recorded as a component of accumulated other comprehensive income (loss).
Debt securities
The following tables provide the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses), and fair value of the Company's debt securities as of December 31, 2024 and 2023:
December 31, 2024
Cost or
amortized
cost
Gross
unrealized
gains
Gross
unrealized
losses
Net foreign
currency
gains
(losses)
Fair value
Debt securities, available for sale
Asset-backed securities$1,142.7 $11.2 $(4.2)$— $1,149.7 
Residential mortgage-backed securities985.8 8.3 (20.3)— 973.8 
Commercial mortgage-backed securities224.2 1.4 (1.1)— 224.5 
Corporate debt securities1,905.2 9.1 (10.4)(4.0)1,899.9 
U.S. government and government agency861.0 2.2 (4.2)— 859.0 
Non-U.S. government and government agency24.9 0.1 — (0.9)24.1 
Total debt securities, available for sale(1)
$5,143.8 $32.3 $(40.2)$(4.9)$5,131.0 
Debt securities, trading
Asset-backed securities$54.7 $— $(1.6)$— $53.1 
Residential mortgage-backed securities56.4 — (7.7)— 48.7 
Commercial mortgage-backed securities56.8 0.5 (5.5)— 51.8 
Corporate debt securities15.1 0.1 (10.6)— 4.6 
U.S. government and government agency4.3 — (0.3)— 4.0 
Total debt securities, trading$187.3 $0.6 $(25.7)$— $162.2 
December 31, 2023
Cost or
amortized
cost
Gross
unrealized
gains
Gross
unrealized
losses
Net foreign
currency
gains
(losses)
Fair value
Debt securities, available for sale
Asset-backed securities$882.2 $7.8 $(9.3)$— $880.7 
Residential mortgage-backed securities903.0 15.8 (16.0)— 902.8 
Commercial mortgage-backed securities204.0 1.6 (1.5)— 204.1 
Corporate debt securities1,569.6 12.0 (7.5)(1.0)1,573.1 
U.S. government and government agency1,137.8 5.5 (6.6)— 1,136.7 
Non-U.S. government and government agency58.0 0.2 (0.3)0.1 58.0 
Total debt securities, available for sale(1)
$4,754.6 $42.9 $(41.2)$(0.9)$4,755.4 
Debt securities, trading
Asset-backed securities$261.1 $0.6 $(5.1)$— $256.6 
Residential mortgage-backed securities67.0 — (9.8)— 57.2 
Commercial mortgage-backed securities76.7 0.1 (9.0)— 67.8 
Corporate debt securities52.2 — (7.0)— 45.2 
U.S. government and government agency100.8 — (2.7)— 98.1 
Non-U.S. government and government agency10.3 — (0.3)— 10.0 
Total debt securities, trading$568.1 $0.7 $(33.9)$— $534.9 
(1)As of December 31, 2024, the Company recorded an allowance for credit losses on the AFS portfolio of $1.1 million (December 31, 2023 - none).
As of December 31, 2024, 518 unique debt securities classified as AFS were in a gross unrealized loss position for greater than 12 months (December 31, 2023 - 718 unique debt securities). Refer to the tables below for the Company’s breakdown of AFS debt securities in a gross unrealized loss position as of December 31, 2024 and December 31, 2023.
December 31, 2024
12 Months or LessGreater than 12 MonthsTotal
Fair valueGross unrealized lossesFair valueGross unrealized lossesFair valueGross unrealized losses
Debt securities, available for sale
Asset-backed securities$180.4 $(1.8)$23.8 $(2.4)$204.2 $(4.2)
Residential mortgage-backed securities437.4 (7.9)223.9 (12.4)661.3 (20.3)
Commercial mortgage-backed securities67.4 (0.7)7.5 (0.4)74.9 (1.1)
Corporate debt securities738.5 (10.0)46.8 (0.4)785.3 (10.4)
U.S. government and government agency247.2 (3.0)62.7 (1.2)309.9 (4.2)
Total debt securities, available for sale
$1,670.9 $(23.4)$364.7 $(16.8)$2,035.6 $(40.2)
December 31, 2023
12 Months or LessGreater than 12 MonthsTotal
Fair valueGross unrealized lossesFair valueGross unrealized lossesFair valueGross unrealized losses
Debt securities, available for sale
Asset-backed securities$307.2 $(8.5)$17.8 $(0.8)$325.0 $(9.3)
Residential mortgage-backed securities298.9 (9.8)134.3 (6.2)433.2 (16.0)
Commercial mortgage-backed securities87.7 (0.9)28.9 (0.6)116.6 (1.5)
Corporate debt securities593.1 (4.0)191.1 (3.5)784.2 (7.5)
U.S. government and government agency370.7 (2.6)209.9 (4.0)580.6 (6.6)
Non-U.S. government and government agency18.6 (0.1)10.0 (0.2)28.6 (0.3)
Total debt securities, available for sale
$1,676.2 $(25.9)$592.0 $(15.3)$2,268.2 $(41.2)
The weighted average duration of the Company's debt securities, net of short positions in U.S. treasuries, as of December 31, 2024 was approximately 3.1 years, including short-term investments (2023 - 2.8 years).
The following table provides the cost or amortized cost and fair value of the Company's debt securities bifurcated into debt securities held for trading and AFS as of December 31, 2024 and 2023 by contractual maturity. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.
December 31, 2024December 31, 2023
Debt securities, AFSDebt securities, tradingDebt securities, AFSDebt securities, trading
Cost or
amortized cost
Fair valueCost or
amortized cost
Fair valueCost or
amortized cost
Fair valueCost or
amortized cost
Fair value
Due in one year or less$449.3 $448.2 $0.5 $0.5 $358.6 $357.2 $80.2 $79.7 
Due after one year through five years1,648.0 1,646.7 6.7 6.3 2,221.0 2,219.8 37.2 34.5 
Due after five years through ten years589.5 586.2 0.3 0.3 183.3 188.5 19.4 18.0 
Due after ten years104.3 101.9 11.9 1.6 2.5 2.3 26.6 21.3 
Mortgage-backed and asset-backed securities2,352.7 2,348.0 167.9 153.5 1,989.2 1,987.6 404.7 381.4 
Total debt securities$5,143.8 $5,131.0 $187.3 $162.2 $4,754.6 $4,755.4 $568.1 $534.9 
The following table summarizes the ratings and fair value of debt securities held in the Company's investment portfolio as of December 31, 2024 and 2023. Credit ratings are assigned based on ratings provided by nationally recognized statistical rating organizations.
December 31, 2024December 31, 2023
Debt securities, AFSDebt securities, tradingDebt securities, AFSDebt securities, trading
AAA$808.5 $74.0 $730.4 $248.4 
AA2,227.9 54.0 2,334.4 177.0 
A1,375.0 6.9 1,122.1 28.9 
BBB659.2 24.2 515.5 71.7 
Other60.4 3.1 53.0 8.9 
Total debt securities$5,131.0 $162.2 $4,755.4 $534.9 
As of December 31, 2024, the above totals included $161.2 million of sub-prime securities. Of this total, $94.9 million were rated AAA, $31.8 million rated AA, $8.2 million rated A, $24.9 million rated BBB, and $1.4 million were unrated. As of December 31, 2023, the above totals included $185.1 million of sub-prime securities. Of this total, $117.5 million were rated AAA, $37.7 million rated AA, $12.3 million were rated A, $13.3 million were rated BBB and $4.3 million were unrated.
Other long-term investments
The cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses), and fair values of the Company’s equity securities and other long-term investments as of December 31, 2024 and 2023 were as follows:
Cost or
amortized
cost
Gross
unrealized
gains
Gross
unrealized
losses
Net foreign
currency
gains (losses)
Fair value
December 31, 2024
Other long-term investments$317.8 $37.5 $(158.8)$3.5 $200.0 
December 31, 2023
Other long-term investments$358.1 $20.0 $(70.6)$2.6 $310.1 
The Company holds investments in hedge funds and private equity funds, which are included in other long-term investments. The carrying value of other long-term investments as of December 31, 2024 and 2023 were as follows:
December 31,
2024
December 31,
2023
Hedge funds and private equity funds (1)
$69.5 $74.5 
Strategic investments (2)
105.0 203.9 
Other investments (2)
25.5 31.7 
Total other long-term investments $200.0 $310.1 
(1)Includes $45.4 million of investments carried at NAV (December 31, 2023 - $58.7 million) and no investments classified as Level 3 (December 31, 2023 - no investments classified as Level 3) within the fair value hierarchy.
(2)As of December 31, 2024, the Company had $7.2 million of unfunded commitments relating to these investments (December 31, 2023 - $14.7 million).
The Company’s other long-term investments may be accounted for under either the equity method (“equity method investments”) or the fair value option (“equity method eligible unconsolidated entities”). The following table presents the components of other long-term investments as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Equity method eligible unconsolidated entities, using the fair value option$66.6 $139.2 
Equity method investments26.1 37.0 
Other unconsolidated investments, at fair value (1)
68.7 90.8 
Other unconsolidated investments, at cost (2)
38.6 43.1 
Total other long-term investments$200.0 $310.1 
(1)Includes other long-term investments that are not equity method eligible and are measured at fair value.
(2)The Company has elected to apply the cost adjusted for market observable events impairment measurement alternative to investments that do not meet the criteria to be accounted for under the equity method, in which the investment is measured at cost and remeasured to fair value when impaired or upon observable transaction prices.
Equity method eligible unconsolidated entities, using the fair value option, exclude the Company’s investment in Third Point Enhanced LP (“TP Enhanced Fund”), Third Point Venture Offshore Fund I LP (“TP Venture Fund”), Third Point Venture Offshore Fund II LP (“TP Venture Fund II”), collectively, the “Related Party Investment Funds.” Refer to “Investments in related party investment funds” discussed below.
Investment in related party investment funds
The following table provides the fair value of the Company's investments in related party investment funds as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Third Point Enhanced LP$87.6 $77.5 
Third Point Venture Offshore Fund I LP24.0 25.0 
Third Point Venture Offshore Fund II LP4.9 3.1 
Investments in related party investment funds, at fair value$116.5 $105.6 
Investment in Third Point Enhanced LP
On February 23, 2022, the Company entered into the Fourth Amended and Restated Exempted Limited Partnership Agreement of TP Enhanced Fund with Third Point Advisors LLC (“TP GP”) and the other parties thereto (the “2022 LPA”), which amended and restated the Third Amended and Restated Exempted Limited Partnership Agreement dated August 6, 2020 (the “2020 LPA”).
The TP Enhanced Fund investment strategy, as implemented by Third Point LLC, is intended to achieve superior risk-adjusted returns by deploying capital in both long and short investments with favorable risk/reward characteristics across select asset classes, sectors and geographies. Third Point LLC identifies investment opportunities via a bottom-up, value-oriented approach to single security analysis supplemented by a top-down view of portfolio and risk management. Third Point LLC seeks dislocations in certain areas of the capital markets or in the pricing of particular securities and supplements single security analysis with an approach to portfolio construction that includes sizing each investment based on upside/downside calculations, all with a view towards appropriately positioning and managing overall exposures.
As of December 31, 2024, the Company had no unfunded commitments related to TP Enhanced Fund. As of December 31, 2024, the Company hold interests of approximately 89.2% of the net asset value of TP Enhanced Fund.
Investment in Third Point Venture Offshore Fund I LP
On March 1, 2021, SiriusPoint Bermuda entered into the Amended and Restated Exempted Limited Partnership Agreement (“2021 Venture LPA”) of TP Venture Fund which became effective on March 1, 2021. In accordance with the 2021 Venture LPA, Third Point Venture GP LLC (“TP Venture GP”) serves as the general partner of TP Venture Fund.
The TP Venture Fund investment strategy, as implemented by Third Point LLC, is to generate attractive risk-adjusted returns through a concentrated portfolio of investments in privately-held companies, primarily in the expansion through late/pre-IPO
stage. The TP Venture Fund may also invest in early stage companies. Due the nature of the fund, withdrawals are not permitted. Distributions prior to the expected termination date of the fund include, but are not limited to, dividends or proceeds arising from the liquidation of the fund's underlying investments.
As of December 31, 2024, the Company had $9.3 million of unfunded commitments related to TP Venture Fund. As of December 31, 2024, the Company holds interests of approximately 16.8% of the net asset value of TP Venture Fund.
Investment in Third Point Venture Offshore Fund II LP
On June 30, 2022, SiriusPoint Bermuda entered into the Amended and Restated Exempted Limited Partnership Agreement (“2022 Venture II LPA”) of TP Venture Fund II. In accordance with the 2022 Venture II LPA, Third Point Venture GP II LLC (“TP Venture GP II”) serves as the general partner of TP Venture Fund II.
The TP Venture Fund II investment strategy, as implemented by Third Point LLC, is to generate attractive risk-adjusted returns through a concentrated portfolio of investments in privately-held companies, primarily in the expansion through late/pre-IPO stage. The TP Venture Fund may also invest in early stage companies. Due the nature of the fund, withdrawals are not permitted. Distributions prior to the expected termination date of the fund include, but are not limited to, dividends or proceeds arising from the liquidation of the fund's underlying investments.
As of December 31, 2024, the Company had $19.7 million of unfunded commitments related to TP Venture Fund II. As of December 31, 2024, the Company holds interests of approximately 17.8% of the net asset value of TP Venture Fund II.
v3.25.0.1
Total net investment income and realized and unrealized investment gains (losses)
12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Total net investment income and realized and unrealized investment gains (losses)
8. Total net investment income and net realized and unrealized investment gains (losses)
Net investment income and net realized and unrealized investment gains (losses) for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Debt securities, available for sale$270.5 $181.6 $35.1 
Debt securities, trading9.2 66.1 (115.6)
Short-term investments10.0 29.3 17.7 
Other long-term investments (72.2)(20.1)(11.0)
Derivative instruments(2.0)4.8 — 
Net realized and unrealized investment gains (losses) from related party investment funds9.7 (1.0)(210.5)
Net investment income and realized and unrealized investment gains (losses) before other investment expenses and investment income (loss) on cash and cash equivalents225.2 260.7 (284.3)
Investment expenses(29.9)(16.1)(20.3)
Net investment income (loss) on cash and cash equivalents29.3 28.1 (18.1)
Total net investment income and realized and unrealized investment gains (losses)$224.6 $272.7 $(322.7)
Net realized and unrealized (losses) on investments
Net realized and unrealized investment losses for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Gross realized gains$25.8 $148.3 $56.2 
Gross realized losses(49.1)(189.0)(132.3)
Net realized gains (losses) on investments(23.3)(40.7)(76.1)
Net unrealized gains (losses) on investments(65.4)30.7 (149.4)
Net realized and unrealized losses on investments (1) (2)$(88.7)$(10.0)$(225.5)
(1)Excludes realized and unrealized gains (losses) on the Company’s investments in related party investment funds and unrealized gains (losses) from available for sale investments, net of tax.
(2)Includes net realized and unrealized gains (losses) of $(60.5) million from related party investments included in other long-term investments for the year ended December 31, 2024 (2023 - $(9.1) million and 2022 - $5.6 million).
Net realized investment losses
Net realized investment losses for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Debt securities, available for sale$(9.6)$(10.0)$2.7 
Debt securities, trading(7.9)(42.0)(66.7)
Short-term investments0.6 (1.4)(2.9)
Derivative instruments(0.8)— — 
Other long-term investments(5.2)8.9 0.6 
Net investment income (loss) on cash and cash equivalents(0.4)3.8 (9.8)
Net realized investment losses$(23.3)$(40.7)$(76.1)
Net realized investment gains (losses) for Other long-term investments for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Hedge funds and private equity funds$4.9 $8.1 $9.2 
Strategic investments(10.6)0.8 (2.5)
Other investments0.5 — (3.8)
Net realized investment gains (losses) on Other long-term investments$(5.2)$8.9 $2.9 
Net unrealized investment gains (losses)
Net unrealized investment gains (losses) for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Debt securities, trading$6.4 $62.3 $(105.0)
Short-term investments(0.5)1.7 (0.3)
Other long-term investments(70.0)(40.4)(23.9)
Derivative instruments(1.2)4.8 — 
Net investment income (loss) on cash and cash equivalents(0.1)2.3 (20.2)
Net unrealized investment gains (losses)$(65.4)$30.7 $(149.4)
Net unrealized investment losses for Other long-term investments for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Hedge funds and private equity funds$10.1 $0.7 $(7.3)
Strategic investments(70.5)(41.0)(8.2)
Other investments(9.6)— (10.2)
Net unrealized investment losses on Other long-term investments$(70.0)$(40.3)$(25.7)
The following table summarizes the amount of total losses included in earnings attributable to unrealized investment losses – Level 3 investments for the years ended December 31, 2024, 2023 and 2022:
202420232022
Debt securities, trading$— $(0.8)$0.7 
Other long-term investments(78.1)(25.2)(15.4)
Total unrealized investment losses – Level 3 investments$(78.1)$(26.0)$(14.7)
v3.25.0.1
Derivatives
12 Months Ended
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivatives
9. Derivatives
The Company holds derivative financial instruments for both risk management and investment purposes.
Foreign currency risk derivatives
The Company executes foreign currency forwards, swaps, and futures to manage foreign currency exposure. The foreign currency exchange rate derivatives are not designated or accounted for under hedge accounting. The fair value of the swaps and forwards are estimated using a single broker quote, and accordingly, are classified as a Level 3 measurement. The fair value of the futures is widely available and have quoted prices in active markets, and accordingly, were classified as a Level 1 measurement. As of December 31, 2024, the Company pledged no securities collateral associated with the foreign currency derivatives (December 31, 2023 - $42.2 million). Securities pledged as collateral are included in debt securities, available for sale, in the Company’s consolidated balance sheets.
Weather Derivatives
The Company holds assets and assumes liabilities related to weather and weather contingent risk management products. Weather and weather contingent derivative contracts are entered into with the objective of generating profits in normal climatic conditions. Accordingly, the Company’s weather and weather contingent derivatives are not designed to meet the criteria for hedge accounting under U.S. GAAP. The Company receives payment of premium at the contract inception in exchange for bearing the risk of variations in a quantifiable weather index. Management uses available market data and internal pricing models based upon consistent statistical methodologies to estimate the fair value. Because of the significance of the unobservable inputs used to estimate the fair value of the Company's weather risk contracts, the fair value measurements of the contracts are deemed to be Level 3 measurements in the fair value hierarchy as of December 31, 2024. The Company does not provide or hold any collateral associated with the weather derivatives.
Credit Default Swap
Credit default swaps protect the buyer against the loss of principal on one or more underlying bonds, loans, or mortgages in the event the issuer suffers a credit event. The Company provides its client with protection against financial non-performance of a subsidiary. The fair value of the swap is estimated using a single broker quote, and accordingly, is classified as a Level 3 measurement. As of December 31, 2024, the Company has $9.9 million pledges in securities collateral associated with the credit default swap (December 31, 2023 - $22.3 million). Securities pledged as collateral are included in debt securities, available for sale, in the Company’s consolidated balance sheets.
The following table summarizes information on the classification and amount of the fair value of derivatives not designated as hedging instruments within the Company's consolidated balance sheets as of December 31, 2024 and 2023:
December 31, 2024December 31, 2023
Derivatives not designated as hedging instruments
Derivative assets
at fair value(1)
Derivative liabilities
at fair value(2)
Notional
Value
Derivative assets
at fair value(1)
Derivative liabilities
at fair value(2)
Notional
Value
Foreign currency forwards$0.9 $3.3 $768.6 $12.0 $— $585.3 
Foreign currency swaps— — — — — — 
Weather derivatives— 5.6 3.7 0.2 1.0 30.6 
Interest rate swaps— — 29.8 3.4 1.7 62.7 
Credit default swap — 0.5 49.1 0.1 — 30.0 
Reinsurance contracts accounted for as derivatives$— $4.9 $100.1 $— $3.7 $97.4 
(1)Derivative assets are classified within Other assets in the Company's consolidated balance sheets.
(2)Derivative liabilities are classified within Accounts payable, accrued expenses and other liabilities in the Company's consolidated balance sheets.
The following table summarizes information on the classification and net impact on earnings, recognized in the Company's consolidated statements of income (loss) relating to derivatives during the years ended December 31, 2024, 2023 and 2022:
Derivatives not designated as hedging instrumentsClassification of gains (losses) recognized in earnings202420232022
Foreign currency futures contractsForeign exchange (gains) losses$— $— $(32.1)
Foreign currency forwardsForeign exchange (gains) losses50.4 0.8 (8.1)
Weather derivativesOther revenues1.2 2.6 7.3 
Equity warrantsNet realized and unrealized investment losses— — (0.1)
Foreign currency swapsForeign exchange (gains) losses— (3.8)1.5 
Interest rate swapsNet realized and unrealized investment losses2.0 4.8 — 
Credit default swap Net realized and unrealized investment losses— 0.1 — 
Reinsurance contracts accounted for as derivatives
Other revenues$0.3 $— $— 
v3.25.0.1
Variable and voting interest entities
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Variable and voting interest entities
10. Variable and voting interest entities    
The Company consolidates the results of operations and financial position of every voting interest entity ("VOE") in which it has a controlling financial interest and variable interest entities (“VIE”) in which it is considered to be the primary beneficiary in accordance with guidance in ASC 810, Consolidation. The consolidation assessment, including the determination as to whether an entity qualifies as a VOE or VIE, depends on the facts and circumstances surrounding each entity.
Consolidated variable interest entities
Alstead Re
Alstead Reinsurance Company (“Alstead Re”) is considered a VIE and the Company has concluded that it is the primary beneficiary of Alstead Re because the Company can exercise control over the activities that most significantly impact the economic performance of Alstead Re. As a result, the Company has consolidated the results of Alstead Re in its consolidated financial statements. As of December 31, 2024, Alstead Re’s assets and liabilities included in the Company’s consolidated balance sheets were $6.3 million and $0.8 million, respectively (December 31, 2023 - $14.5 million and $9.2 million, respectively).
Arcadian
Prior to June 30, 2024, Arcadian Risk Capital Ltd. (“Arcadian”) was considered a VIE and the Company concluded that it was the primary beneficiary of Arcadian because the Company could exercise control over the activities that most
significantly impacted the economic performance of Arcadian. As a result, the Company consolidated the results of Arcadian in its consolidated financial statements.
Effective June 30, 2024, the Company deconsolidated Arcadian when the Company’s management and Arcadian consented to certain amendments to the shareholders’ agreement and termination of the unsecured promissory note which resulted in the Company ceasing to have control over Arcadian. Accordingly, the Company deconsolidated and removed the carrying value of Arcadian's assets of $177.4 million and liabilities of $143.2 million and the carrying value of the noncontrolling interest of $17.5 million attributed to Arcadian from its consolidated balance sheet on June 30, 2024. A gain of $95.9 million was recognized by the Company as a result of deconsolidation, which was recorded in Other revenues in the Company’s consolidated income statement in the second quarter of 2024. On June 30, 2024, the Company accounted for its retained equity investment in Arcadian under the equity method of accounting and recorded its noncontrolling interest in Arcadian at an estimated fair value of approximately $115.0 million, which was determined by an independent valuation specialist, in Other assets in the Company’s consolidated balance sheets. During the year ended December 31, 2024, the Company recorded its share of net income in Other revenues in its consolidated income statement. The Company’s ownership in Arcadian remained 49% as of December 31, 2024.
Banyan
In January 2023, Banyan Risk Ltd. (“Banyan”) completed a recapitalization in which the Company’s ownership decreased from 100% to 49%. After the recapitalization, Banyan was considered a VIE and the Company was its primary beneficiary as it could exercise control over the activities that most significantly impacted the economic performance of Banyan. The Company consolidated the results of Banyan in its consolidated financial statements through September 30, 2023. In October 2023, the Company sold the remainder of its ownership to Banyan and deconsolidated upon sale effective October 1, 2023. During the year ended December 31, 2023, the Company recorded a gain on sale of $1.5 million in Other revenues in the Company’s consolidated income statement.
Consolidated voting interest entities
Alta Signa
On June 30, 2022, the Company entered into a strategic partnership with Alta Signa Holdings (“Alta Signa”), a European MGA specializing in financial and professional lines insurance. As of December 31, 2024, the Company’s ownership in Alta Signa was 75.1%. Alta Signa is considered a VOE and the Company holds a majority of the voting interests through its seats on Alta Signa’s board of directors. As a result, the Company has consolidated the results of Alta Signa in its consolidated financial statements. As of December 31, 2024, Alta Signa’s assets and liabilities, before intercompany eliminations, included in the Company’s consolidated balance sheets were $1.8 million and $0.8 million, respectively (December 31, 2023 - $2.8 million and $0.8 million, respectively).
Noncontrolling interests
Noncontrolling interests represent the portion of equity in consolidated subsidiaries not attributable, directly or indirectly, to the Company. The following table is a reconciliation of the beginning and ending carrying amount of noncontrolling interests for the years ended December 31, 2024 and 2023:
20242023
Balance, beginning of period$16.7 $7.9 
Net income attributable to noncontrolling interests2.5 8.9 
Contributions (redemptions)(0.3)0.8 
Derecognition of noncontrolling interest (1)
(17.5)(0.9)
Balance, end of period$1.4 $16.7 
(1)See above for additional information on the derecognition of noncontrolling interests in Arcadian and Banyan.
Non-consolidated variable interest entities
The Company is a passive investor in certain third-party-managed hedge and private equity funds, some of which are VIEs. The Company is not involved in the design or establishment of these VIEs, nor does it actively participate in the management of the VIEs. The exposure to loss from these investments is limited to the carrying value of the investments at the balance sheet date.
The Company calculates maximum exposure to loss to be (i) the amount invested in the debt or equity of the VIE, (ii) the notional amount of VIE assets or liabilities where the Company has also provided credit protection to the VIE with the VIE as the referenced obligation, and (iii) other commitments and guarantees to the VIE. The Company does not have any VIEs that it sponsors nor any VIEs where it has recourse to it or has provided a guarantee to the VIE interest holders.
The following table presents total assets of unconsolidated VIEs in which the Company holds a variable interest, as well as the maximum exposure to loss associated with these VIEs as of December 31, 2024 and December 31, 2023:
December 31, 2024December 31, 2023
Carrying Amount
Maximum Exposure to Loss (1)
Carrying Amount
Maximum Exposure to Loss (1)
Debt securities, available for sale$21.1 $79.3 $— $— 
Other long-term investments (2)122.6 158.1 126.2 131.9 
$143.7 $237.4 $126.2 $131.9 
(1)Maximum exposure to loss is equal to the carrying amounts plus any unfunded commitments.
(2)Excludes the Company’s investments in Related Party Investment Funds which are also VIEs and are discussed separately below.
Third Point Enhanced LP
As of December 31, 2024, the Company and TP GP hold interests of approximately 89.2% and 10.8%, respectively, of the net asset value of TP Enhanced Fund. As a result, both entities hold significant financial interests in TP Enhanced Fund. However, TP GP controls all of the investment decision-making authority and the Company does not have the power to direct the activities which most significantly impact the economic performance of TP Enhanced Fund. As a result, the Company is not considered the primary beneficiary and does not consolidate TP Enhanced Fund. The Company’s maximum exposure to loss corresponds to the value of its investments in TP Enhanced Fund. See Note 7 for additional information on the Company’s investment in the TP Enhanced Fund.
Investment in Third Point Venture Offshore Fund I LP
TP Venture GP controls all of the investment decision-making authority of the TP Venture Fund. The Company does not have the power to direct the activities which most significantly impact the economic performance of the TP Venture Fund. The Company’s maximum exposure to loss corresponds to the value of its investment in TP Venture Fund. See Note 7 for additional information on the Company’s investment in TP Venture Fund.
Investment in Third Point Venture Offshore Fund II LP
TP Venture GP II controls all of the investment decision-making authority of the TP Venture Fund II. The Company does not have the power to direct the activities which most significantly impact the economic performance of the TP Venture Fund II. The Company’s maximum exposure to loss corresponds to the value of its investment in TP Venture Fund II. See Note 7 for additional information on the Company’s investment in TP Venture Fund II.
v3.25.0.1
Loss and loss adjustment expense reserves
12 Months Ended
Dec. 31, 2024
Insurance [Abstract]  
Loss and loss adjustment expense reserves
11. Loss and loss adjustment expense reserves
As of December 31, 2024 and 2023, loss and loss adjustment expense reserves in the consolidated balance sheets was comprised of the following:
December 31,
2024
December 31,
2023
Case loss and loss adjustment expense reserves$1,856.0 $2,042.5 
Incurred but not reported loss and loss adjustment expense reserves3,732.9 3,509.7 
Unallocated loss adjustment expense reserves65.0 55.9 
$5,653.9 $5,608.1 
Reserving methodologies
The Company establishes loss and loss adjustment expense reserves that are estimates of future amounts needed to pay claims and related expenses for events that have already occurred. The Company also obtains reinsurance whereby another reinsurer contractually agrees to indemnify the Company for all or a portion of the insurance or reinsurance risks underwritten by the Company. The Company establishes estimates of amounts recoverable from the reinsurer in a manner consistent with the loss and loss adjustment expense liability associated with the original policies issued, net of an allowance for uncollectible
amounts. Net reinsurance loss reserves represent loss and loss adjustment expense reserves reduced by reinsurance recoverable on unpaid losses.
The process of estimating reserves involves a considerable degree of judgment by management and, as of any given date, is inherently uncertain. Based on the above, such uncertainty may be larger relative to the reserves for reinsurance compared to insurance, and certainty may take a longer time to emerge. Upon notification of a loss from an insured (either a ceding company or a primary insured), the Company establishes case reserves, including loss adjustment expense reserves, based upon the Company’s share of the amount of reserves reported by the insured and the Company's independent evaluation of the loss.
Generally, initial actuarial estimates of IBNR reserves not related to a specific event are based on the expected loss ratio method applied to each class of business. The Company regularly reviews the adequacy of its recorded reserves by using a variety of generally accepted actuarial methods, including incurred and paid loss development methods and Bornhuetter-Ferguson paid and incurred loss methods. Use of these methods involves key assumptions, including expected loss ratios and paid and incurred loss development factors. Key to the projection of ultimate losses are the selection and weighting of the actuarial methods. Estimates of the initial expected ultimate losses involve management judgment and are based on historical information for that class of business, which includes loss ratios, market conditions, changes in pricing and conditions, underwriting changes, changes in claims emergence and other factors that may influence expected ultimate losses. If actual loss activity differs substantially from expectations, an adjustment to recorded reserves may be warranted. The uncertainties that could lead to these substantial differences are primarily due to the lapse of time to receive the reporting of the claims and the ultimate settlement of the claims; the diversity of development patterns among different lines of business; and the reliance on cedents, managing general underwriters, and brokers for information regarding claims. As time passes, loss reserve estimates for a given year will rely more on actual loss activity and historical patterns than on initial loss ratio assumptions.
Catastrophe event estimates
Some of the Company’s contracts are exposed to losses from catastrophes (either natural catastrophes or man-made catastrophes). Given the high-severity, low-frequency nature of these events, the losses typically generated from catastrophe events do not lend themselves to traditional actuarial reserving methods, such as those described above. Therefore, the reserving approach for these types of coverages is to estimate the ultimate cost associated with a single loss event rather than analyzing the historical development patterns of past losses for estimating ultimate losses for an entire contract. The Company estimates reserves for these catastrophe events on a contract-by-contract basis by means of a review of policies with known or potential exposure to a particular loss event. The Company considers the following information when making these contract-by-contract estimates of catastrophe event losses: information provided by cedents and brokers; industry loss estimates; our estimated market share; catastrophe model output; and the terms and conditions of the contracts with exposure to those events. Initial estimates are established in the period that a catastrophe event occurs and are then monitored each subsequent quarter, considering the latest information available.
Roll forward of loss and loss adjustment expense reserves
The following table represents the activity in the loss and loss adjustment expense reserves for the years ended December 31, 2024, 2023 and 2022:
202420232022
Gross reserves for loss and loss adjustment expenses, beginning of year$5,608.1 $5,268.7 $4,841.4 
Less: loss and loss adjustment expenses recoverable, beginning of year(2,295.1)(1,376.2)(1,215.3)
Less: deferred gains (charges) on retroactive reinsurance contracts27.5 (1.0)(1.4)
Net reserves for loss and loss adjustment expenses, beginning of year3,340.5 3,891.5 3,624.7 
Net reserves for loss and loss adjustment expenses transferred(1)
(291.4)(758.3)— 
Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
     Current year1,476.4 1,555.5 1,609.7 
     Prior years (107.9)(174.2)(21.3)
Total incurred loss and loss adjustment expenses1,368.5 1,381.3 1,588.4 
Net loss and loss adjustment expenses paid in respect of losses occurring in:
     Current year(324.3)(347.4)(316.1)
     Prior years(710.9)(837.3)(939.2)
Total net paid losses(1,035.2)(1,184.7)(1,255.3)
Foreign currency translation(35.3)10.7 (66.3)
Net reserves for loss and loss adjustment expenses, end of year3,347.1 3,340.5 3,891.5 
Plus: loss and loss adjustment expenses recoverable, end of year2,315.3 2,295.1 1,376.2 
Plus: deferred (gains) charges on retroactive reinsurance contracts (2)
(8.5)(27.5)1.0 
Gross reserves for loss and loss adjustment expenses, end of year$5,653.9 $5,608.1 $5,268.7 
(1)Net reserves for loss and loss adjustment expenses transferred represents the transfer of reserves under the 2024 LPT and 2023 LPT.
(2)Deferred charges on retroactive reinsurance are recorded in other assets on the Company’s consolidated balance sheets. Deferred gains on retroactive reinsurance are presented as a separate line item on the Company’s consolidated balance sheets.
The Company's prior year reserve development arises from changes to estimates of losses and loss adjustment expenses related to loss events that occurred in previous calendar years.
For the year ended December 31, 2024, the Company recorded $107.9 million of net favorable prior year loss reserve development primarily resulting from favorable development in Reinsurance, mainly in Property and Specialty from reserve releases relating to prior year’s catastrophe events, as well as favorable development in Insurance & Services, mainly in A&H due to lower than expected reported attritional losses.
For the year ended December 31, 2023, the Company recorded $174.2 million of net favorable prior year loss reserve development primarily resulting from management reflecting the continued favorable reported loss emergence through December 31, 2023 in its best estimate of reserves, which was further validated by the pricing of the 2023 LPT from external reinsurers, and a reduction in unallocated loss adjustment expense reserves related to the claims that will no longer be managed by SiriusPoint under the terms of the 2023 LPT, which represents $127.8 million of the favorable loss development, in addition to favorable prior year loss reserve development in A&H.
For the year ended December 31, 2022, the Company recorded $21.3 million of net favorable prior years loss reserve development driven by favorable development due to reserve releases in COVID-19 and A&H reserves due to better than expected loss experience, with the most significant offsetting movements being reserve strengthening in direct Workers’ Compensation reserves based on reported loss emergence, and in the Property lines, driven by the current elevated level of inflation.
The Company manages its business on the basis of two operating segments, Reinsurance and Insurance & Services. The Company has disaggregated its loss information presented in the tables below by line of business in each segment. The Company has presented the below development tables for all accident years shown using exchange rates as at December 31, 2024. All accident years prior to the current year have been restated and presented using the current year exchange rate. The Company has also excluded business subject to the 2024 LPT and 2023 LPT in the tables below, given their size and purpose in the organizational restructuring, as well as the distortive nature of the LPTs on loss development.
The Company’s loss reserve analysis is based primarily on underwriting year data. The preparation of accident year development tables requires an allocation of underwriting year data to the corresponding accident years. For instance, a contract written in one particular underwriting year may have exposure to losses from two or more accident years. These allocations are done using accident year loss payment and reporting patterns, along with premium earnings patterns. These patterns are derived from either company-specific or industry historical loss data, depending on availability and applicability. The Company believes that its allocations are reasonable; however, to the extent that the Company’s allocation procedure for loss and loss adjustment expenses incurred differs from actual historical development, the actual loss development may differ materially from the loss development presented.
As described in the roll forward of loss and loss adjustment expense reserves section above, changes in the Company’s loss and loss adjustment expense reserves result from both re-estimating loss reserves as well as changes in premium estimates.
Reinsurance
The following tables provide a breakdown of the Company’s loss and allocated loss adjustment expenses incurred, net and net loss and allocated loss adjustment expenses paid by accident year by line of business for the Company’s Reinsurance segment for the year ended December 31, 2024. The information related to loss and allocated loss adjustment expenses incurred, net and net loss and allocated loss adjustment expenses paid for the years ended December 31, 2015 through 2023 is presented as supplementary information and is unaudited:
Casualty
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$126.7 $133.7 $131.4 $130.5 $129.0 $128.3 $127.7 $127.1 $127.0 $126.9 $0.9 
2016— 124.7 130.0 128.9 123.7 122.2 121.8 120.3 119.9 119.6 0.7 
2017— — 102.7 104.3 101.4 99.7 101.0 100.3 100.7 101.7 4.8 
2018— — — 140.1 143.7 146.3 151.8 153.8 162.3 165.9 17.7 
2019— — — — 178.3 179.7 191.6 196.6 205.6 211.3 35.7 
2020— — — — — 171.3 185.7 194.8 194.7 189.1 44.5 
2021— — — — — — 144.2 143.3 141.6 139.4 36.2 
2022— — — — — — — 291.2 298.3 287.4 138.2 
2023— — — — — — — — 353.3 349.7 182.2 
2024— — — — — — — — — 298.3 258.5 
Total$1,989.3 $719.4 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$45.3 $92.9 $106.3 $115.5 $119.5 $121.5 $123.2 $123.9 $124.4 $124.9 
2016— 42.3 91.8 103.4 110.4 113.3 115.7 116.4 117.0 117.6 
2017— — 28.2 57.7 67.4 75.6 80.9 85.3 88.8 91.5 
2018— — — 25.8 54.8 72.5 94.4 110.3 123.6 134.3 
2019— — — — 22.7 52.4 75.7 104.4 131.1 154.1 
2020— — — — — 19.7 44.2 75.0 102.9 124.1 
2021— — — — — — 16.5 44.2 65.5 84.2 
2022— — — — — — — 20.8 51.2 100.8 
2023— — — — — — — — 30.6 90.3 
2024— — — — — — — — — 16.3 
Total$1,038.1 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024
951.2 
Net reserves for loss and allocated loss adjustment expenses prior to 2015
2.4 
Casualty - net reserves for loss and allocated loss adjustment expenses, end of year$953.6 
Specialty
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$89.9 $110.7 $107.3 $104.9 $103.5 $102.8 $102.7 $102.8 $102.8 $102.6 $0.6 
2016— 123.4 121.0 115.3 110.6 110.5 110.1 108.9 108.9 108.3 1.0 
2017— — 117.1 122.5 116.8 117.0 115.8 113.9 113.4 112.4 3.9 
2018— — — 92.7 91.5 92.8 89.7 88.0 83.7 81.9 2.3 
2019— — — — 88.4 88.0 90.5 85.3 84.3 82.1 4.5 
2020— — — — — 102.0 98.9 94.6 94.6 84.9 10.8 
2021— — — — — — 66.1 60.5 59.2 53.0 10.6 
2022— — — — — — — 84.9 84.3 82.3 33.1 
2023— — — — — — — — 152.5 144.6 58.5 
2024— — — — — — — — — 191.6 127.2 
Total$1,043.7 $252.5 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$36.2 $72.5 $93.9 $97.6 $99.7 $100.2 $100.1 $100.6 $101.4 $101.3 
2016— 28.9 87.9 98.7 103.3 105.2 104.4 105.4 106.3 106.5 
2017— — 57.2 85.6 96.5 100.6 101.5 104.5 105.7 106.4 
2018— — — 36.4 54.4 69.9 70.7 69.9 69.0 69.5 
2019— — — — 25.6 46.2 61.0 65.5 68.4 70.9 
2020— — — — — 28.7 41.1 54.6 59.5 62.2 
2021— — — — — — 13.6 23.5 29.5 31.3 
2022— — — — — — — 8.7 18.6 32.8 
2023— — — — — — — — 20.5 50.8 
2024— — — — — — — — — 31.2 
Total$662.9 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024380.8 
Net reserves for loss and allocated loss adjustment expenses prior to 2015(2.2)
Specialty - net reserves for loss and allocated loss adjustment expenses, end of year$378.6 
Property Other
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$105.0 $114.7 $117.7 $120.0 $119.7 $119.1 $119.9 $119.8 $119.6 $119.6 $0.1 
2016— 126.2 132.3 136.0 136.6 135.9 136.3 136.1 135.5 135.8 0.2 
2017— — 227.6 258.1 270.8 273.8 275.5 273.0 271.6 266.8 0.4 
2018— — — 209.7 243.9 251.1 248.4 246.2 243.5 239.0 4.9 
2019— — — — 180.4 184.8 185.4 182.4 184.2 182.6 3.6 
2020— — — — — 132.8 145.0 143.7 144.3 138.4 12.5 
2021— — — — — — 62.3 63.9 70.4 68.4 20.0 
2022— — — — — — — 59.2 59.2 58.8 2.6 
2023— — — — — — — — 63.3 66.6 12.6 
2024— — — — — — — — — 69.2 45.8 
Total$1,345.2 $102.7 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$43.7 $96.3 $104.6 $111.9 $115.9 $117.1 $118.4 $119.0 $119.2 $119.3 
2016— 32.4 92.3 116.3 146.0 130.0 132.3 133.6 134.2 134.8 
2017— — 49.4 162.9 206.5 235.6 242.7 254.4 258.2 262.9 
2018— — — 55.9 147.3 194.4 208.6 221.0 226.8 230.1 
2019— — — — 46.6 121.5 148.2 163.1 171.3 176.4 
2020— — — — — 40.6 87.1 107.4 114.1 117.5 
2021— — — — — — 22.9 38.7 42.6 45.0 
2022— — — — — — — 9.7 31.5 53.0 
2023— — — — — — — — 12.7 50.3 
2024— — — — — — — — — 20.0 
Total$1,209.3 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024135.9 
Net reserves for loss and allocated loss adjustment expenses prior to 20150.7 
Property Other - net reserves for loss and allocated loss adjustment expenses, end of year$136.6 
Property Catastrophe
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — 27.6 32.6 26.4 27.2 28.2 28.5 26.8 25.2 1.0 
2018— — — 12.0 5.3 5.7 4.8 4.5 4.1 4.2 1.2 
2019— — — — 37.9 38.6 41.9 39.6 36.0 36.0 4.1 
2020— — — — — 58.1 69.6 63.0 68.1 56.9 11.8 
2021— — — — — — 67.7 69.4 57.0 55.5 8.2 
2022— — — — — — — 84.4 76.3 70.2 27.9 
2023— — — — — — — — 22.4 22.6 11.0 
2024— — — — — — — — — 70.4 62.5 
Total$341.0 $127.7 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — 1.3 7.8 12.0 20.4 20.6 22.0 22.9 23.6 
2018— — — 0.4 1.7 2.2 2.7 2.9 2.9 2.9 
2019— — — — 0.5 14.3 23.4 26.3 27.6 28.5 
2020— — — — — 7.4 25.5 36.4 41.5 42.8 
2021— — — — — — 16.1 29.1 32.9 42.6 
2022— — — — — — — 7.4 23.2 35.5 
2023— — — — — — — — 1.2 4.5 
2024— — — — — — — — — 7.5 
Total$187.9 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024153.1 
Net reserves for loss and allocated loss adjustment expenses prior to 20150.1 
Property Catastrophe - net reserves for loss and allocated loss adjustment expenses, end of year$153.2 
Other
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 — 
2018— — — 2.6 3.0 3.0 3.0 3.1 3.1 3.1 — 
2019— — — — 3.4 3.6 2.5 2.7 2.8 2.8 — 
2020— — — — — 3.1 1.1 1.4 1.4 1.3 — 
2021— — — — — — 0.2 0.1 0.1 0.1 — 
2022— — — — — — — — — — — 
2023— — — — — — — — — — — 
2024— — — — — — — — — — — 
Total$8.1 $— 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — 0.3 0.6 0.8 0.8 0.8 0.8 0.8 
2018— — — 1.0 2.1 3.0 3.0 3.1 3.1 3.1 
2019— — — — 1.6 2.6 2.5 2.6 2.8 2.8 
2020— — — — — 0.5 0.9 1.0 1.3 1.3 
2021— — — — — — — 0.1 0.1 0.1 
2022— — — — — — — — — — 
2023— — — — — — — — — — 
2024— — — — — — — — — — 
Total$8.1 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024— 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Other - net reserves for loss and allocated loss adjustment expenses, end of year$— 
Insurance & Services
The following tables provide a breakdown of the Company’s loss and allocated loss adjustment expenses incurred, net and net loss and allocated loss adjustment expenses paid by accident year by line of business for the Company’s Insurance & Services segment for the year ended December 31, 2024. The information related to loss and allocated loss adjustment
expenses incurred, net and net loss and allocated loss adjustment expenses paid for the years ended December 31, 2015 through 2023 is presented as supplementary information and is unaudited:
A&H
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$79.7 $82.6 $81.7 $80.7 $80.7 $80.7 $80.7 $80.7 $80.7 $80.7 $— 
2016— 85.3 88.0 84.4 83.2 83.2 82.8 82.9 82.8 82.9 — 
2017— — 94.3 88.4 82.2 80.5 80.5 80.8 81.0 81.1 — 
2018— — — 100.0 99.8 98.7 97.7 97.7 97.8 97.8 — 
2019— — — — 149.9 147.5 142.6 142.1 141.2 141.0 — 
2020— — — — — 147.5 146.0 139.6 136.0 136.2 0.1 
2021— — — — — — 142.5 135.3 127.2 126.6 2.3 
2022— — — — — — — 278.9 264.5 247.2 10.1 
2023— — — — — — — — 404.8 392.1 43.0 
2024— — — — — — — — — 414.0 190.7 
Total$1,799.6 $246.2 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$37.3 $73.3 $80.0 $80.5 $80.6 $80.6 $80.6 $80.6 $80.5 $80.7 
2016— 50.2 78.0 81.9 82.4 82.5 82.2 82.2 82.1 82.9 
2017— — 58.8 75.3 80.7 80.8 81.1 81.2 81.3 81.1 
2018— — — 66.9 89.8 98.1 98.3 98.4 98.3 97.9 
2019— — — — 99.4 134.0 139.7 140.5 140.6 141.0 
2020— — — — — 81.2 125.2 133.3 133.5 136.3 
2021— — — — — — 85.0 117.2 123.5 124.3 
2022— — — — — — — 139.0 216.6 234.6 
2023— — — — — — — — 205.6 333.0 
2024— — — — — — — — — 201.4 
Total$1,513.2 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024286.4 
Net reserves for loss and allocated loss adjustment expenses prior to 20150.1 
A&H - net reserves for loss and allocated loss adjustment expenses, end of year$286.5 
Casualty
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — — — — — — — — — — 
2018— — — — — — — — — — — 
2019— — — — — — — — — — — 
2020— — — — — 1.0 0.8 0.9 0.7 1.0 0.1 
2021— — — — — — 51.4 51.4 55.5 48.8 26.4 
2022— — — — — — — 139.9 131.9 127.6 97.8 
2023— — — — — — — — 198.8 199.1 152.6 
2024— — — — — — — — — 254.1 226.4 
Total$630.6 $503.3 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — — — — — — — — 
2018— — — — — — — — — — 
2019— — — — — — — — — — 
2020— — — — — — 0.3 0.4 0.4 0.9 
2021— — — — — — 0.8 6.9 10.9 19.4 
2022— — — — — — — 4.7 3.2 15.0 
2023— — — — — — — — 8.9 38.2 
2024— — — — — — — — — 15.3 
Total$88.8 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024541.8 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Casualty - net reserves for loss and allocated loss adjustment expenses, end of year$541.8 
Specialty
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — — — — — — — — — — 
2018— — — — — — — — — — — 
2019— — — — — — — — — — — 
2020— — — — — — — — — — — 
2021— — — — — — 7.1 9.0 10.0 9.7 1.0 
2022— — — — — — — 21.0 22.1 22.9 7.8 
2023— — — — — — — — 29.3 43.6 36.6 
2024— — — — — — — — — 28.4 22.4 
Total$104.6 $67.8 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — — — — — — — — 
2018— — — — — — — — — — 
2019— — — — — — — — — — 
2020— — — — — — — — — — 
2021— — — — — — 0.7 6.3 8.4 8.6 
2022— — — — — — — 7.5 13.6 15.0 
2023— — — — — — — — 3.1 5.3 
2024— — — — — — — — — 3.1 
Total$32.0 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 202472.6 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Specialty - net reserves for loss and allocated loss adjustment expenses, end of year$72.6 
Property Other
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — — — — — — — — — — 
2018— — — — — — — — — — — 
2019— — — — — — — — — — — 
2020— — — — — 1.6 1.4 1.4 0.7 0.7 0.1 
2021— — — — — — 4.1 2.7 2.8 2.6 1.3 
2022— — — — — — — 10.3 11.5 10.1 1.7 
2023— — — — — — — — 19.8 20.0 7.2 
2024— — — — — — — — — 39.7 29.3 
Total$73.1 $39.6 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — — — — — — — — 
2018— — — — — — — — — — 
2019— — — — — — — — — — 
2020— — — — — 0.4 0.5 0.5 0.6 0.6 
2021— — — — — — 0.5 1.0 1.1 1.4 
2022— — — — — — — 1.5 5.8 7.4 
2023— — — — — — — — 1.6 6.4 
2024— — — — — — — — — 3.8 
Total$19.6 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 202453.5 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Property Other - net reserves for loss and allocated loss adjustment expenses, end of year$53.5 
Property Catastrophe
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — — — — — — — — — — 
2018— — — — — — — — — — — 
2019— — — — — — — — — — — 
2020— — — — — — — — — — — 
2021— — — — — — — — — — — 
2022— — — — — — — 1.7 1.8 1.8 0.8 
2023— — — — — — — — 0.1 0.1 0.1 
2024— — — — — — — — — 0.1 0.1 
Total$2.0 $1.0 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — — — — — — — — 
2018— — — — — — — — — — 
2019— — — — — — — — — — 
2020— — — — — — — — — — 
2021— — — — — — — — — — 
2022— — — — — — — — 0.3 0.9 
2023— — — — — — — — — — 
2024— — — — — — — — — — 
Total$0.9 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 20241.1 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Property Catastrophe - net reserves for loss and allocated loss adjustment expenses, end of year
$1.1 
Reconciliation of loss development information to loss and loss adjustment expense reserves
The following table provides a reconciliation of the Company's loss and loss adjustment expense reserves as of December 31, 2024:
December 31,
2024
Net reserves for loss and allocated loss adjustment expenses
Reinsurance
Casualty$953.6 
Specialty378.6 
Property Other136.6 
Property Catastrophe153.2 
Insurance & Services
A&H286.5 
Casualty541.8 
Specialty72.6 
Property Other53.5 
Property Catastrophe1.1 
Corporate (1)
644.5 
Net reserves for loss and allocated loss adjustment expenses, end of year3,222.0 
Loss and allocated loss adjustment expenses recoverable
Reinsurance
Casualty179.8 
Specialty214.8 
Property Other72.1 
Property Catastrophe46.8 
Insurance & Services
A&H63.3 
Casualty336.3 
Specialty102.7 
Property Other34.0 
Property Catastrophe0.5 
Corporate (1)
1,265.0 
Total loss and allocated loss adjustment expenses recoverable2,315.3 
Unallocated loss adjustment expense reserves65.0 
Other items, net (2)
60.1 
Deferred gains on retroactive reinsurance contracts(8.5)
Gross reserves for loss and loss adjustment expenses, end of year$5,653.9 
(1)Corporate includes the results of all runoff business and is not presented in the loss development tables.
(2)Includes fair value adjustments associated with the acquisition of Sirius Group.
Cumulative claims frequency
The reporting of cumulative claims frequency for the reserve classes within the Reinsurance and Insurance & Services segments are deemed to be impracticable as the information necessary to provide complete cumulative claims frequency for these reserve classes is not available to the Company. The underlying claim count is not provided for most reinsurance contracts written on a quote share or aggregate loss basis, and certain MGAs report data to the Company in an aggregate format and therefore the information necessary to provide complete cumulative claims is not available.
Claims duration
The following table is presented as supplementary information and presents the Company’s historical average annual percentage payout of loss and loss adjustment expenses incurred, net by age, as of December 31, 2024:
Year 1Year 2Year 3Year 4Year 5Year 6Year 7Year 8Year 9Year 10
(Unaudited)
Reinsurance
Casualty13.5 %19.4 %13.2 %11.5 %8.3 %6.2 %3.2 %1.1 %0.5 %0.4 %
Specialty27.5 %26.4 %15.1 %3.9 %1.7 %0.9 %0.7 %0.7 %0.5 %— %
Property Other24.8 %40.3 %16.1 %9.1 %1.8 %2.8 %1.3 %1.1 %0.3 %— %
Property Catastrophe12.3 %26.5 %16.5 %15.0 %2.3 %3.7 %3.1 %2.9 %— %— %
Other38.2 %34.2 %15.9 %7.6 %2.6 %1.1 %0.8 %0.8 %— %— %
Insurance & Services
A&H56.9 %30.2 %6.3 %0.4 %0.6 %0.1 %(0.1)%(0.1)%0.4 %0.2 %
Casualty4.7 %9.1 %8.9 %17.0 %44.9 %71.5 %— %— %— %— %
Specialty13.8 %18.1 %11.2 %1.3 %— %— %— %— %— %— %
Property Other10.7 %29.1 %13.3 %9.4 %0.1 %— %— %— %— %— %
Property Catastrophe(1.9)%21.3 %29.5 %— %— %— %— %— %— %— %
v3.25.0.1
Third party reinsurance
12 Months Ended
Dec. 31, 2024
Insurance [Abstract]  
Third party reinsurance
3. Significant transactions
CM Bermuda Transactions
Series A Preference Shares Settlement and Share Repurchase
On August 1, 2024, the Company entered into a Confidential Settlement and Mutual Release Agreement (the “Settlement Agreement”), and concurrently therewith, a Share Repurchase Agreement (the “Share Repurchase Agreement” and, together with the Settlement Agreement, collectively, the “CMIG Series A and Repurchase Agreement”), in each case, with CM Bermuda Limited (“CM Bermuda”) and CMIG International Holding Pte. Ltd.
The Company paid CM Bermuda a total consideration of $261.3 million upon the closing of the transactions under the CMIG Series A and Repurchase Agreement. Pursuant to the Settlement Agreement, the Company paid CM Bermuda for full satisfaction and discharge of all obligations and all other claims of any nature related to the Company’s Series A Preference Shares held by CM Bermuda and the related Certificate of Designation of Series A Preference Shares of the Company, and recorded a loss of $90.7 million in Loss on settlement and change in fair value of liability classified instruments in the Company’s consolidated income statement during the year ended December 31, 2024. All Series A Preference shares held by CM Bermuda were cancelled and retired at the closing of the transaction. Pursuant to the Share Repurchase Agreement, the Company repurchased 9,077,705 of the Company’s issued and outstanding common shares held by CM Bermuda for $125.0 million, which had a repurchase date fair value of $129.7 million. The repurchased shares were cancelled and retired.
Merger Warrant Settlement and Share Repurchase
On December 30, 2024, the Company entered into a Securities Purchase Agreement (the “CMIG Securities Purchase Agreement”) with CM Bermuda. The CMIG Securities Purchase Agreement provides that, subject to the satisfaction or waiver of certain customary conditions set forth therein, the Company will repurchase all common shares and all warrants to purchase common shares held by CM Bermuda.
Upon the terms and subject to the conditions in the CMIG Securities Purchase Agreement, the Company will repurchase 20,991,337 warrants at $3.56 per warrant and 45,720,732 common shares at $14.25 per common share. The aggregate amount payable by the Company under the CMIG Securities Purchase Agreement will be approximately $733.0 million, including certain costs and expenses. Following the closing, CM Bermuda will have no remaining ownership interest in the Company. The common shares will be purchased into treasury and the warrants will be cancelled. The CMIG Securities Purchase Agreement contains customary representations, warranties and covenants of the parties. Consummation of the transactions contemplated by the CMIG Securities Purchase Agreement is subject only to the representations and warranties of each party being true and correct as of the closing date.
The closing is expected to be completed on or before February 28, 2025. The CMIG Securities Purchase Agreement contemplates that payment thereunder be made in two tranches. The first payment of $250.0 million was made concurrently with the execution of the CMIG Securities Purchase Agreement. At the closing, the Company will pay an additional $483.0 million to CM Bermuda, which is recorded in Share repurchase liability in the Company’s consolidated balance sheet as of December 31, 2024. The repurchase date fair value of the common shares was $649.2 million. Pursuant to the CMIG Securities Purchase Agreement, the Company recorded a loss of $25.9 million in Loss on settlement and change in fair value of liability classified instruments in the Company’s consolidated income statement, which includes $6.8 million of CM Bermuda’s costs and expenses.
In connection with the transactions contemplated by the CMIG Securities Purchase Agreement, the parties have agreed that, effective and contingent upon the closing, CM Bermuda’s appointed board representative, Meng Tee Saw, will resign from the Board and each committee of the Board of which he is a member; and the Company and CM Bermuda will terminate that certain Investor Rights Agreement, dated as of February 26, 2021, by and between SiriusPoint and CM Bermuda (the “IRA”). CM Bermuda has similarly placed an executed resignation letter and IRA termination agreement into escrow. Via the termination of the IRA, CM Bermuda will no longer have observer rights on the Board.
Workers’ Compensation Loss Portfolio Transfer
On April 30, 2024, SiriusPoint America Insurance Company (“SiriusPoint America”), a subsidiary of the Company, entered into the Master Agreement, dated as of April 30, 2024, made by and between SiriusPoint America and Clarendon National Insurance Company (“Clarendon National”), an insurer domiciled in Texas and an affiliate of Enstar Group Limited, a
Bermuda exempted company (“Enstar”). The Company received the appropriate regulatory approvals and the transaction closed on October 1, 2024.
Pursuant to the Master Agreement, on the closing of the transactions contemplated therein, among other documents, (a) SiriusPoint America and Clarendon National entered into a Loss Portfolio Transfer Reinsurance Agreement (the “2024 LPT”), pursuant to which SiriusPoint America cedes and Clarendon National assumes 100% of the net liability with respect to certain workers’ compensation insurance exposures of SiriusPoint America (the “Subject Business”) on a funds withheld basis, subject to the terms and conditions of the 2024 LPT including an aggregate limit; (b) SiriusPoint America and an affiliate of Clarendon National (the “Administrator”) entered into an Administrative Services Agreement concerning the Administrator’s authority and responsibility for certain administrative services related to the Subject Business, including claims handling; and (c) Enstar issued a Parental Guarantee in favor of SiriusPoint America guaranteeing Clarendon National’s obligations under the 2024 LPT. In certain circumstances and in lieu of the guarantee obligations provided thereunder, Clarendon National may post letters of credit as collateral securing Clarendon National’s reinsurance obligations with respect to the Subject Business. Immediately prior to the effective date of the 2024 LPT, SiriusPoint commuted certain ceded workers’ compensation reinsurance contracts, and the liabilities related to those commuted contracts are included in the Subject Business.
The transaction price of approximately $400 million covered SiriusPoint loss and unearned premium reserves, including commuted liabilities, and the reinsurance premium as of the December 31, 2023 valuation date. The subject loss reserves are now included in Loss and loss adjustment expenses recoverable in the Company’s consolidated balance sheets. Following the commutation of certain liabilities, the Company recognized a loss of $20.1 million at the effective date of October 1, 2024. The agreement between SiriusPoint America and Clarendon National is on a funds withheld basis, and the funds held liability (including reinsurance premium) of $297.2 million as of December 31, 2024 is included within Reinsurance balances payable in the Company’s consolidated balance sheets. The aggregate limit under the 2024 LPT is 150% of the premium paid.
SiriusPoint International Loss Portfolio Transfer
On March 2, 2023, the Company agreed, subject to applicable regulatory approvals and other closing conditions, to enter into a loss portfolio transfer transaction (“2023 LPT”), on a funds withheld basis, with Pallas Reinsurance Company Ltd., a subsidiary of the Compre Group, an insurance and reinsurance legacy specialist. The transaction covered loss reserves ceded initially estimated at $1.3 billion as of the valuation date of September 30, 2022, which were reduced to $905.6 million as of June 30, 2023 at closing, as a result of paid losses and favorable prior accident year reserve development recognized during the interim period. As of December 31, 2024, the Company recorded funds held payable of $543.2 million in Reinsurance balances payable and reinsurance recoverable of $569.2 million, and the Company’s estimate of deferred gain is $8.5 million. The 2023 LPT comprises several classes of business from 2021 and prior underwriting years. The aggregate limit under the 2023 LPT is 130% of roll forward reserves at the inception of the contract.
12. Third party reinsurance
In the normal course of business, the Company seeks to protect its businesses from losses due to concentration of risk and losses arising from catastrophic events by reinsuring with third-party reinsurers. Additionally, retrocession can be used as a mechanism to share the risks and rewards of business written and therefore can be used as a tool to align the Company’s interests with those of its counterparties. The Company remains liable for risks reinsured in the event that the reinsurer does not honor its obligations under reinsurance contracts.
The following tables provide a breakdown of the Company’s written and earned premiums and loss and loss adjustment expenses from direct business, reinsurance assumed and reinsurance ceded for the years ended December 31, 2024, 2023 and 2022:
202420232022
Premiums written:
Direct$1,824.3 $1,678.7 $1,403.9 
Assumed1,420.3 1,748.7 2,005.8 
Gross premiums written3,244.6 3,427.4 3,409.7 
Ceded(892.5)(989.5)(860.5)
Net premiums written$2,352.1 $2,437.9 $2,549.2 
202420232022
Premiums earned:
Direct$1,721.5 $1,498.0 $1,153.6 
Assumed1,357.0 1,826.0 1,915.2 
Gross premiums earned3,078.5 3,324.0 3,068.8 
Ceded(735.0)(897.8)(750.7)
Net premiums earned$2,343.5 $2,426.2 $2,318.1 
202420232022
Loss and loss adjustment expense:
Direct$1,070.7 $1,008.6 $778.0 
Assumed961.5 910.5 1,386.8 
Loss and loss adjustment expense incurred2,032.2 1,919.1 2,164.8 
Ceded(663.7)(537.8)(576.4)
Loss and loss adjustment expense incurred, net$1,368.5 $1,381.3 $1,588.4 
Because retrocessional reinsurance contracts do not relieve the Company of its obligation to its insureds, the collectability of balances due from the Company's reinsurers is important to its financial strength. The Company monitors the financial strength and ratings of retrocessionaires on an ongoing basis. As of December 31, 2024, the Company had loss and loss adjustment expenses recoverable of $2,315.3 million (December 31, 2023 - $2,295.1 million). Loss and loss adjustment expenses recoverable from the retrocessionaire are recorded as assets.
The following tables provide a listing of the Company’s loss and loss adjustment expenses recoverable by the reinsurer's S&P rating and the percentage of total recoverables as of December 31, 2024 and 2023. With certain reinsurers, if S&P's rating was not available, an equivalent AM Best or other major credit agency’s rating was used.
 December 31, 2024
Rating (1) (2)
GrossCollateralNet% of Net
Total
AA$195.0 $21.8 $173.2 17.9 %
A722.7 87.8 634.9 65.5 %
BBB or lower30.6 23.0 7.6 0.8 %
Not rated1,367.0 1,213.7 153.3 15.8 %
Total$2,315.3 $1,346.3 $969.0 100.0 %
December 31, 2023
Rating (1) (2)
GrossCollateralNet% of Net
Total
AA$294.5 $76.9 $217.6 24.4 %
A601.9 111.2 490.7 55.1 %
BBB or lower202.0 76.6 125.4 14.1 %
Not rated1,196.7 1,140.1 56.6 6.4 %
Total$2,295.1 $1,404.8 $890.3 100.0 %
(1) S&P’s ratings as detailed above are: "AAA" (Extremely Strong), "AA" (Very strong), "A" (Strong) and "BBB" (Adequate).
(2) Not rated represents reinsurers who are not rated by S&P, AM Best, or another major rating agency. Included in the “Not rated” category as of December 31, 2024 is $907.4 million related to Pallas Reinsurance Ltd. as a result of the 2023 LPT and the loss portfolio transfer completed on October 29, 2021 (the “2021 LPT”) and $291.4 million related to Clarendon National as a result of the 2024 LPT (2023 - $1,090.2 million related to Pallas Reinsurance Ltd. as a result of the 2023 LPT and 2021 LPT).
The following tables provide a listing of the five highest loss and loss adjustment expenses recoverable by reinsurer, along with percentage of total recoverable amount, the reinsurer's reinsurer rating by S&P, AM Best, or other major rating agencies and the percentage that the recoverable is collateralized as of December 31, 2024 and 2023:
 December 31, 2024
Balance% of TotalRating% Collateralized
Reinsurer:  
Pallas Reinsurance Company Ltd.$907.4 39.2 %Not rated89.9 %
Clarendon National Insurance Company
291.4 12.6 %Not rated102.0 %
Arch Reinsurance Ltd218.9 9.5 %A+— %
General Insurance Corporation of India153.8 6.6 %A-22.4 %
Allianz SE$74.4 3.2 %AA-17.3 %
December 31, 2023
Balance% of TotalRating% Collateralized
Reinsurer:
Pallas Reinsurance Company Ltd.$1,090.2 47.5 %Not rated96.5 %
Arch Reinsurance Ltd169.3 7.4 %A+1.0 %
General Insurance Corporation of India164.1 7.2 %BBB27.4 %
Pie Casualty Insurance Company98.0 4.3 %A-15.4 %
Allianz SE$94.4 4.1 %AA-54.0 %
v3.25.0.1
Allowance for expected credit losses
12 Months Ended
Dec. 31, 2024
Receivables [Abstract]  
Allowance for expected credit losses
13. Allowance for expected credit losses
The Company is exposed to credit losses primarily through sales of its insurance and reinsurance products and services. The financial assets in scope of the current expected credit losses impairment model primarily include the Company’s insurance and reinsurance balances receivable and loss and loss adjustment expenses recoverable. The Company pools these amounts by counterparty credit rating and applies a credit default rate that is determined based on the studies published by the rating agencies (e.g., AM Best, S&P, Fitch, Demotech). In circumstances where ratings are unavailable, the Company applies an internally developed default rate based on historical experience, reference data including research publications, and other relevant inputs.
The Company's assets in scope of the current expected credit loss assessment as of December 31, 2024 and 2023 are as follows:
December 31,
2024
December 31,
2023
Insurance and reinsurance balances receivable, net (1)
$2,054.4 $1,966.3 
Loss and loss adjustment expenses recoverable, net2,315.3 2,295.1 
Other assets (2)
87.8 76.8 
Total assets in scope$4,457.5 $4,338.2 
(1)As of December 31, 2024, no individual counterparty’s insurance and reinsurance balances receivable exceeded 10% of the Company’s total insurance and reinsurance balances receivable (December 31, 2023 - $234.7 million from one counterparty).
(2)Relates to MGA trade receivables (included in other assets in the Company’s consolidated balance sheets), loans receivables (included in other long-term investments in the Company’s consolidated balance sheets) and interest and dividend receivables.
The Company’s allowance for expected credit losses was $28.8 million as of December 31, 2024 (December 31, 2023 - $28.8 million). For the year ended December 31, 2024, the Company recorded current expected credit (gains) losses of $(0.6) million (2023 - $(1.5) million and 2022 - $12.7 million). The change in allowance amounts are included in net corporate and other expenses in the consolidated statements of income (loss).
The Company monitors counterparty credit ratings and macroeconomic conditions, and considers the most current AM Best, S&P, and other major credit rating agencies to determine the allowance each quarter. As of December 31, 2024, approximately 67% of the total gross assets in scope were balances with counterparties rated by major credit rating agencies, of the total rated, 94% were rated A- or better.
v3.25.0.1
Debt and letter of credit facilities
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Debt and letter of credit facilities
14. Debt and letter of credit facilities
Debt obligations
The following table represents a summary of the Company’s debt obligations on its consolidated balance sheets as of December 31, 2024 and December 31, 2023:
December 31, 2024December 31, 2023
Amount
Effective rate (1)
Amount
Effective rate (1)
2024 Senior Notes, at face value$400.0 7.4 %n/an/a
Unamortized discount and issuance costs(5.2)n/a
2024 Senior Notes, carrying value394.8 n/a
2017 SEK Subordinated Notes, at face value249.2 7.9 %$273.6 7.7 %
Unamortized discount(4.9)(5.7)
2017 SEK Subordinated Notes, carrying value244.3 267.9 
2016 Senior Notes, at face value— — %400.0 4.6 %
Unamortized premium— 3.5 
2016 Senior Notes, carrying value
— 403.5 
2015 Senior Notes, at face value— — %115.0 7.0 %
Unamortized issuance costs— (0.2)
2015 Senior Notes, carrying value— 114.8 
Total debt$639.1 $786.2 
(1)Effective rate considers the effect of the debt issuance costs, discount, and premium.
2024 Senior Notes
In April 2024, the Company issued $400.0 million aggregate principal amount of 7.0% Senior Notes due 2029 (the “2024 Senior Notes”) at an issue price of 99.6% and net proceeds of $393.9 million after taking into effect both deferrable and non-deferrable issuance costs. Interest is payable on the 2024 Senior Notes semi-annually in arrears on April 5 and October 5 of each year, commencing on October 5, 2024. The 2024 Senior Notes were issued pursuant to a Senior Indenture, dated as of April 5, 2024, between the Company and The Bank of New York Mellon, as trustee, as supplemented by a First Supplemental Indenture. The 2024 Senior Notes were offered and sold pursuant to the shelf registration statement on Form S-3 (File No. 333-255917), filed with the U.S. Securities and Exchange Commission (the “Commission”) on May 7, 2021, and a prospectus supplement related to the 2024 Senior Notes dated March 27, 2024 (filed with the Commission pursuant to Rule 424(b)(2) under the Securities Act of 1933).
For the year ended December 31, 2024, the Company recorded $21.9 million of interest expense, inclusive of amortization of discount, on the 2024 Senior Notes (2023 - none).
2017 SEK Subordinated Notes
On September 22, 2017, Sirius Group, through Sirius International Group (“SIG”), issued floating rate callable subordinated notes denominated in Swedish kronor ("SEK") in the amount of SEK 2,750.0 million (or $346.1 million on date of issuance) at a 100% issue price ("2017 SEK Subordinated Notes"). The 2017 SEK Subordinated Notes were issued in an offering that was exempt from the registration requirements of the Securities Act of 1933 (the "Securities Act"). The Company assumed the 2017 SEK Subordinated Notes on May 27, 2021. The 2017 SEK Subordinated Notes bear interest on their principal amount at a floating rate equal to the applicable Stockholm Interbank Offered Rate for the relevant interest period plus an applicable margin, payable quarterly in arrears on March 22, June 22, September 22 and December 22 of each year until maturity in September 2047. Beginning on September 22, 2022, the 2017 SEK Subordinated Notes may be redeemed, in whole or in part, at the Company’s option. The Company was in compliance with all debt covenants as of and for the period ended December 31, 2024.
For the year ended December 31, 2024, the Company recorded $20.5 million of interest expense, inclusive of amortization of discount, on the 2017 SEK Subordinated Notes (2023 - $20.0 million). For the year ended December 31, 2024, the Company
also recognized $23.8 million of foreign exchange gains on the translation of the 2017 SEK Subordinated Notes into USD from SEK (2023 - $9.1 million gain).
2016 Senior Notes
On November 1, 2016, Sirius Group, through SIG, issued $400.0 million face value of senior unsecured notes ("2016 Senior Notes") at an issue price of 99.2% for net proceeds of $392.4 million after taking into effect both deferrable and non-deferrable issuance costs. The 2016 Senior Notes were issued in an offering that was exempt from the registration requirements of the Securities Act. The Company assumed the 2016 Senior Notes on May 27, 2021. The 2016 Senior Notes bear an annual interest rate of 4.6%, payable semi-annually in arrears on May 1 and November 1 of each year.
In April 2024, the Company amended the 2016 Senior Notes pursuant to a Fourth Supplemental Indenture thereto with The Bank of New York Mellon, as trustee, and following such amendment, the Company completed the redemption of all remaining outstanding $400.0 million aggregate principal amount of the 2016 Senior Notes.
2015 Senior Notes
On February 13, 2015, the Company issued $115.0 million of senior unsecured notes (the “2015 Senior Notes”) due February 13, 2025. The 2015 Senior Notes bear interest at 7.0% and interest is payable semi-annually on February 13 and August 13 of each year.
In April of 2024, the Company redeemed all $115.0 million aggregate principal amount of the 2015 Senior Notes.
Interest expense
Total interest expense incurred by the Company for its indebtedness for the year ended December 31, 2024 was $48.1 million (2023 - $45.4 million), funds withheld of $25.5 million (2023 - $16.2 million) in association with the 2023 LPT, funds withheld of $4.0 million in association with the 2024 workers’ compensation LPT, as well as income associated with reinsurance contracts and a gain on the commutation of a deposit accounted contract. See Note 3 - Significant transactions for further discussion on the 2023 LPT.
Standby letter of credit facilities
As of December 31, 2024, the Company had entered into the following letter of credit facilities:
Letters of CreditCollateral
Committed CapacityIssuedCash and Cash EquivalentsDebt securities
Committed - Secured letters of credit facilities$355.0 $267.1 $17.7 $232.9 
Uncommitted - Secured letters of credit facilities— 904.6 18.8 1,033.9 
$1,171.7 $36.5 $1,266.8 
The Company’s secured letter of credit facilities are bilateral agreements that generally renew on an annual basis. The letters of credit issued under the secured letter of credit facilities are fully collateralized. The above referenced facilities are subject to various affirmative, negative and financial covenants that the Company considers to be customary for such borrowings, including certain minimum net worth and maximum debt to capitalization standards. See Note 5 for additional information.
Revolving credit facility
In addition to the letter of credit facilities above, the Company entered into a three-year, $300.0 million senior unsecured revolving credit facility (the “2021 Facility”) with JPMorgan Chase Bank, N.A. (“JPM”) as administrative agent, effective February 26, 2021, which was extended in February 2024 for one additional year. On December 19, 2024, the Company and JPM amended and restated the 2021 Facility in its entirety and entered into a four-year, $400.0 million senior unsecured revolving credit facility (the “2024 Facility”) with JPM as administrative agent. The 2024 Facility also includes an option for the Company to request a 12-month extension, subject to satisfaction of certain conditions including, but not limited to, the consent of lenders representing a majority-in-interest of commitments, of the 2024 Facility maturity date. Subject to customary conditions precedent upon any Company borrowing request, the 2024 Facility provides access to loans for working capital and general corporate purposes, as well as letters of credit to support obligations under insurance and reinsurance agreements, retrocessional agreements and also for general corporate purposes.
As of December 31, 2024, there were no outstanding borrowings under the 2024 Facility. In addition, as of December 31, 2024, the Company was in compliance with all of the covenants under the 2024 Facility.
v3.25.0.1
Intangible Assets
12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
15. Intangible assets
The Company’s intangible assets consisted of the following and are included in Intangible assets on the Company’s consolidated balance sheets as of December 31, 2024 and 2023:
Economic Useful LifeGross balance at February 26, 2021Accumulated amortization and dispositionsNet balance at December 31, 2024
Distribution relationships17 years$75.0 $(13.9)$61.1 
MGA relationships13 years34.0 (16.9)17.1 
Lloyd’s Capacity - Syndicate 1945Indefinite41.8 — 41.8 
Insurance licensesIndefinite7.0 (1.0)6.0 
Trade name16 years16.0 (2.4)13.6 
Internally developed computer software5 years5.0 (3.8)1.2 
Identifiable intangible assets (1)
$178.8 $(38.0)$140.8 
Economic Useful LifeGross balance at February 26, 2021Accumulated amortization and dispositionsNet balance at December 31, 2023
Distribution relationships17 years$75.0 $(7.4)$67.6 
MGA relationships13 years34.0 (13.4)20.6 
Lloyd’s Capacity - Syndicate 1945Indefinite41.8 — 41.8 
Insurance licensesIndefinite7.0 (1.0)6.0 
Trade name16 years16.0 (1.5)14.5 
Internally developed computer software5 years5.0 (2.8)2.2 
Identifiable intangible assets (1)
$178.8 $(26.1)$152.7 
(1)No impairments were recorded in the years ended December 31, 2024 and 2023.

The estimated remaining amortization expense for the Company's intangible assets with finite lives is as follows:
2025$11.4 
20269.9
20279.1
20288.5
2029 and thereafter54.1
Total remaining amortization expense $93.0 
v3.25.0.1
Income taxes
12 Months Ended
Dec. 31, 2024
Income Tax Disclosure [Abstract]  
Income taxes
16. Income taxes
The Company provides for income tax expense or benefit based upon pre-tax income or loss reported in the consolidated statements of income (loss) and the provisions of currently enacted tax laws. For the year ended December 31, 2024, the Company and its subsidiaries organized in Bermuda were not subject to income taxes imposed by the government of Bermuda. Starting in 2025, a 15% corporate income tax is expected to apply to our Bermuda operations as a result of the enactment of the Corporate Income Tax Act 2023 (the “Bermuda CIT”) on December 27, 2023. The Bermuda CIT legislation includes specific provisions intended to administer a fair and equitable transition into the new tax system, referred to as the economic transition adjustment (“ETA”) and opening tax loss carryforward (“OTLC”). SiriusPoint Ltd. and at least one of its major subsidiaries organized and operating in Bermuda will be subject to these provisions. As result, in the fourth quarter of 2023 (the period of enactment), the Company recorded a net deferred tax asset in the amount of $100.8 million in connection with the Bermuda CIT. An additional $34.6 million benefit was recorded in 2024 through the income statement and other
comprehensive income after finalization of current year results. We expect that our in-scope entities will incur increased tax expense in Bermuda beginning in 2025.
The Company has subsidiaries and branches that operate in various other jurisdictions around the world that are subject to tax in the jurisdictions in which they operate. The jurisdictions in which the Company's subsidiaries and branches are subject to tax are Belgium, Bermuda, Canada, Germany, Luxembourg, Sweden, Switzerland, the United Kingdom, and the United States.
The following is a summary of the Company’s income (loss) before income tax (expense) benefit by jurisdiction for the years ended December 31, 2024, 2023 and 2022:
202420232022
Bermuda$53.7 $21.5 $(151.7)
U.S.89.6 98.6 (47.0)
U.K.4.1 2.7 (9.7)
Sweden86.1 156.7 (174.6)
Luxembourg0.1 38.1 (37.2)
Other(0.5)1.1 (2.5)
Income (loss) before income tax (expense) benefit$233.1 $318.7 $(422.7)
For the years ended December 31, 2024, 2023 and 2022, income tax (expense) benefit consisted of the following:
202420232022
Current tax (expense) benefit:
U.S. Federal$(6.1)$(17.0)$1.6 
State(1.1)(1.4)(0.9)
Non-U.S.(12.6)(13.9)(3.2)
Total current tax expense(19.8)(32.3)(2.5)
Deferred tax (expense) benefit:
U.S. Federal(15.4)(3.7)20.7 
State(1.3)(0.3)2.0 
Non-U.S.5.8 81.3 16.5 
Total deferred tax (expense) benefit(10.9)77.3 39.2 
Total income tax (expense) benefit$(30.7)$45.0 $36.7 
Effective Rate Reconciliation
The following table presents a reconciliation of expected income taxes to income tax (expense) benefit for the years ended December 31, 2024, 2023 and 2022:
202420232022
Tax (expense) benefit at the 0% Bermuda statutory rate$— $— $— 
Differences in taxes resulting from:
Bermuda Tax Law28.7 100.8 — 
Non-Bermuda earnings(39.9)(73.1)52.9 
Foreign currency effects(9.1)9.1 (10.7)
Non-Taxable/Deductible Income— 7.6 (1.4)
Change in Valuation Allowance8.9 (4.7)(14.3)
Tax on Safety Reserve(3.1)(2.3)(2.4)
Change in uncertain tax position1.4 — 8.0 
Tax rate change(8.4)— 2.7 
State taxes expense(0.9)(1.4)(0.7)
Provision-to-return true up(3.9)11.2 3.9 
Non-Deductible expenses(1.9)(0.6)— 
Foreign Branches(1.4)(1.3)— 
Other, net(1.1)(0.3)(1.3)
Total income tax (expense) benefit$(30.7)$45.0 $36.7 
The Tax Cuts and Jobs Act (“TCJA”) includes a Base Erosion and Anti-Abuse Tax (“BEAT”) provision, which is essentially a minimum tax on certain otherwise deductible payments made by U.S. entities to non-U.S. affiliates, including cross-border interest payments and reinsurance premiums paid or ceded. The statutory BEAT rate is 10% through 2025, and then rises to 12.5% in 2026 and thereafter. The TCJA also includes provisions for Global Intangible Low-Taxed Income (“GILTI”), under which taxes on foreign income are imposed on the excess of a deemed return on tangible assets of certain foreign subsidiaries. Consistent with accounting guidance, the Company will treat BEAT as an in period tax charge when incurred in future periods for which no deferred taxes need to be provided and has made an accounting policy election to treat GILTI taxes in a similar manner. No provision for income taxes related to BEAT or GILTI was recorded as of December 31, 2024 and December 31, 2023.
In December 2021, the Organisation for Economic Co-Operation and Development (“OECD”) published two global anti-base erosion model rules under Pillar Two (the “GloBE Rules”), which implement a 15% global minimum tax applicable for in-scope multinational groups (“GMT”). The first GloBE Rule is the income inclusion rule (“IIR”), which imposes “top-up” tax on a parent entity in respect of the income of a subsidiary that is taxed at less than 15%. The second GloBE Rule is the “undertaxed payments” rule, which denies deductions or requires an equivalent adjustment to the extent the income of an affiliate which is taxed at less than 15%. On January 1, 2024, the GloBE Rules went into effect in the EU, including a minimum top-up tax rate of 15% for multinational companies, with many E.U. member states enacting corollary legislation as part of their respective domestic tax laws. Consistent with accounting guidance, the Company will treat the global minimum tax as an in-period tax charge when incurred in future periods for which no deferred taxes need to be provided. No provision for top-up tax was recorded as of December 31, 2024, because, based on a country-by-country analysis, it has been determined that for each tested jurisdiction there would be no material amount of top-up tax.
The Company has capital and liquidity in many of its subsidiaries, some of which may reflect undistributed earnings. If such capital or liquidity were to be paid or distributed to the Company or to one of its intermediary subsidiaries as dividends or otherwise, they may be subject to withholding tax by the source country and/or income tax by the recipient country. The Company generally intends to operate, and manage its capital and liquidity, in a tax-efficient manner. However, the applicable tax laws in relevant countries are still evolving, including in connection with guidance and proposals from the OECD. Accordingly, such payments or distributions may be subject to income or withholding tax in jurisdictions where they are not currently taxed or at higher rates of tax than currently taxed, and the applicable tax authorities could attempt to apply income or withholding tax to past earnings or payments. It is not practicable to estimate the income tax liabilities that might be incurred if such earnings were remitted since it is driven by facts at the time of distribution.
Deferred Tax Inventory
The following table presents the tax effects of temporary differences that give rise to the deferred tax assets and deferred tax liabilities as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Deferred tax assets:
Non-U.S. net operating loss carryforwards$308.1 $309.6 
Purchase accounting— 2.4 
Tax credit carryforwards23.0 30.5 
Unearned premiums20.0 21.7 
U.S. federal net operating loss and capital carryforwards3.0 11.8 
Discounting of loss and loss adjustment expense reserves18.1 17.5 
Intangible assets84.8 57.0 
Unrealized losses on investments6.6 8.5 
Investment basis differences0.5 7.5 
Foreign currency translation on investments1.5 5.2 
Incentive compensation and benefit accruals3.9 4.3 
Deferred interest3.2 4.2 
Allowance for doubtful accounts4.0 3.7 
Other items7.0 13.3 
Total gross deferred tax assets483.7 497.2 
Valuation allowance(100.1)(112.4)
Total adjusted deferred tax asset$383.6 $384.8 
Deferred tax liabilities:
Safety reserve$111.0 $129.1 
Deferred acquisition costs19.7 23.3 
Purchase accounting27.9 — 
Other Items4.2 7.5 
Total deferred tax liabilities162.8 159.9 
Net deferred tax assets $220.8 $224.9 
Of the net deferred tax asset, net of valuation allowance, of $220.8 million as of December 31, 2024, $50.6 million relates to net deferred tax assets in U.S. subsidiaries, $114.4 million relates to net deferred tax assets in Luxembourg subsidiaries, $135.5 million relates to net deferred tax assets in Bermuda subsidiaries, $5.2 million relates to net deferred tax liabilities in U.K. subsidiaries, $73.4 million relates to net deferred tax liabilities in Sweden subsidiaries, and $1.1 million relates to net deferred tax liabilities in other jurisdictions.
The Company records a valuation allowance against deferred tax assets if it becomes more likely than not that all or a portion of deferred tax assets will not be realized. Changes in valuation allowances from period to period are included in income tax expense in the period of change. In determining whether or not a valuation allowance, or change therein, is warranted, the Company considers factors such as prior earnings history, expected future earnings, carryback and carryforward periods and strategies that if executed would result in the realization of a deferred tax asset. It is possible that certain planning strategies or projected earnings in certain subsidiaries may not be feasible to utilize the entire deferred tax asset, which could result in material changes to the Company's deferred tax assets and tax expense.
Based on this approach, for the year ended December 31, 2024, the Company recorded $100.1 million in the valuation allowance applicable to deferred tax assets. Of the $100.1 million, $66.5 million relates to net operating loss carryforwards in Luxembourg subsidiaries, $30.7 million relates primarily to net operating loss carryforwards in the United Kingdom, and $2.9 million relates to foreign tax credits in the United States.
Net Operating Loss and Capital Loss Carryforwards
Net operating loss and capital loss carryforwards as of December 31, 2024, the expiration dates and the deferred tax assets thereon are as follows:
December 31, 2024
United StatesLuxembourgSwedenU.K.GermanyBermudaTotal
2030-2044$9.2 $72.6 $— $— $— $— $81.8 
No expiration date10.5 688.5 104.6 115.7 2.3 500.6 1,422.2 
Total$19.7 $761.1 $104.6 $115.7 $2.3 $500.6 $1,504.0 
Gross deferred tax asset$3.0 $181.7 $21.6 $29.0 $0.7 $75.1 $311.1 
Valuation allowance— (66.5)— (29.0)(0.7)— (96.2)
Net deferred tax asset$3.0 $115.2 $21.6 $— $— $75.1 $214.9 
The Company expects to utilize net operating loss carryforwards in Luxembourg of $482.5 million but does not expect to utilize the remainder based on forecasted taxable income. The U.S. net operating loss carryforwards of $19.7 million are subject to an annual limitation on utilization under Internal Revenue Code Section 382. Of the Section 382 limited loss carryforwards, $9.2 million will expire between 2036 and 2039 and the remaining $10.5 million does not expire. The Company expects to utilize all of the U.S. net operating loss carryforwards.
Foreign Tax Credits
As of December 31, 2024, there are U.S. foreign tax credits carryforwards available of $7.9 million, all of which will expire between 2025 and 2033. As of December 31, 2024, there are alternative minimum tax credit carryforwards of $0.1 million which do not expire and are expected to become fully refundable beginning in the 2024 tax year under the TCJA. Further, there are Swedish foreign tax credits carryforwards available of $15.0 million and will start to expire in 2029.
Uncertain Tax Positions
Recognition of the benefit of a given tax position is based upon whether a company determines that it is more likely than not that a tax position will be sustained upon examination based upon the technical merits of the position. In evaluating the more likely than not recognition threshold, the Company must presume that the tax position will be subject to examination by a taxing authority with full knowledge of all relevant information. If the recognition threshold is met, then the tax position is measured at the largest amount of benefit that is more than 50% likely of being realized upon ultimate settlement.
The following table is a reconciliation of the beginning and ending unrecognized tax benefits for the years ended December 31, 2024 and 2023:
Permanent
differences (1)
Temporary
differences (2)
Interest and
penalties (3)
Total
Balance as of January 1, 2023$1.6 $— $0.7 $2.3 
Balance as of December 31, 20231.6 — 0.7 2.3 
Lapse in statute of limitations(0.8)— (0.6)(1.4)
Balance as of December 31, 2024$0.8 $— $0.1 $0.9 
(1)Represents the amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate.
(2)Represents the amount of unrecognized tax benefits that, if recognized, would create a temporary difference between the reported amount of an item in the consolidated balance sheets and its tax basis.
(3)Net of tax benefit.
As of December 31, 2024, the total reserve for unrecognized tax benefits is $0.9 million. If the Company determines in the future that its reserves for unrecognized tax benefits on permanent differences and interest and penalties are not needed, the reversal of $0.8 million of such reserves as of December 31, 2024 would be recorded as an income tax benefit and would impact the effective tax rate.
The Company classifies all interest and penalties on unrecognized tax benefits as part of income tax expense. During the year ended December 31, 2024, the Company did not recognize interest expense, net of any tax benefit (2023 - none and 2022 -
$0.1 million). As of December 31, 2024, the balance of accrued interest, net of any tax benefit, is $0.1 million (2023 - $0.7 million).
Tax Examinations
With few exceptions, which are not material, the Company is no longer subject to U.S. federal, state or non-U.S. income tax examinations by tax authorities for years before 2020.
v3.25.0.1
Shareholders' equity
12 Months Ended
Dec. 31, 2024
Equity [Abstract]  
Shareholders' equity
17. Shareholders' equity
Common shares
The following table presents a summary of the common shares issued and outstanding and shares repurchased as of and for the years ended December 31, 2024, 2023 and 2022:
202420232022
Common shares issued and outstanding, beginning of year168,120,022 162,177,653 161,929,777 
Issuance of common shares, net of forfeitures and shares withheld1,072,261 1,531,040 942,923 
Shares repurchased (1)(54,798,437)— (695,047)
Issuance of common shares upon exercise of options2,035,211 385,430 — 
Issuance of common shares upon exercise of warrants— 4,025,899 — 
Common shares issued and outstanding, end of year116,429,057 168,120,022 162,177,653 
(1) For further details on the repurchase during the year ended December 31, 2024, see discussion on the repurchases from CM Bermuda in Note 3 “Significant transactions”.
The Company’s authorized share capital consists of 300,000,000 common shares with a par value of $0.10 each. During the years ended December 31, 2024, 2023 and 2022, the Company did not pay any dividends to its common shareholders.
Preference shares
The Company’s authorized share capital also consists of 30,000,000 preference shares with a par value of $0.10 each.
Series B preference shares
The Series B preference shares are listed on the New York Stock Exchange under the symbol “SPNT PB”. The Company has 8,000,000 of Series B preference shares outstanding, par value $0.10. Dividends on the Series B preference shares are cumulative and payable quarterly in arrears at an initial rate of 8.0% per annum. The preference shareholders have no voting rights with respect to the Series B preference shares unless dividends have not been paid for six dividend periods, whether or not consecutive, in which case the holders of the Series B preference shares have the right to elect two directors.
The dividend rate will reset on each five-year anniversary of issuance at a rate equal to the five-year U.S. treasury rate at such time plus 7.298%. The Series B preference shares are perpetual and have no fixed maturity date. The Series B preference shares provide for redemption rights by the Company (i) in whole, or in part, on each five-year anniversary of issuance at 100%, (ii) in whole, but not in part, (a) upon certain rating agency events, at 102%, (b) upon certain capital disqualification events, at 100%, and (c) upon certain tax events, at 100%.
During the year ended December 31, 2024, the Company declared and paid dividends of $16.0 million (2023 - $16.0 million) to the Series B preference shareholders. The Company has declared and paid dividends to the Series B preference shareholders every quarter beginning June 30, 2021.
Share repurchases
On July 31, 2024, the Company’s Board of Directors authorized the Company to repurchase up to an additional $250.0 million of the Company’s common shares, which, together with the amount remaining available under the share repurchase programs previously authorized on May 4, 2016 and February 28, 2018, will allow the Company to repurchase up to $306.3 million of its common shares in the aggregate. The share repurchase program does not have an expiration date. On December 18, 2024, the Company’s Board of Directors authorized an additional share repurchase from CM Bermuda under the CMIG Securities Purchase Agreement. For further details, see Note 3 “Significant transactions”.
Under the share repurchase program, the Company may repurchase its common stock from time to time, in amounts, at prices and at times the Company deems appropriate in its sole discretion, subject to market conditions and other considerations. The share repurchases may be effected through a variety of methods, which may include open market purchases, privately negotiated transactions, block trades and accelerated share repurchase programs, including in accordance with Rule 10b5-1 and Rule 10b-18 under the Securities Exchange Act of 1934, or any combination of such methods.
During the year ended December 31, 2024, the Company repurchased 54,798,437 of its common shares from CM Bermuda for a repurchase date fair value of $779.0 million, including $483.0 million to be paid at the closing of the transaction on or before February 28, 2025, which is recorded in Share repurchase liability in the Company’s consolidated balance sheet as of December 31, 2024. For further details, see Note 3 “Significant transactions”. During the year ended December 31, 2023, the Company did not repurchase any of its common shares in the open market (December 31, 2022 - 695,047). Common shares repurchased by the Company during the period were cancelled and retired.
As of December 31, 2024 the Company was authorized to repurchase up to an aggregate of $181.3 million of outstanding common shares and warrants under its repurchase program.
v3.25.0.1
Share-based compensation and employee benefit plans
12 Months Ended
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Share-based compensation and employee benefit plans
18. Share-based compensation and employee benefit plans
Share-based compensation
As of December 31, 2024, the Company’s share-based awards consisted of Restricted Share Units (“RSUs”), Performance Share Units (“PSUs”), Restricted Share Awards (“RSAs”) and options.
As part of its annual long-term incentive award cycles, the Company granted to its employees a number of RSUs pursuant to the terms and conditions of the SiriusPoint Ltd. 2013 Omnibus Incentive Plan and 2023 Omnibus Incentive Plan. The RSUs generally vest over three years in equal, one-third installments on each anniversary of the award grant date subject to continued provision of services through the applicable vesting date. As of December 31, 2024, 14,404,393 (December 31, 2023 - 15,808,431) of the Company’s common shares were available for future issuance under the equity incentive compensation plans.
The total share-based compensation expense recognized during the years ended December 31, 2024, 2023 and 2022 was $18.3 million, $21.4 million and $26.8 million, respectively.
As of December 31, 2024, the Company had $23.2 million (December 31, 2023 - $23.3 million) of unamortized share compensation expense, which is expected to be amortized over a weighted average period of 1.7 years (December 31, 2023 - 1.8 years).
Restricted Share Units
RSU activity for the year ended December 31, 2024 was as follows:
Number of non-
vested restricted
shares
Weighted
average grant
date fair value
Balance as of January 1, 20242,871,686 $7.90 
Granted618,166 12.28 
Forfeited(161,795)12.93 
Vested(1,548,637)7.89 
Balance as of December 31, 20241,779,420 $9.33 
RSUs with service condition vest either ratably or at the end of the required service period and contain certain restrictions during the vesting period, relating to, among other things, forfeiture in the event of termination of employment or service and transferability.
Restricted Share Awards
Restricted share award activity for the year ended December 31, 2024 was as follows:
Number of non-
vested restricted
shares
Weighted
average grant
date fair value
Balance as of January 1, 2024649,527 $7.63 
Granted73,696 13.05 
Vested(590,516)7.69 
Balance as of December 31, 2024132,707 $10.38 
RSAs vest either ratably or at the end of the required service period and contain certain restrictions during the vesting period, relating to, among other things, forfeiture in the event of termination of employment or service and transferability.
Performance Share Units
PSU activity for the year ended December 31, 2024 was as follows:
Number of non-
vested PSUs
Number of non-
vested PSUs probable of vesting
Weighted average grant date fair value of PSUs probable of vesting
Balance as of January 1, 20241,990,467 1,990,467 $9.61 
Granted1,214,331 1,214,331 11.99 
Forfeited(334,466)(334,466)10.34 
Vested(269,904)(269,904)9.76 
Balance as of December 31, 20242,600,428 2,600,428 $10.61 
PSUs vest over four distinct performance periods subject to participant’s continued provision of services to the Company until the vesting date.
Options
The share options issued to management under the Share Incentive Plan are subject to a service condition. The fair value of share options issued were estimated on the grant date using the Black-Scholes option-pricing model. The Black-Scholes option-pricing model used the following assumptions for options granted during the year ended December 31, 2022 (there were no options granted for the years ended December 31, 2024 and 2023):
2022
Dividend yield— %
Risk free interest rate3.57 %
Expected volatility(1)
32.30 %
Expected life (in years)6.3
Weighted average grant date fair value$1.93
(1) The volatility assumption used was based on the average estimated volatility of a reinsurance peer group.
The options activity for the year ended December 31, 2024 were as follows:
Number of
options
Weighted
average exercise
price
Outstanding as of January 1, 20244,161,316 $8.26 
Exercised(2,035,211)9.19 
Outstanding as of December 31, 20242,126,105 7.36 
Exercisable as of December 31, 20241,911,775 $7.42 
As of December 31, 2024 the weighted average remaining contractual term for options outstanding and exercisable was 5.2 years and 5.0 years, respectively (2023 - 3.4 years and 3.2 years, respectively).
As of December 31, 2024, the aggregate intrinsic value of options outstanding and options exercisable was $17.4 million and $15.5 million, respectively (December 31, 2023 - $13.9 million and $10.7 million, respectively). For the year ended December 31, 2024, the Company received $18.4 million proceeds from the exercise of options (2023 - $3.0 million).
Employee Benefit and Contribution Plans
The Company operates several retirement plans in accordance with the local regulations and practices. These plans cover substantially all of the Company’s employees and provide benefits to employees in event of death, disability, or retirement.
Certain employees of SiriusPoint International can participate in defined benefit plans which are based on the employees' pension entitlements and length of employment. As of December 31, 2024, the projected benefit obligation of SiriusPoint International’s various benefit plans was $11.3 million (2023 - $14.1 million) and the funded status was $6.7 million (2023 - $5.1 million). As of December 31, 2024, the Swedish plan had a funded status of $6.7 million (2023 - $6.5 million). The accumulated benefit obligation for the year ended December 31, 2024 was $11.5 million (2023 - $15.3 million).
Total expenses related to the Company’s contributions to defined contribution plans was $17.5 million for the year ended December 31, 2024 (2023 - $14.8 million and 2022 - $6.1 million).
v3.25.0.1
Earnings per share available to SiriusPoint common shareholders
12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Earnings per share available to SiriusPoint common shareholders
19. Earnings per share available to SiriusPoint common shareholders
The following sets forth the computation of basic and diluted earnings (loss) per share available to SiriusPoint common shareholders for the years ended December 31, 2024, 2023 and 2022:
202420232022
Weighted-average number of common shares outstanding:($ in millions, except share and per share amounts)
Basic number of common shares outstanding166,537,394 163,341,448 160,228,588 
Dilutive effect of options1,055,916 595,908 — 
Dilutive effect of warrants— 899,249 — 
Dilutive effect of restricted share awards and units1,877,371 3,176,462 — 
Dilutive effect of Series A preference shares— 1,594,281 — 
Diluted number of common shares outstanding169,470,681 169,607,348 160,228,588 
Basic earnings (loss) per common share:
Net income (loss) available to SiriusPoint common shareholders$183.9 $338.8 $(402.8)
Net income allocated to SiriusPoint participating common shareholders(7.7)(24.3)— 
Net income (loss) allocated to SiriusPoint common shareholders$176.2 $314.5 $(402.8)
Basic earnings (loss) per share available to SiriusPoint common shareholders$1.06 $1.93 $(2.51)
Diluted earnings (loss) per common share:
Net income (loss) available to SiriusPoint common shareholders$183.9 $338.8 $(402.8)
Net income allocated to SiriusPoint participating common shareholders(7.7)(24.3)— 
Net income (loss) allocated to SiriusPoint common shareholders$176.2 $314.5 $(402.8)
Diluted earnings (loss) per share available to SiriusPoint common shareholders$1.04 $1.85 $(2.51)
For the year ended December 31, 2024, anti-dilutive restricted share units of 14,741 were excluded from the computation of diluted earnings per share available to SiriusPoint common shareholders.
For the year ended December 31, 2023, anti-dilutive options of 2,697,116, warrants of 26,013,599, and restricted share units of 75,154 were excluded from the computation of diluted earnings per share available to SiriusPoint common shareholders.
For the year ended December 31, 2022, options of 4,257,266 and warrants of 31,123,755 and were excluded from the computation of diluted loss per share available to SiriusPoint common shareholders.
v3.25.0.1
Related party transactions
12 Months Ended
Dec. 31, 2024
Related Party Transactions [Abstract]  
Related party transactions
20. Related party transactions
In addition to the transactions disclosed in Notes 3, 7 and 10 to these consolidated financial statements, the following transactions are classified as related party transactions, as the counterparties have either a direct or indirect shareholding in the Company or the Company has an investment in such counterparty.
(Re)insurance contracts
During the year ended December 31, 2024, insurance and reinsurance contracts with certain of the Company’s insurance and MGA related parties resulted in gross written premiums of $99.1 million (2023 - $302.2 million). As of December 31, 2024, the Company had total receivables from these related parties of $127.2 million and no payables (2023 - $61.8 million of receivables and no payables, respectively).
Investments managed by related parties
The following table provides the fair value of the Company's investments managed by related parties as of December 31, 2024 and December 31, 2023:
December 31, 2024December 31, 2023
Third Point Enhanced LP$87.6 $77.5 
Third Point Venture Offshore Fund I LP24.0 25.0 
Third Point Venture Offshore Fund II LP4.9 3.1 
Investments in related party investment funds, at fair value116.5 105.6 
Third Point Optimized Credit Portfolio (1)(2)
595.8 562.0 
Total investments managed by related parties$712.3 $667.6 
(1)The Third Point Optimized Credit Portfolio is reported in debt securities available for sale and trading in the consolidated balance sheets.
(2)Does not include asset-backed securities withdrawn as a redemption in-kind from the TP Enhanced Fund as of December 31, 2024 and 2023.
Management, advisory and performance fees to related parties
The total management, advisory and performance fees to related parties for the years ended December 31, 2024, 2023 and 2022 were as follows:
202420232022
Management and advisory fees$4.8 $5.2 $7.3 
Performance fees0.6 0.9 (1.2)
Total management, advisory and performance fees to related parties (1)
$5.4 $6.1 $6.1 
(1)Management, advisory and performance fees for the Related Party Investment Funds, where applicable, are presented within net realized and unrealized investment gains (losses) from related party investment funds in the consolidated statements of income (loss).
Management and advisory fees
Third Point Enhanced LP
Pursuant to the 2022 LPA, effective February 23, 2022, Third Point LLC is entitled to receive monthly management fees. Management fees are charged at the TP Enhanced Fund level and are calculated based on 1.25% per annum of the investment in TP Enhanced Fund.
Third Point Venture Offshore Fund I LP
No management fees are payable by the Company under the 2021 Venture LPA.
Third Point Venture Offshore Fund II LP
Pursuant to the 2022 Venture II LPA, management fees are charged at the TP Venture Fund II level and are calculated based on 0.1875% per quarter (0.75% per annum).
Third Point Insurance Portfolio Solutions and Third Point Optimized Credit
Pursuant to the Third Point Insurance Portfolio Solutions Investment Management Agreement (the “TPIPS IMA”), effective February 26, 2021, the Company will pay Third Point LLC a fixed management fee, payable monthly in advance, equal to 1/12 of 0.06% of the fair value of assets managed (other than assets invested in TP Enhanced Fund).
Pursuant to the 2022 IMA, effective February 23, 2022, the Company will also pay Third Point LLC a monthly management fee equal to one twelfth of 0.50% (0.50% per annum) of the TPOC Portfolio, net of any expenses, and a fixed advisory fee of $1.5 million per annum.
Performance fees
Third Point Enhanced LP
Pursuant to the 2022 LPA, TP GP receives a performance fee allocation equal to 20% of the Company’s investment income in the related party investment fund. The performance fee is included as part of “Investments in related party investment fund, at fair value” on the Company’s consolidated balance sheets since the fees are charged at the TP Enhanced Fund level.
Third Point Venture Offshore Fund I LP
Pursuant to the 2021 Venture LPA, TP Venture GP receives a performance fee allocation equal to 20% of the Company’s investment income in the related party investment fund.
Third Point Venture Offshore Fund II LP
Pursuant to the 2022 Venture II LPA, TP Venture GP II receives a performance fee allocation equal to 20% of the Company’s investment income in the related party investment fund.
Third Point Optimized Credit
Pursuant to the 2022 IMA, the Company will pay Third Point LLC, from the assets of each sub-account, an annual incentive fee equal to 15% of outperformance over a specified benchmark. The performance fee is included as part of Net investment income on the Company’s consolidated statements of income (loss).
v3.25.0.1
Commitments and contingencies
12 Months Ended
Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]  
Commitments and contingencies
21. Commitments and contingencies
Concentrations of credit risk
The Company has exposure to credit risk as it relates to its business written through brokers, if any of the Company’s brokers are unable to fulfill their contractual obligations with respect to payments to the Company. In addition, in some jurisdictions, if the broker fails to make payments to the insured under the Company’s policy, the Company may remain liable to the insured for the deficiency. These brokers are fairly large and well established, and there are no indications they are financially distressed. The Company’s exposure to such credit risk is somewhat mitigated in certain jurisdictions by contractual terms.
For the year ended December 31, 2024, no individual source accounted for more than 10% of gross premiums written. For the year ended December 31, 2023, Guy Carpenter & Company accounted for 12.1% of gross premiums written. For the year ended December 31, 2022, Guy Carpenter & Company and Aon Corporation accounted for 13.0%, and 18.3% of gross premiums written, respectively. No other source individually contributed more than 10% of total gross premiums written in any of the last three years.
The Company is exposed to credit risk through reinsurance contracts with companies that write credit risk insurance. The Company’s portfolio of risk is predominantly U.S. mortgage insurance and mortgage credit risk transfer. The Company provides its clients in these lines of business with reinsurance protection against credit deterioration, defaults or other types of financial non-performance. Loss experience in these lines of business has been very good but is cyclical and is affected by the state of the general economic environment. The Company proactively manages the risks associated with these credit-sensitive lines of business by closely monitoring its risk aggregation and by diversifying the underlying risks where possible. The Company has bought some retrocessional coverage against a subset of these risks.
The Company has exposure to credit risk related to balances receivable under our reinsurance contracts, including funds withheld and premiums receivable, and the possibility that counterparties may default on their obligations to the Company. The risk of counterparty default is partially mitigated by the fact that any amount owed from a reinsurance counterparty
would be netted against any losses or acquisition costs the Company would pay in the future. The Company monitors the collectability of these balances on a regular basis.
Litigation
From time to time in the normal course of business, the Company may be involved in formal and informal dispute resolution processes, which may include arbitration or litigation, the outcomes of which determine the rights and obligations under the Company’s reinsurance and insurance contracts and other contractual agreements. In some disputes, the Company may seek to enforce its rights under an agreement or to collect funds owed to it. In other matters, the Company may resist attempts by others to collect funds or enforce alleged rights. The Company may also be involved, from time to time in the normal course of business, in formal and informal dispute resolution processes that do not arise from, or are not directly related to, claims activity. The Company believes that no individual litigation or arbitration to which it is presently a party is likely to have a material adverse effect on its results of operations, financial condition, business or operations.
Leases
The Company operates globally and leases office space under various non-cancelable operating lease agreements.
During the year ended December 31, 2024, the Company recognized operating lease expense of $10.4 million (2023 - $10.3 million and 2022 - $12.8 million), including property taxes and routine maintenance expense as well as rental expenses related to short term leases.
The following table presents the lease balances within the consolidated balance sheets as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Operating lease right-of-use assets(1)
$22.8 $25.6 
Operating lease liabilities(2)
$24.5 $28.4 
Weighted average lease term (years)5.24.1
Weighted average discount rate3.0 %2.9 %
(1) Operating lease right-of-use assets are included in Other assets on the Company’s consolidated balance sheets.
(2) Operating lease liabilities are included in Accounts payable, accrued expenses and other liabilities on the Company’s consolidated balance sheets.
Future minimum rental commitments as of December 31, 2024 under these leases are expected to be as follows:
Future Payments
2025$6.0 
20265.2 
20274.3 
20284.7 
2029 and thereafter5.9 
Total future annual minimum rental payments26.1 
Less: present value discount(1.6)
Total lease liability as of December 31, 2024$24.5 
Liability-classified capital instruments
On February 26, 2021, the Company completed its acquisition of Sirius International Insurance Group, Ltd. (“Sirius Group”). The aggregate consideration for the transaction included the issuance of preference shares, warrants, and other contingent value components, which are recorded at fair value in the liability-classified capital instruments line of the consolidated balance sheets.
Series A Preference Shares
On February 26, 2021, certain holders of Sirius Group shares elected to receive Series A preference shares, par value $0.10 per share (“Series A Preference Shares”), with respect to the consideration price of the Sirius Group acquisition. The
Company issued 11,720,987 Series A Preference Shares. The Series A Preference Shares rank pari passu with the Company’s common shares with respect to the payment of dividends or distributions. Each Series A Preference Share has voting power equal to the number of Company shares into which it is convertible, and the Series A Preference Shares and Company shares shall vote together as a single class with respect to any and all matters. On the third anniversary of the closing date of the Sirius Group acquisition, the Series A Preference Shares were subject to a conversion ratio calculation, based on ultimate COVID-19 losses along with other measurement criteria, to convert into the Company’s common shares.
Pursuant to the CMIG Series A and Repurchase Agreement, the Company settled all Series A Preference Shares held by CM Bermuda during the third quarter of 2024, which resulted in a loss of $90.7 million for the year ended December 31, 2024. For further details, see Note 3 “Significant transactions”. During the year ended December 31, 2024, the Company did not declare or pay dividends to holders of Series A Preference Shares.
During the years ended December 31, 2023 and 2022, the Company recorded gains (losses) of $(35.8) million and $18.6 million, respectively, from the change in fair value of the Series A Preference Shares. As of December 31, 2023, the estimated fair value of the Series A preference shares was $37.6 million recorded in the Liability-classified capital instruments line of the consolidated balance sheets.
Merger Warrants
On February 26, 2021, the Company issued certain warrants with respect to the consideration price of the Sirius Group acquisition (the “Merger Warrants”). Pursuant to the Warrant Purchase, the Company settled all Merger Warrants held by CM Bermuda during the fourth quarter of 2024, which resulted in a loss of $25.9 million for the year ended December 31, 2024. For further details, see Note 3 “Significant transactions”.
During the years ended December 31, 2023 and 2022, the Company recorded gains (losses) of $(15.0) million and $17.8 million, respectively, from the change in fair value of the Merger Warrants. As of December 31, 2023, the estimated fair value of the Merger Warrants was $29.7 million recorded in the Liability-classified capital instruments line of the consolidated balance sheets.
Sirius Group Private Warrants
On February 26, 2021, the Company entered into an assumption agreement pursuant to which the Company agreed to assume all of the warrants issued on November 5, 2018 and November 28, 2018 (the “Private Warrants”) by Sirius Group to certain counterparties. The 5,418,434 Private Warrants were all exercised before their maturity on November 5, 2023.
Sirius Group Public Warrants
Under the merger agreement between Sirius Group and Easterly Acquisition Corporation (“Easterly”), each of Easterly’s existing issued and outstanding public warrants was converted into a warrant exercisable for Sirius Group common shares (“Sirius Group Public Warrants”). The Sirius Group Public Warrants expired without exercise on October 27, 2023.
Contingent Value Rights
On February 26, 2021, the Company entered into a contingent value rights agreement with respect to the consideration price of the Sirius Group acquisition. The contingent value rights (“CVRs”) became publicly traded on the OTCQX Best Market during the quarter ended June 30, 2021. The CVRs matured on February 26, 2023 and were settled for $38.5 million.
v3.25.0.1
Statutory requirements
12 Months Ended
Dec. 31, 2024
Insurance [Abstract]  
Statutory requirements
22. Statutory requirements
The Company’s insurance and reinsurance operations are subject to regulation and supervision in each of the jurisdictions where they are domiciled and licensed to conduct business. These regulations include certain restrictions on the amount of dividends or other distributions available to shareholders without prior approval of the insurance regulatory authorities. Statutory accounting differs from GAAP by jurisdiction in the reporting of certain reinsurance contracts, investments, subsidiaries, acquisition expenses, fixed assets, deferred income taxes, and certain other items.
Bermuda
The Insurance Act 1978 of Bermuda and related regulations, as amended ("Insurance Act"), regulates the insurance business of Bermuda-domiciled insurers and reinsurers. The Insurance Act imposes solvency and liquidity standards on Bermuda insurance companies, as well as auditing and reporting requirements. Under the Insurance Act, insurers and reinsurers are
required to maintain minimum statutory capital and surplus at a level equal to the greater of a minimum solvency margin ("MSM") and the Enhanced Capital Requirement ("ECR") which is established by reference to either a Bermuda Solvency Capital Requirement ("BSCR") model or an approved internal capital model. The BSCR model is a standardized statutory risk-based capital model that provides a method for determining an insurer's minimum required capital taking into account the risk characteristics of different aspects of the company's business. The Economic Balance Sheet (“EBS”) is an input to the BSCR which determines the Company’s ECR. The EBS regime prescribes the use of financial statements prepared in accordance with GAAP as the basis on which statutory financial statements are prepared, and those statutory financial statements form the starting basis for the EBS. The model also requires insurers to estimate insurance technical provisions, which consist of the insurer’s insurance related balances valued based on best-estimate cash flows, adjusted to reflect the time value of money, with the addition of a risk margin to reflect the uncertainty in the underlying cash flows. The BMA has established a target capital level which is set at 120% of the ECR. While the Company is not required to maintain statutory economic capital and surplus at this level, it serves as an early warning signal for the BMA, and failure to meet the target capital level may result in additional reporting requirements or increased regulatory oversight.
The BMA acts as the group supervisor for the Company. The Company is currently completing its group BSCR for the year ended December 31, 2024, which must be filed with the BMA on or before May 31, 2025, and at this time, the Company believes it will exceed the target level of required statutory economic capital and surplus. During 2024 and 2023, the Company did not pay any dividends to its common shareholders.
The Company has two Bermuda based insurance subsidiaries: SiriusPoint Bermuda, a Class 4 insurer, and Alstead Re, a Class 3A insurer. Each of these Bermuda insurance subsidiaries are registered under the Insurance Act and are subject to regulation and supervision of the BMA. The Company is currently completing its BSCRs for SiriusPoint Bermuda and Alstead Re for the year ended December 31, 2024, which must be filed with the BMA on or before April 30, 2025, and at this time, the Company believes it will exceed the target level of required statutory economic capital and surplus. Each of the Company’s Bermuda based insurance subsidiaries met their target level of required statutory economic capital and surplus for the year ended December 31, 2023. The following is a summary of available and required statutory economic capital and surplus of the Bermuda based insurance subsidiaries as of December 31, 2023:
December 31, 2023
Available statutory economic capital and surplus
SiriusPoint Ltd.$3,226.7 
SiriusPoint Bermuda3,639.7 
Alstead Re5.3 
Required statutory economic capital and surplus
SiriusPoint Ltd.1,264.5 
SiriusPoint Bermuda1,239.9 
Alstead Re$2.4 
The BMA has completed its assessment of the impact of the Bermuda CIT on statutory capital and surplus, and has permitted the elective inclusion of the Bermuda CIT, including deferred tax effects, in statutory capital and surplus starting as of December 31, 2024.
The following is a summary of the statutory net income for the Bermuda based insurance subsidiaries for the years ended December 31, 2024 and 2023:
20242023
SiriusPoint Bermuda$381.5 $416.8 
Alstead Re$0.2 $0.7 
The Bermuda based insurance subsidiaries are also required to maintain a minimum liquidity ratio whereby the value of their relevant assets are not less than 75% of the amount of their relevant liabilities for general business. As of December 31, 2024, all liquidity ratio requirements were met.
SiriusPoint Bermuda’s ability to pay dividends is limited under Bermuda law and regulations. SiriusPoint Bermuda may declare dividends subject to it continuing to meet its solvency and capital requirements, which includes continuing to hold statutory capital and surplus equal to or exceeding its ECR. In addition, SiriusPoint Bermuda is prohibited from declaring or paying in any fiscal year dividends of more than 25% of its prior year’s statutory capital and surplus unless SiriusPoint
Bermuda files with the BMA a signed affidavit by at least two members of the Board of Directors attesting that a dividend would not cause SiriusPoint Bermuda to fail to meet its capital requirements. As of December 31, 2024, SiriusPoint Bermuda could pay dividends of approximately $712.7 million (2023 - $810.0 million) without providing an affidavit to the BMA. SiriusPoint Bermuda indirectly owns SiriusPoint International, SiriusPoint America, and SiriusPoint’s other insurance and reinsurance operating companies, each of which are limited in their ability to pay dividends by the insurance laws of their relevant jurisdictions.
Europe
The financial services industry in the United Kingdom is dual-regulated by the Financial Conduct Authority and the Prudential Regulation Authority (collectively, the "U.K. Regulators"). The U.K. Regulators regulate insurers, insurance intermediaries and Lloyd's. The U.K. Regulators and Lloyd's have common objectives in ensuring that the Lloyd's market is appropriately regulated. Lloyd's is required to implement certain rules prescribed by the U.K. Regulators by the powers it has under the Lloyd's Act of 1982 relating to the operation of the Lloyd's market, including the principles based oversight framework. In addition, each year the U.K. Regulators require Lloyd's to satisfy an annual solvency test that measures whether Lloyd's has sufficient assets in the aggregate to meet all the outstanding liabilities of its members.
Lloyd's permits its corporate and individual members ("Members") to underwrite insurance risks through Lloyd's syndicates. Members of Lloyd's may participate in a syndicate for one or more underwriting years by providing capital to support the syndicate's underwriting. All syndicates are managed by Lloyd's approved managing agents. Managing agents receive fees and profit commissions in respect of the underwriting and administrative services they provide to the syndicates. Lloyd's prescribes, in respect of its managing agents and Members, certain minimum standards relating to their management and control, solvency and various other requirements.
The Company participates in the Lloyd's market through the 100% ownership of SiriusPoint Corporate Member Ltd., a Lloyd's corporate member, which in turn provides underwriting stamp capacity to Syndicate 1945. The Company has its own Lloyd's managing agent, SiriusPoint International Managing Agency, which manages Syndicate 1945. Lloyd's approved net capacity for 2024 was £144.0 million, or approximately $180.4 million (based on the December 31, 2024 GBP to USD exchange rate). Stamp capacity is a measure of the amount of net premium (premiums written less acquisition costs) that a syndicate is authorized by Lloyd's to write.
SiriusPoint International is subject to regulation and supervision by the Swedish Financial Supervisory Authority ("SFSA"). Under Solvency II, the SFSA also acts as the European Economic Area group supervisor, with Sirius Group International S.a.r.l. ("SGI") serving as the highest European entity subject to the SFSA's group supervision. Solvency II regulation in Europe gives the SFSA the option to waive European-level group supervision if certain legal requirements are met. As of December 31, 2024, the SFSA has not exercised this option.
For the year ended December 31, 2024, SiriusPoint International’s statutory net income was $146.9 million (2023 - $152.0 million). The Company is currently completing its statutory returns for SiriusPoint International and SGI for the year ended December 31, 2024, which must be filed with the SFSA on or before April 8, 2025 and May 20, 2025, respectively, and at this time, the Company believes it will exceed the target level of required capital and surplus.
SiriusPoint International has the ability to pay dividends to its immediate parent subject to the availability of unrestricted equity, calculated in accordance with the Swedish Act on Annual Accounts in Insurance Companies and the SFSA. Unrestricted equity is calculated on a consolidated group account basis and on a parent account basis. Differences between the two include but are not limited to accounting for goodwill, subsidiaries (with parent accounts stated at original foreign exchange rates), taxes and pensions. SiriusPoint International's ability to pay dividends is limited to the "lower of" unrestricted equity as calculated within the group and parent accounts. As of December 31, 2024, SiriusPoint International had $334.5 million (based on the December 31, 2024 SEK to USD exchange rate) of unrestricted equity on a stand alone basis (the lower of the two approaches) available to pay dividends in 2024 (2023 - $628.1 million). The amount of dividends available to be paid by SiriusPoint International in any given year is also subject to cash flow and earnings generated by SiriusPoint International's business, the maintenance of adequate solvency capital ratios for SiriusPoint International and the consolidated SGI group, as well as to dividends received from its subsidiaries. Earnings generated by SiriusPoint International's business that are allocated to the Safety Reserve are not available to pay dividends (see "Safety Reserve" below). During 2024, SiriusPoint International declared a dividend of SEK 4,055.5 million (or $370.9 million on date of declaration) and paid SEK 3,335.4 million (or $306.0 million on date of payment) of dividends declared prior to 2024.
U.S.
SiriusPoint America, SiriusPoint Specialty Insurance Corporation (“SiriusPoint Specialty”) and Oakwood Insurance Company (“Oakwood”) are subject to regulation and supervision by the National Association of Insurance Commissioners ("NAIC") and the department of insurance in the state of domicile. The NAIC uses risk-based capital ("RBC") standards for U.S. property and casualty insurers as a means of monitoring certain aspects affecting the overall financial condition of insurance companies.
The following is a summary of estimated required statutory capital and surplus of the U.S. based insurance and reinsurance subsidiaries as of December 31, 2024 and actual amounts as of December 31, 2023:
December 31, 2024December 31, 2023
Estimated statutory capital and surplus
SiriusPoint America$639.4 $626.9 
SiriusPoint Specialty78.3 72.5 
Oakwood40.7 40.0 
Required statutory capital and surplus(1)
SiriusPoint America 192.0 177.0 
SiriusPoint Specialty14.7 9.7 
Oakwood$0.3 $0.3 
(1)Equals the authorized control level of the NAIC risk-based capital. The subsidiaries’ available capital exceeded their respective RBC requirements.
The following is a summary of the statutory net income for the U.S. based insurance and reinsurance subsidiaries for the years ended December 31, 2024 and 2023:
20242023
SiriusPoint America$41.2 $51.1 
SiriusPoint Specialty3.9 15.0 
Oakwood$0.7 $0.6 
The principal differences between the statutory amounts and the amounts reported in accordance with GAAP include deferred acquisition costs, deferred taxes, gains recognized under retroactive reinsurance contracts and market value adjustments for debt securities.
Under the normal course of business, SiriusPoint America has the ability to pay dividends to its immediate parent during any twelve-month period without the prior approval of regulatory authorities in an amount set by a formula based on the lesser of net investment income, as defined by statute, or 10% of statutory surplus, in both cases as most recently reported to regulatory authorities, subject to the availability of earned surplus and subject to dividends paid in prior periods. Based on this formula, SiriusPoint America has dividend capacity as of December 31, 2024, without prior regulatory approval. As of December 31, 2024, SiriusPoint America had approximately $639.4 million (2023 - $626.9 million) of statutory surplus and $70.0 million (2023 - $72.0 million) of earned surplus, and could pay approximately $63.9 million (2023 - $62.6 million) to its parent company. During 2024, SiriusPoint America did not pay a dividend to its immediate parent.
Safety Reserve
Subject to certain limitations under Swedish law, SiriusPoint International is permitted to transfer pre-tax income amounts into a reserve referred to as a "Safety Reserve." Under local statutory requirements, an amount equal to the deferred tax liability on SiriusPoint International's Safety Reserve is included in Solvency Capital. Access to the Safety Reserve is generally restricted to cover insurance and reinsurance losses and to cover a breach of the Solvency Capital Requirement.
As of December 31, 2024, SiriusPoint International's Safety Reserve was SEK5.7 billion, or $521.0 million (based on the December 31, 2024 SEK to USD exchange rate). Under Swedish GAAP, an amount equal to the Safety Reserve, net of a related deferred tax liability established at the Swedish tax rate, is classified as common shareholders' equity. Generally, this deferred tax liability ($107.3 million based on the December 31, 2024 SEK to USD exchange rate) is required to be paid by SiriusPoint International if it fails to maintain prescribed levels of premium writings and loss reserves in future years.
v3.25.0.1
Subsequent events
12 Months Ended
Dec. 31, 2024
Subsequent Events [Abstract]  
Subsequent events
23. Subsequent events
California Wildfires
The Company’s preliminary pre-tax estimate of losses, net of reinsurance and reinstatement premiums, related to the California Wildfires, which occurred at the beginning of 2025, is a range of approximately $60 million to $70 million and will be included in the Company’s results in the first quarter of 2025. The estimate is based on the Company’s ground-up assessment of client exposed business.
v3.25.0.1
Schedule I - Summary of Investments - Other than Investments in Related Parties
12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]  
Schedule I - Summary of Investments - Other than Investments in Related Parties
Schedule I - Summary of Investments - Other than Investments in Related Parties
As of December 31, 2024
(expressed in millions of U.S. dollars)
 Cost or amortized cost Fair value Balance sheet value
Assets
Asset-backed securities$1,142.7 $1,149.7 $1,149.7 
Residential mortgage-backed securities985.8 973.8 973.8 
Commercial mortgage-backed securities224.2 224.5 224.5 
Corporate debt securities1,905.2 1,899.9 1,899.9 
U.S. government and government agency861.0 859.0 859.0 
Non-U.S. government and government agency24.9 24.1 24.1 
Total debt securities, available for sale5,143.8 5,131.0 5,131.0 
Asset-backed securities54.7 53.1 53.1 
Residential mortgage-backed securities56.4 48.7 48.7 
Commercial mortgage-backed securities56.8 51.8 51.8 
Corporate debt securities15.1 4.6 4.6 
U.S. government and government agency4.3 4.0 4.0 
Total debt securities, trading187.3 162.2 162.2 
Total short-term investments95.3 95.8 95.8 
Total other long-term investments97.2 99.3 99.3 
Total investments in securities$5,523.6 $5,488.3 $5,488.3 
v3.25.0.1
Schedule II - Condensed Financial Information of Registrant
12 Months Ended
Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]  
Schedule II - Condensed Financial Information of Registrant
Schedule II - Condensed Financial Information of Registrant (1)
Balance Sheets
As of December 31, 2024 and 2023
(expressed in millions of U.S. dollars)
December 31, 2024December 31, 2023
Assets
Total investments$0.2 $1.5 
Cash and cash equivalents14.2 12.3 
Investment in subsidiaries2,864.7 3,294.4 
Deferred tax asset75.1 46.0 
Amounts due from affiliates112.6 16.1 
Other assets7.1 7.1 
Total assets$3,073.9 $3,377.4 
Liabilities
Accounts payable, accrued expenses and other liabilities$14.4 $10.0 
Liability-classified capital instruments— 67.3 
Share repurchase liability483.0 — 
Debt639.1 786.2 
Total liabilities1,136.5 863.5 
Shareholders’ equity
Series B preference shares200.0 200.0 
Common shares11.6 16.8 
Additional paid-in capital945.0 1,693.0 
Retained earnings784.9 601.0 
Accumulated other comprehensive loss(4.1)3.1 
Total shareholders’ equity1,937.4 2,513.9 
Total liabilities and shareholders’ equity$3,073.9 $3,377.4 
(1)The condensed financial information should be read in conjunction with the consolidated financial statements and notes thereto.
Schedule II - Condensed Financial Information of Registrant (1)
Statements of Income (Loss)
For the years ended December 31, 2024, 2023 and 2022
202420232022
Revenues
Net investment income and realized and unrealized investment gains (losses) $(0.8)$(3.5)$6.4 
Other revenues4.8 (0.4)3.2 
Loss on settlement and change in fair value of liability-classified capital instruments(148.5)(59.4)27.4 
Equity in earnings (losses) of subsidiaries381.5 471.6 (360.2)
Total revenues237.0 408.3 (323.2)
Expenses
Net corporate and other expenses39.5 45.2 64.9 
Interest expense50.9 45.2 38.6 
Foreign exchange (gains) losses(24.2)9.1 (38.1)
Total expenses66.2 99.5 65.4 
Income (loss) before income tax benefit170.8 308.8 (388.6)
Income tax benefit29.1 46.0 1.8 
Net income (loss) available to SiriusPoint199.9 354.8 (386.8)
Dividends on Series B preference shares(16.0)(16.0)(16.0)
Net income (loss) available to SiriusPoint common shareholders$183.9 $338.8 $(402.8)
(1)The condensed financial information should be read in conjunction with the consolidated financial statements and notes thereto.
Schedule II - Condensed Financial Information of Registrant (1)
Statements of Comprehensive Income (Loss)
For the years ended December 31, 2024, 2023 and 2022
202420232022
Comprehensive income (loss)
Net income (loss) available to SiriusPoint$199.9 $354.8 $(386.8)
Other comprehensive income (loss)
Change in foreign currency translation, net of tax1.1 1.1 (5.0)
Unrealized gains (losses) from debt securities held as available for sale investments1.3 38.9 (42.5)
Reclassifications from accumulated other comprehensive income (loss)(9.6)8.1 2.7 
Total other comprehensive income (loss)(7.2)48.1 (44.8)
Comprehensive income (loss) available to SiriusPoint$192.7 $402.9 $(431.6)
(1)The condensed financial information should be read in conjunction with the consolidated financial statements and notes thereto.
Schedule II - Condensed Financial Information of Registrant (1)
Statements of Cash Flow
For the years ended December 31, 2024, 2023 and 2022
202420232022
Operating activities
Net income (loss) available to SiriusPoint$199.9 $354.8 $(386.8)
Adjustments to reconcile net income available to SiriusPoint to net cash provided by operating activities:
Equity in (earnings) losses of subsidiaries(381.5)(471.6)360.2 
Dividend received by parent714.0 101.2 125.0 
Share compensation expense20.7 21.4 30.6 
Net realized and unrealized (gain) loss on investments and derivatives1.3 3.5 (6.4)
Amortization of premium and accretion of discount, net0.7 17.3 (0.5)
Other revenues— 59.4 (27.4)
Change in fair value of liability-classified capital instruments31.9 — — 
Other items, net(23.6)(8.5)(38.0)
Changes in assets and liabilities:
Deferred tax asset(29.1)(46.0)— 
Other assets— 5.7 (0.1)
Accounts payable, accrued expenses and other liabilities4.4 (5.3)(2.5)
Amounts due to affiliates(6.5)(1.4)(28.3)
Net cash provided by operating activities532.2 30.5 25.8 
Investing activities
Proceeds from sales and maturities of investments— 14.4 — 
Net cash provided by (used in) investing activities— 14.4 — 
Financing activities
Settlement of liability-classified capital instruments(99.2)(38.5)— 
Net proceeds from exercise of options and warrants18.4 27.8 — 
Cash dividends paid to preference shareholders(16.0)(16.0)(16.0)
Taxes paid on withholding shares(9.8)(11.5)(7.1)
Purchases of SiriusPoint common shares under share repurchase program(299.7)— (5.0)
Payment of redemption of debt(517.9)— — 
Proceeds from issuance of debt, net of costs393.9 — — 
Net cash used in financing activities(530.3)(38.2)(28.1)
Net increase (decrease) in cash, cash equivalents and restricted cash1.9 6.7 (2.3)
Cash, cash equivalents and restricted cash at beginning of year12.3 5.6 7.9 
Cash, cash equivalents and restricted cash at end of year$14.2 $12.3 $5.6 
(1)The condensed financial information should be read in conjunction with the consolidated financial statements and notes thereto.
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Schedule III - Supplementary Insurance Information
12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]  
Schedule III - Supplementary Insurance Information
Schedule III - Supplementary Insurance Information
As of and for the years ended December 31, 2024, 2023 and 2022
(expressed in millions of U.S. dollars)

As of and for the year ended December 31, 2024
Deferred acquisition costs, netLoss and loss adjustment expense reservesUnearned premiumNet premiums earnedNet investment income and net realized and unrealized investment gains (losses)Loss and loss adjustment expenses incurred, netAcquisition costs, netOther underwriting expensesNet premiums written
Reinsurance$156.6 $2,185.4 $709.8 $1,045.1 $— $554.3 $279.9 $86.1 $1,104.7 
Insurance & Services170.8 1,529.4 929.0 1,154.0 — 714.1 284.7 80.0 1,236.2 
Corporate & Eliminations(1)
0.1 1,939.1 0.4 144.4 224.6 100.1 (47.7)15.6 11.2 
$327.5 $5,653.9 $1,639.2 $2,343.5 $224.6 $1,368.5 $516.9 $181.7 $2,352.1 
As of and for the year ended December 31, 2023
Deferred acquisition costs, netLoss and loss adjustment expense reservesUnearned premiumNet premiums earnedNet investment income and net realized and unrealized investment lossesLoss and loss adjustment expenses incurred, netAcquisition costs, netOther underwriting expensesNet premiums written
Reinsurance$159.0 $2,459.1 $663.6 $1,031.4 $— $490.3 $252.2 $82.7 $1,061.0 
Insurance & Services130.9 1,729.7 927.0 1,249.2 — 815.4 295.5 94.3 1,282.7 
Corporate & Eliminations(1)
19.0 1,419.3 36.7 145.6 272.7 75.6 (75.0)19.3 94.2 
$308.9 $5,608.1 $1,627.3 $2,426.2 $272.7 $1,381.3 $472.7 $196.3 $2,437.9 
As of and for the year ended December 31, 2022
Deferred acquisition costs, netLoss and loss adjustment expense reservesUnearned premiumNet premiums earnedNet investment income and net realized and unrealized investment lossesLoss and loss adjustment expenses incurred, netAcquisition costs, netOther underwriting expensesNet premiums written
Reinsurance$175.7 $3,512.2 $843.9 $1,213.1 $— $855.9 $310.3 $113.8 $1,199.6 
Insurance & Services119.1 1,068.5 676.8 1,086.8 — 718.7 273.2 62.8 1,346.0 
Corporate & Eliminations(1)
0.1 688.0 0.4 18.2 (322.7)13.8 (121.6)7.9 3.6 
$294.9 $5,268.7 $1,521.1 $2,318.1 $(322.7)$1,588.4 $461.9 $184.5 $2,549.2 
(1)Corporate & Eliminations includes the results of all runoff business and non-underwriting income and expenses.
v3.25.0.1
Schedule IV - Reinsurance
12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]  
Schedule IV - Reinsurance
Schedule IV - Reinsurance
For the years ended December 31, 2024, 2023 and 2022
(expressed in millions of U.S. dollars)
Direct premiums writtenAssumed from other companiesCeded to other companiesNet amountPercentage of amount assumed to net
Year ended December 31, 2024$1,824.3 $1,420.3 $892.5 $2,352.1 60.4 %
Year ended December 31, 2023$1,678.7 $1,748.7 $989.5 $2,437.9 71.7 %
Year ended December 31, 2022$1,403.9 $2,005.8 $860.5 $2,549.2 78.7 %
v3.25.0.1
Schedule VI - Supplementary Information for Property-Casualty Insurance Operations
12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Abstract]  
Schedule VI - Supplementary Information for Property-Casualty Insurance Operations
Schedule VI - Supplementary Information for Property-Casualty Insurance Operations
As of and for the years ended December 31, 2024, 2023 and 2022
(expressed in millions of U.S. dollars)
Deferred acquisition costs, netLoss and
loss
adjustment
expense
reserves
Unearned premium reservesNet premiums earnedNet investment income and net realized and unrealized investment gains (losses)Loss and
loss
expenses
incurred
related
to current
year
Loss and loss
expenses
incurred
related to prior
year
Acquisition costs, netNet paid losses
and loss
expenses
Net
premiums
written
2024$327.5 $5,653.9 $1,639.2 $2,343.5 $224.6 $1,476.4 $(107.9)$516.9 $1,035.2 $2,352.1 
2023308.9 5,608.1 1,627.3 2,426.2 272.7 1,555.5 (174.2)472.7 1,184.7 2,437.9 
2022$294.9 $5,268.7 $1,521.1 $2,318.1 $(322.7)$1,609.7 $(21.3)$461.9 $1,255.3 $2,549.2 
v3.25.0.1
Pay vs Performance Disclosure - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Pay vs Performance Disclosure      
Net income (loss) available to SiriusPoint $ 199.9 $ 354.8 $ (386.8)
v3.25.0.1
Insider Trading Arrangements
3 Months Ended
Dec. 31, 2024
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.25.0.1
Insider Trading Policies and Procedures
12 Months Ended
Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]  
Insider Trading Policies and Procedures Adopted true
v3.25.0.1
Cybersecurity Risk Management and Strategy Disclosure
12 Months Ended
Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]  
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
The Company’s cybersecurity risk management strategy focuses on several areas:
Identification, Mitigation and Monitoring: The Company has implemented a comprehensive, cross-functional approach to assessing, identifying and managing material cybersecurity threats and applies a security-first mindset to our practices across the Company. The Company’s program is comprised of internal resources and external security consultants to provide guidance, oversight and support.
Technical Safeguards: The Company implements technical safeguards through a layered security approach and third-party platforms that are designed to protect the Company’s information systems from cybersecurity threats, including firewalls, intrusion prevention and detection systems, anti-malware functionality, data loss prevention and access controls, which are evaluated and improved through vulnerability assessments and cybersecurity threat intelligence, as well as outside audits and certifications.
Incident Response and Recovery Planning: The Company’s program includes controls and procedures to properly identify, classify and escalate certain cybersecurity incidents to provide management visibility and obtain direction from management as to the public disclosure and reporting of material incidents in a timely manner. The Company has established and maintains comprehensive incident response and disaster recovery plans designed to address the Company’s response to a cybersecurity incident. The Company conducts periodic tabletop exercises to test these plans and ensure personnel are familiar with their roles in a response scenario.
Third-Party Risk Management: The Company maintains a risk-based approach to identifying and overseeing material cybersecurity threats presented by third parties, including our MGA and TPA partners, that could adversely impact our business in the event of a material cybersecurity incident affecting those third-party systems.
Education and Awareness: The Company conducts regular, mandatory training and simulated phishing campaigns for all levels of employees regarding cybersecurity threats as a means to equip the Company’s employees with effective tools to address cybersecurity threats, and to communicate the Company’s evolving information security policies, standards, processes, and practices.
The Company conducts periodic assessment and testing of the Company’s policies, standards, processes, and practices in a manner intended to address cybersecurity threats and events. For example, the Company performs internal and external penetration tests and cyber red team and tabletop exercises. A cyber red team exercise is a simulated attack on an organization's computer systems and network, conducted by a team of security professionals who play the role of attackers (“the red team”). The goal of the red team is to find and exploit vulnerabilities in the organization's defenses like real attackers would. This helps the organization to identify and fix weaknesses in their security before they can be exploited by real attackers. A tabletop exercise is a discussion-based simulation where participants walk through a hypothetical scenario, typically related to an emergency or crisis, focused on preparedness and response. The results of such assessments, audits, and reviews are evaluated by management and reported to the Risk Capital Management Committee and the Board, and the Company adjusts its cybersecurity policies, standards, processes, and practices as necessary based on the information provided by these assessments, audits, and reviews.
Cybersecurity Risk Management Processes Integrated [Flag] true
Cybersecurity Risk Management Processes Integrated [Text Block] Identification, Mitigation and Monitoring: The Company has implemented a comprehensive, cross-functional approach to assessing, identifying and managing material cybersecurity threats and applies a security-first mindset to our practices across the Company. The Company’s program is comprised of internal resources and external security consultants to provide guidance, oversight and support.
Technical Safeguards: The Company implements technical safeguards through a layered security approach and third-party platforms that are designed to protect the Company’s information systems from cybersecurity threats, including firewalls, intrusion prevention and detection systems, anti-malware functionality, data loss prevention and access controls, which are evaluated and improved through vulnerability assessments and cybersecurity threat intelligence, as well as outside audits and certifications.
Incident Response and Recovery Planning: The Company’s program includes controls and procedures to properly identify, classify and escalate certain cybersecurity incidents to provide management visibility and obtain direction from management as to the public disclosure and reporting of material incidents in a timely manner. The Company has established and maintains comprehensive incident response and disaster recovery plans designed to address the Company’s response to a cybersecurity incident. The Company conducts periodic tabletop exercises to test these plans and ensure personnel are familiar with their roles in a response scenario.
Cybersecurity Risk Management Third Party Engaged [Flag] true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] false
Cybersecurity Risk Board of Directors Oversight [Text Block]
The Board, in coordination with the Risk Capital Management Committee, oversees the Company’s risk management program, including the management of cybersecurity threats. The Board and the Risk Capital Management Committee each receive regular presentations and reports on developments in the cybersecurity space, including risk management practices, recent developments, evolving standards, vulnerability assessments, third-party and independent reviews, the threat environment, technological trends, and information security issues encountered by the Company’s peers and third parties. The Board and the Risk Capital Management Committee also receive prompt and timely information regarding any cybersecurity risk, as well as ongoing updates regarding any such risk. On a quarterly basis, the Board and the Risk Capital
Management Committee discuss the Company’s approach to overseeing cybersecurity threats with the Company’s Chief Information Security Officer (“CISO”) and other members of senior management.
The CISO, in coordination with senior management including the Chief Executive Officer, Chief Financial Officer, Chief Information and Technology Officer (“CITO”) and Chief Legal Officer, works collaboratively across the Company to implement a program designed to protect the Company’s information systems from cybersecurity threats and to promptly respond to any material cybersecurity incidents in accordance with the Company’s incident response and recovery plans. To facilitate the success of the Company’s cybersecurity program, cross-functional teams throughout the Company address cybersecurity threats and respond to cybersecurity incidents. Through ongoing communications with these teams, the CISO and senior management are informed about and monitor the prevention, detection, mitigation and remediation of cybersecurity threats and incidents in real-time, and report such threats and incidents to the Risk Capital Management Committee when appropriate.
The CISO has served in various roles in information technology and information security for over 20 years. The CISO holds undergraduate and graduate degrees in computer information systems and has attained the Certified Information Systems Security Professional certification. The CITO has served in various roles in information technology for over 20 years, including serving as Chief Information Officer and providing cybersecurity oversight at private and public sector companies.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] The CISO, in coordination with senior management including the Chief Executive Officer, Chief Financial Officer, Chief Information and Technology Officer (“CITO”) and Chief Legal Officer, works collaboratively across the Company to implement a program designed to protect the Company’s information systems from cybersecurity threats and to promptly respond to any material cybersecurity incidents in accordance with the Company’s incident response and recovery plans.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
The Board, in coordination with the Risk Capital Management Committee, oversees the Company’s risk management program, including the management of cybersecurity threats. The Board and the Risk Capital Management Committee each receive regular presentations and reports on developments in the cybersecurity space, including risk management practices, recent developments, evolving standards, vulnerability assessments, third-party and independent reviews, the threat environment, technological trends, and information security issues encountered by the Company’s peers and third parties. The Board and the Risk Capital Management Committee also receive prompt and timely information regarding any cybersecurity risk, as well as ongoing updates regarding any such risk. On a quarterly basis, the Board and the Risk Capital
Management Committee discuss the Company’s approach to overseeing cybersecurity threats with the Company’s Chief Information Security Officer (“CISO”) and other members of senior management.
The CISO, in coordination with senior management including the Chief Executive Officer, Chief Financial Officer, Chief Information and Technology Officer (“CITO”) and Chief Legal Officer, works collaboratively across the Company to implement a program designed to protect the Company’s information systems from cybersecurity threats and to promptly respond to any material cybersecurity incidents in accordance with the Company’s incident response and recovery plans. To facilitate the success of the Company’s cybersecurity program, cross-functional teams throughout the Company address cybersecurity threats and respond to cybersecurity incidents. Through ongoing communications with these teams, the CISO and senior management are informed about and monitor the prevention, detection, mitigation and remediation of cybersecurity threats and incidents in real-time, and report such threats and incidents to the Risk Capital Management Committee when appropriate.
Cybersecurity Risk Role of Management [Text Block]
The Board, in coordination with the Risk Capital Management Committee, oversees the Company’s risk management program, including the management of cybersecurity threats. The Board and the Risk Capital Management Committee each receive regular presentations and reports on developments in the cybersecurity space, including risk management practices, recent developments, evolving standards, vulnerability assessments, third-party and independent reviews, the threat environment, technological trends, and information security issues encountered by the Company’s peers and third parties. The Board and the Risk Capital Management Committee also receive prompt and timely information regarding any cybersecurity risk, as well as ongoing updates regarding any such risk. On a quarterly basis, the Board and the Risk Capital
Management Committee discuss the Company’s approach to overseeing cybersecurity threats with the Company’s Chief Information Security Officer (“CISO”) and other members of senior management.
The CISO, in coordination with senior management including the Chief Executive Officer, Chief Financial Officer, Chief Information and Technology Officer (“CITO”) and Chief Legal Officer, works collaboratively across the Company to implement a program designed to protect the Company’s information systems from cybersecurity threats and to promptly respond to any material cybersecurity incidents in accordance with the Company’s incident response and recovery plans. To facilitate the success of the Company’s cybersecurity program, cross-functional teams throughout the Company address cybersecurity threats and respond to cybersecurity incidents. Through ongoing communications with these teams, the CISO and senior management are informed about and monitor the prevention, detection, mitigation and remediation of cybersecurity threats and incidents in real-time, and report such threats and incidents to the Risk Capital Management Committee when appropriate.
The CISO has served in various roles in information technology and information security for over 20 years. The CISO holds undergraduate and graduate degrees in computer information systems and has attained the Certified Information Systems Security Professional certification. The CITO has served in various roles in information technology for over 20 years, including serving as Chief Information Officer and providing cybersecurity oversight at private and public sector companies.
Cybersecurity Risk Management Positions or Committees Responsible [Flag] true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block] The CISO, in coordination with senior management including the Chief Executive Officer, Chief Financial Officer, Chief Information and Technology Officer (“CITO”) and Chief Legal Officer, works collaboratively across the Company to implement a program designed to protect the Company’s information systems from cybersecurity threats and to promptly respond to any material cybersecurity incidents in accordance with the Company’s incident response and recovery plans. To facilitate the success of the Company’s cybersecurity program, cross-functional teams throughout the Company address cybersecurity threats and respond to cybersecurity incidents. Through ongoing communications with these teams, the CISO and senior management are informed about and monitor the prevention, detection, mitigation and remediation of cybersecurity threats and incidents in real-time, and report such threats and incidents to the Risk Capital Management Committee when appropriate.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
The CISO has served in various roles in information technology and information security for over 20 years. The CISO holds undergraduate and graduate degrees in computer information systems and has attained the Certified Information Systems Security Professional certification. The CITO has served in various roles in information technology for over 20 years, including serving as Chief Information Officer and providing cybersecurity oversight at private and public sector companies.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
The Board, in coordination with the Risk Capital Management Committee, oversees the Company’s risk management program, including the management of cybersecurity threats. The Board and the Risk Capital Management Committee each receive regular presentations and reports on developments in the cybersecurity space, including risk management practices, recent developments, evolving standards, vulnerability assessments, third-party and independent reviews, the threat environment, technological trends, and information security issues encountered by the Company’s peers and third parties. The Board and the Risk Capital Management Committee also receive prompt and timely information regarding any cybersecurity risk, as well as ongoing updates regarding any such risk. On a quarterly basis, the Board and the Risk Capital
Management Committee discuss the Company’s approach to overseeing cybersecurity threats with the Company’s Chief Information Security Officer (“CISO”) and other members of senior management.
The CISO, in coordination with senior management including the Chief Executive Officer, Chief Financial Officer, Chief Information and Technology Officer (“CITO”) and Chief Legal Officer, works collaboratively across the Company to implement a program designed to protect the Company’s information systems from cybersecurity threats and to promptly respond to any material cybersecurity incidents in accordance with the Company’s incident response and recovery plans. To facilitate the success of the Company’s cybersecurity program, cross-functional teams throughout the Company address cybersecurity threats and respond to cybersecurity incidents. Through ongoing communications with these teams, the CISO and senior management are informed about and monitor the prevention, detection, mitigation and remediation of cybersecurity threats and incidents in real-time, and report such threats and incidents to the Risk Capital Management Committee when appropriate.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] true
v3.25.0.1
Significant accounting policies (Policies)
12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Use of estimates
The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The major estimates reflected in the Company’s consolidated financial statements include, but are not limited to, the loss and loss adjustment expense reserves, estimates of written and earned premiums and fair value of financial instruments.
Cash, cash equivalents and restricted cash
Cash and cash equivalents consist of cash held in banks and other short-term, highly liquid investments with original maturity dates of ninety days or less.
Restricted cash and cash equivalents consist of cash held in trust accounts securing obligations under certain reinsurance contracts and cash held in trust accounts securing letters of credit issued under credit facilities.
Premium revenue recognition
The Company recognizes premiums written ratably over the term of the related insurance policy or reinsurance treaty consistent with the timing of when the ceding company has recognized the written premiums. Premiums written include amounts reported by brokers and ceding companies, supplemented by the Company's own estimates of premiums where reports have not been received. The determination of premium estimates requires a review of the Company's experience with the ceding companies, managing general underwriters, familiarity with each market, the timing of the reported information, an analysis and understanding of the characteristics of each class of business and management's judgment of the impact of various factors, including premium or loss trends, on the volume of business written and ceded to the Company. On an ongoing basis, the Company's underwriters review the amounts reported by these third parties for reasonableness based on their experience and knowledge of the subject class of business, taking into account the Company's historical experience with the brokers or ceding companies. Changes in premium estimates are expected and may result in adjustments in any reporting period. Any subsequent adjustments arising on such estimates are recorded in the period in which they are determined.
Unearned premiums represent the portion of premiums written that relate to the remaining term of the underlying policies in force.
Reinsurance premiums ceded, Funds held, Reinsurance and Retroactive Reinsurance
The Company reduces the risk of losses on business written by reinsuring certain risks and exposures with other reinsurers. The Company remains liable to the extent that any reinsurer fails to meet its obligations and to the extent that the Company does not hold sufficient security for their unpaid obligations. Ceded premiums are written during the period in which the risks incept and are earned over the contract period in proportion to the period of risk covered. Unearned premiums ceded consist of the unexpired portion of insurance and reinsurance ceded.
Funds held by ceding companies represent amounts due to the Company in connection with certain assumed reinsurance agreements in which the ceding company retains a portion of the premium to provide security against future loss payments. The funds held by ceding companies are generally invested by the ceding company and a contractually agreed interest amount is credited to the Company and recognized as investment income. These amounts are included in insurance and reinsurance balances receivable, net on the consolidated balance sheets.
Funds held under reinsurance treaties represent contractual payments due from the Company that have been retained to secure such obligations. These amounts are included in reinsurance balances payable on the consolidated balance sheets, and the associated interest is included in interest expense on the consolidated income statement.
Reinsurance recoverables include claims we paid and estimates of unpaid losses and loss adjustment expenses that are subject to reimbursement under reinsurance and retrocessional contracts. The method for determining reinsurance recoverables for unpaid losses and loss adjustment expenses involves reviewing actuarial estimates of gross unpaid losses and loss adjustment expenses to determine our ability to cede unpaid losses and loss adjustment expenses under our existing reinsurance contracts. This method is continually reviewed and updated and any resulting adjustments are reflected in earnings in the period identified. Reinsurance premiums, commissions and expense reimbursements are accounted for on a basis consistent with those used in accounting for the original policies issued and the term of the reinsurance contracts. Amounts recoverable from reinsurers for losses and loss adjustment expenses for which the Company has not been relieved of its legal obligations to the policyholder are reported as assets.
A loss portfolio transfer is a retroactive reinsurance contract. If the cumulative loss and loss adjustment expenses ceded under a loss portfolio transfer exceed the consideration paid, the resulting gain from such excess is deferred and amortized into earnings in future periods in proportion to actual recoveries under the loss portfolio transfer. In any period in which there is a revised estimate of loss and loss adjustment expenses and the loss portfolio transfer is in a gain position, the deferred gain is recalculated as if the revised estimate was available at the inception date of the loss portfolio transfer and the change in the deferred gain is recognized in earnings. The deferred gain is disclosed as a separate line item in the Company’s consolidated balance sheets and changes in the deferred gain are recognized within losses incurred in the Company’s income statement.
Deferred acquisition costs
Deferred acquisition costs consist of commissions, brokerage expenses, excise taxes and other costs which are directly attributable to the successful acquisition or renewal of contracts and vary with the production of business. These costs are deferred and amortized over the period in which the related premiums are earned. Amortization of deferred acquisition costs are shown net of contractual commissions earned on reinsurance ceded within acquisition expenses, net in the consolidated statements of net income (loss).
Acquisition costs also include profit commissions which are calculated and accrued based on the expected loss experience for contracts and recorded when the current loss estimate indicates that a profit commission is probable under the contract terms.
The Company evaluates the recoverability of deferred acquisition costs by determining if the sum of expected loss and loss adjustment expenses, expected dividends to policyholders, unamortized acquisition costs, and maintenance costs exceeds related unearned premiums and anticipated investment income. If a loss is probable on the unexpired portion of contracts in force, a premium deficiency loss is recognized.
Loss and loss adjustment expense reserves
The Company’s loss and loss adjustment expense reserves include case reserves, reserves for losses incurred but not yet reported (“IBNR reserves”). Case reserves are established for losses that have been reported, but not yet paid. IBNR reserves represent the estimated loss and loss adjustment expenses that have been incurred by insureds and reinsureds but not yet reported to the insurer or reinsurer, including unknown future development on loss and loss adjustment expenses that are known to the insurer or reinsurer. IBNR reserves are established by management based on actuarially determined estimates of ultimate loss and loss adjustment expenses.
Inherent in the estimate of ultimate loss and loss adjustment expenses are expected trends in claim severity and frequency and other factors that may vary significantly as claims are settled. Accordingly, ultimate loss and loss adjustment expenses may differ materially from the amounts recorded in the consolidated financial statements. These estimates are reviewed regularly and, as experience develops and new information becomes known, the reserves are adjusted as necessary. Such adjustments, if any, are recorded in the consolidated statements of income (loss) in the period in which they become known.
Deposit liabilities Certain contracts do not transfer sufficient insurance risk to be deemed reinsurance contracts and are accounted for using the deposit method of accounting. Management exercises judgment in determining whether contracts transfer sufficient risk to be accounted for as reinsurance contracts. Using the deposit method of accounting, a deposit liability, rather than written premium, is initially recorded based upon the consideration received less any explicitly identified premiums or fees. In subsequent periods, the deposit liability is adjusted by calculating the effective yield on the deposit to reflect actual payments to date and future expected payments. In some cases, the effective yield on the contract may be negative, which will result in the recognition of other income. Fixed interest credits on deposit accounted contracts are included in interest expense in the consolidated statements of net income (loss).
Service Fee Revenues
The Company’s consolidated MGA subsidiaries underwrite insurance products on behalf of the Company and third-party insurers. The Company earns commissions and fees associated with these policies which are recognized in Other Revenues. Generally, the performance obligation associated with these contracts is the placement of the policy, which is met on the effective date at which point the associated commission revenue is recognized in accordance with Accounting Standards Codification 606, Revenues from Contracts with Customers.
Fair value measurement The Company determines the fair value of financial instruments in accordance with current accounting guidance, which defines fair value and establishes a three level fair value hierarchy based upon the transparency of inputs used in the valuation of an asset or liability. Fair value is defined as the price that the Company would receive to sell an asset or would pay to transfer a liability in an orderly transaction between market participants at the measurement date. The Company determines the estimated fair value of each individual security utilizing the highest level inputs available.
Investments
Short-term investments
Short-term investments consist of U.S. treasury bills, certificates of deposit and other securities, which, at the time of purchase, mature within a period of greater than three months but less than one year. Short-term investments are classified as trading securities, carried at fair value and disclosed as a separate line item in the consolidated balance sheets.
Debt Securities
The Company’s investments are classified as either trading securities or available for sale (“AFS”). Trading securities are carried at fair value with changes in fair value included in earnings in the consolidated statements of income (loss). AFS securities are held at fair value, net of an allowance for credit losses, and any decline in fair value that is believed to arise from factors other than credit is recorded as a separate component of accumulated other comprehensive income (loss) in the consolidated statement of shareholders’ equity. The Company has elected to classify debt securities, other than short-term investments, purchased on or after April 1, 2022 as AFS.
The fair value of the Company’s investments are based on quoted market prices, or when such prices are not available, by reference to broker or underwriter bid indications, industry recognized pricing vendors, and/or internal pricing valuation techniques. Investment transactions are recorded on a trade date basis with balances pending settlement included in due to/from brokers in the consolidated balance sheets.
Realized gains and losses are determined using cost calculated on a specific identification basis and are reported pre-tax in revenues. Dividends are recorded on the ex-dividend date. Income and expenses are recorded on the accrual basis including interest and premiums amortized and discounts accreted.
Other long-term investments
Other long-term investments consist primarily of hedge funds, private equity funds, and strategic investments. The fair values of hedge funds and private equity funds that produce net asset value (“NAV”) are generally recorded based upon the Company's proportionate interest in the underlying fund's NAV, which is deemed to approximate fair value or the equity method where applicable. In addition, due to a lag in reporting, some of the fund managers, fund administrators or both, are unable to provide final fund valuations as of the Company's reporting date. In these circumstances and where the fair value option is elected, the Company uses all credible information available to estimate fair value. This includes utilizing preliminary estimates reported by its fund managers and using information that is available to the Company with respect to the underlying investments, as necessary. The changes in fair value are reported in pre-tax revenues in net realized and unrealized investment losses. Actual final fund valuations may differ from the Company's estimates and these differences are recorded in the period they become known as a change in estimates.
Other long-term investments include certain strategic investments that are carried at fair value, using the equity method or the cost adjusted for market observable events less impairment method. For strategic investments carried at fair value, management uses commonly accepted valuation methods (i.e., income approach, market approach). Where appropriate to utilize equity method, the Company recognizes its share of the investees’ income in net realized and unrealized investment losses. Where criteria to be accounted for under the equity method is not met, we have elected to value our strategic investments at the cost adjusted for market observable events less impairment method, a measurement alternative in which the investment is measured at cost and remeasured to fair value when determined to be impaired or upon observable transactions prices becoming available. See Note 8 for additional information.
Investments in related party investment funds
The Company invests in Third Point Enhanced LP (“TP Enhanced Fund”), Third Point Venture Offshore Fund I LP (“TP Venture Fund”) and Third Point Venture Offshore Fund II LP (“TP Venture Fund II”), (collectively, the “Related Party Investment Funds”), which are related party investment funds. The Company’s investments in the funds are stated at their fair value, that generally represents the Company’s proportionate interest in the funds as reported by the fund based on the NAV provided by the fund administrator. Increases or decreases in such fair value are recorded within net realized and unrealized investment gains (losses) from related party investment funds in the Company’s consolidated statements of income (loss). The Company records contributions and withdrawals related to its investments in the funds on the transaction date.
Derivative financial instruments
The Company holds derivative contracts to manage credit risk, interest rate risk, currency exchange risk and other exposure risks. The Company uses derivatives in connection with its risk-management activities to economically hedge certain risks and to gain exposure to certain investments. The utilization of derivative contracts also allows for an efficient means by which to trade certain asset classes.
Fair values of derivatives are determined by using quoted market prices, industry recognized pricing vendors and counterparty quotes when available; otherwise fair values were based on pricing models that consider the time value of money, volatility and the current market and contractual prices of underlying financial instruments.
Share-based compensation
The Company accounts for its share-based compensation transactions using the fair value of the award at the grant date and accounts for forfeitures when they occur. Determining the fair value of share purchase options at the grant date requires estimation and judgment. The Company uses an option-pricing model (Black-Scholes) to calculate the fair value of share purchase options and used simplified method to develop the estimate of expected term, where appropriate.
For share-based compensation awards that contain both a service and performance condition, the Company recognizes compensation expense only for the portion of the award that is considered probable of vesting. Fair value of share-based compensation awards considered probable of vesting are expensed over the requisite service period. The probability of share-based awards vesting is evaluated at each reporting period. Share-based compensation awards that contain only service condition and share purchase options are expensed ratably over the requisite service period.
Defined benefit plans
Certain SiriusPoint employees in Europe participate in defined benefit plans. The liability for the defined benefit plans that is reported on the consolidated balance sheets is the current value of the defined benefit obligation at the end of the period,
reduced by the fair value of the plan's assets, with adjustments for actuarial gains and losses. The defined benefit pension plan obligation is calculated annually by independent actuaries. The current value of the defined benefit obligation is determined through discounting of expected future cash flows, using interest rates determined by current market interest rates. The service costs and actuarial gains and losses on the defined benefit obligation and the fair value on the plan assets are recognized in the consolidated statements of income (loss).
Other underwriting expenses Other underwriting expenses primarily consist of general and administrative expenses and other operating income and expenses associated with underwriting activities, including salaries, benefits, information technology, and other costs.
Net corporate and other expenses Net corporate and other expenses include services expenses, costs associated with operating as a publicly-traded company, non-underwriting activities, including service fee expenses from our MGA subsidiaries, and current expected credit losses (“CECL”) from our insurance and reinsurance balances receivable and loss and loss adjustment expenses recoverable, corporate insurance costs, and severance charges.
Foreign currency exchange
The U.S. dollar is the functional currency for the Company’s businesses except for the Canadian reinsurance operations of SiriusPoint America Insurance Company. The Company invests in securities denominated in foreign currencies. Assets and liabilities recorded in these foreign currencies are translated into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are translated using the average exchange rates for the period. Net foreign exchange gains and losses arising from the translation of functional currencies are reported in shareholders’ equity, in accumulated other comprehensive income (loss). As of December 31, 2024, the Company had net unrealized foreign currency translation losses of $3.0 million recorded in accumulated other comprehensive income (loss) on its consolidated balance sheet (December 31, 2023 - $4.1 million).
For transactions denominated in currencies other than functional currency, the resulting exchange gains and losses are reported as a component of net income (loss) in the period in which they arise within net realized and unrealized investment gains (losses) and net foreign exchange gains (losses).
Federal and foreign income taxes
The Company provides for income taxes for its operations in income tax paying jurisdictions. The Company’s provision relies on estimates and interpretations of currently enacted tax laws. 
The Company recognizes deferred tax assets and liabilities based on the temporary differences between the financial statement carrying amounts and the tax bases of assets and liabilities. A valuation allowance against deferred tax assets is recorded if it is more likely than not that all, or some portion, of the benefits related to deferred tax assets will not be realized. Any adjustments to deferred income taxes are accounted for as changes in estimates and are reflected in the consolidated statements of income (loss) in the year in which they are made. Adjustments could be material and could significantly impact earnings in the year they are recorded.
The Company records the total effect of changes in tax laws or rates on deferred tax balances as a component of the income taxes related to continuing operations for the period in which the law is enacted.
Variable and voting interest entities
We evaluate our investments to determine whether those investments are variable interest entities ("VIEs") or voting interest entities (“VOEs”) and whether consolidation is required. The Company consolidates the results of operations and financial position of all VOEs in which it has a controlling financial interest and VIEs in which it is considered to be the primary beneficiary. The consolidation assessment, including the determination as to whether an entity qualifies as a VOE or VIE, depends on the facts and circumstances surrounding each entity.
A VIE is a legal entity that does not have sufficient equity at risk to finance its activities without additional subordinated financial support or is structured such that equity investors lack the ability to make significant decisions relating to the entity’s operations through voting rights or do not substantively participate in the gains and losses of the entity. Consolidation of a VIE by its primary beneficiary is not based on majority voting interest, but is based on other criteria discussed below.
VIEs are consolidated by the primary beneficiary, that being the investor that has the power to direct the activities of the VIE and that will absorb a portion of the VIE’s expected losses or residual returns that could potentially be significant to the VIE. For VIEs the Company determines it has a variable interest in, it determines whether it is the primary beneficiary of a VIE by performing an analysis that principally considers: (i) the VIE’s purpose and design, including the risks the VIE was designed to create and pass through to its variable interest holders; (ii) the VIE’s capital structure; (iii) the terms between the VIE and its variable interest holders and other parties involved with the VIE; (iv) which variable interest holders have the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance; (v) which variable interest holders have the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE; and (vi) related party relationships. The Company reassesses its initial determination of whether the Company is the primary beneficiary of a VIE upon changes in facts and circumstances that could potentially alter the Company’s assessment.
Noncontrolling interests The Company consolidates the results of entities in which it has a controlling financial interest. Noncontrolling interests are presented as a separate line within shareholders’ equity in the consolidated balance sheets. The Company records the portion of net income attributable to noncontrolling interests as a separate line within the consolidated statements of income (loss).
Earnings per share
Basic earnings per share is based on the weighted average number of common shares and participating securities outstanding during the period. The weighted average number of common shares excludes any dilutive effect of outstanding warrants, options and unvested restricted shares. Diluted earnings per share is based on the weighted average number of common shares and participating securities outstanding and includes any dilutive effects of warrants, options, and unvested restricted shares under share plans and are determined using the treasury stock method. U.S. GAAP requires that unvested share awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid (referred to as “participating securities”), be treated in the same manner as outstanding shares for earnings per share calculations. The Company treats certain of its unvested restricted shares as participating securities. In the event of a net loss, all participating securities, outstanding warrants, options and restricted shares are excluded from both basic and diluted loss per share since their inclusion would be anti-dilutive.
Leases Leases in which substantially all of the risks and rewards of ownership are retained by the lessor are classified as operating leases. The Company does not have any leases classified as finance leases. For its operating leases, the Company recognizes lease assets and liabilities on the balance sheet, with the exception of leases with an original term of 12 months or less. Lease assets and liabilities are initially recognized and measured based on the present value of the lease payments.
Segment information Under U.S. GAAP, operating segments are based on the internal information that management uses for allocating resources and assessing performance of the Company. The Company manages its business on the basis of two operating segments: Reinsurance and Insurance & Services.
Liability-classified capital instruments As part of the consideration transferred in the acquisition of Sirius Group, the Company issued various instruments that were classified as liabilities based on their terms, notably the settlement features for each and any potential adjustments to the exercise price for the warrants issued. Liability-classified capital instruments reported in the consolidated balance sheets include Series A preference shares, Merger Warrants, Private Warrants, Sirius Group Public Warrants, Upside Rights and Contingent Value Rights. The liability-classified capital instruments are carried at fair value with changes in fair value included in “Loss on settlement and change in fair value of liability-classified instruments” in the consolidated statements of income (loss). As of December 31, 2024 all of the instruments were settled, exercised or expired.
Business combinations The Company accounts for business combinations in accordance with Accounting Standards Codification ("ASC") Topic 805 Business Combinations, and intangible assets that arise from business combinations in accordance with ASC Topic 350 Intangibles – Goodwill and Other.
Intangible assets
Intangible assets arising from our business acquisitions are classified as either finite or indefinite-lived intangible assets. Finite-lived intangible assets are amortized over their useful lives with the amortization expense being recognized in the consolidated statements of income (loss). The amortization periods approximate the period over which the Company expects to generate future net cash inflows from the use of these assets. All of these assets are subject to impairment testing for the impairment or disposal of long-lived assets when events or conditions indicate that the carrying value of an asset may not be fully recoverable from future cash flows. Indefinite-lived intangible assets are however not subject to amortization. The carrying values of intangible assets are reviewed for indicators of impairment at least annually. The Company initially evaluates indefinite-lived intangible assets using a qualitative approach to determine whether it is more likely than not that the fair value is greater than its carrying value. If the results of the qualitative evaluation indicate that it is more likely than not that the carrying value exceeds its fair value, the Company performs the quantitative test for impairment. If indefinite-lived intangible assets are impaired, such assets are written down to their fair values with the related expense recognized in the consolidated statements of income (loss).
Recent accounting pronouncements
Issued and effective as of December 31, 2024
In June 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions (“ASU 2022-03”). The amendment clarifies the guidance in Topic 820 on the fair value measurement of an equity security that is subject to a contractual sale restriction and requires specific disclosures related to such an equity security. ASU 2022-03 is effective for public business entities for fiscal years beginning after December 15, 2023 and interim periods within those fiscal years. This pronouncement did not have a material impact on the Company’s consolidated financial statements.
In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (“ASU 2023-07”). The amendment improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. ASU 2023-07 is effective for public business entities for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Refer to Note 4 “Segment reporting” for disclosure related to this new pronouncement.
Issued but not yet effective as of December 31, 2024
In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2023-09, Accounting Standards Update 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 023-09”). The amendment enhances the transparency and decision usefulness of income tax disclosures. ASU 2023-09 is effective for public business entities for annual periods beginning after December 15, 2024. This new pronouncement is not expected to have a material impact on the Company’s consolidated financial statements.
In November 2024, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”). The amendment aims to provide additional details about expenses deemed important to understanding an entity’s performance, assessing its prospects for future cash flows, and comparing its performance both over time and with that of other entities. ASU 2024-03 is effective for annual reporting periods beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027. This new pronouncement is not expected to have a material impact on the Company’s consolidated financial statements.
All other accounting pronouncements issued during the year ended December 31, 2024 were either not relevant to the Company or did not impact the Company’s consolidated financial statements.
Reclassifications These reclassifications had no impact on the previously reported net income (loss) or shareholders’ equity attributable to SiriusPoint shareholders.
v3.25.0.1
Segment reporting (Tables)
12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
Schedule of operating segment results
The following is a summary of the Company’s operating segment results for the years ended December 31, 2024, 2023 and 2022:
2024
ReinsuranceInsurance & ServicesCore
Eliminations (2)
CorporateSegment Measure ReclassTotal
Gross premiums written
$1,335.6 $1,840.8 $3,176.4 $— $68.2 $— $3,244.6 
Net premiums written 1,104.7 1,236.2 2,340.9 — 11.2 — 2,352.1 
Net premiums earned 1,045.1 1,154.0 2,199.1 — 144.4 — 2,343.5 
Loss and loss adjustment expenses incurred, net 554.3 714.1 1,268.4 (5.5)105.6 — 1,368.5 
Acquisition costs, net279.9 284.7 564.6 (121.4)73.7 — 516.9 
Other underwriting expenses 86.1 80.0 166.1 — 15.6 — 181.7 
Underwriting income (loss)124.8 75.2 200.0 126.9 (50.5)— 276.4 
Services revenues— 222.9 222.9 (132.8)— (90.1)— 
Services expenses— 176.2 176.2 — — (176.2)— 
Net services fee income— 46.7 46.7 (132.8)— 86.1 — 
Services noncontrolling income— (2.1)(2.1)— — 2.1 — 
Net services income— 44.6 44.6 (132.8)— 88.2 — 
Segment income (loss)124.8 119.8 244.6 (5.9)(50.5)88.2 276.4 
Net investment income303.6 — 303.6 
Net realized and unrealized investment losses(88.7)— (88.7)
Net realized and unrealized investment gains from related party investment funds9.7 — 9.7 
Other revenues94.1 90.1 184.2 
Loss on settlement and change in fair value of liability-classified capital instruments(148.5)— (148.5)
Net corporate and other expenses(55.9)(176.2)(232.1)
Intangible asset amortization(11.9)— (11.9)
Interest expense(69.6)— (69.6)
Foreign exchange gains10.0 — 10.0 
Income (loss) before income tax expense$124.8 $119.8 244.6 (5.9)(7.7)2.1 233.1 
Income tax expense— — (30.7)— (30.7)
Net income (loss)244.6 (5.9)(38.4)2.1 202.4 
Net income attributable to noncontrolling interests— — (0.4)(2.1)(2.5)
Net income (loss) available to SiriusPoint$244.6 $(5.9)$(38.8)$— $199.9 
Attritional losses$579.8 $734.5 $1,314.3 $(5.5)$112.8 $— $1,421.6 
Catastrophe losses49.5 5.3 54.8 — — — 54.8 
Prior year loss reserve development(75.0)(25.7)(100.7)— (7.2)— (107.9)
Loss and loss adjustment expenses incurred, net$554.3 $714.1 $1,268.4 $(5.5)$105.6 $— $1,368.5 
Underwriting Ratios: (1)
Attritional loss ratio55.5 %63.6 %59.8 %60.7 %
Catastrophe loss ratio4.7 %0.5 %2.5 %2.3 %
Prior year loss development ratio(7.2)%(2.2)%(4.6)%(4.6)%
Loss ratio53.0 %61.9 %57.7 %58.4 %
Acquisition cost ratio26.8 %24.7 %25.7 %22.1 %
Other underwriting expenses ratio8.2 %6.9 %7.6 %7.8 %
Combined ratio
88.0 %93.5 %91.0 %88.3 %
(1)Underwriting ratios are calculated by dividing the related expense by net premiums earned.
(2)Insurance & Services MGAs recognize fees for service using revenue from contracts with customers accounting standards, whereas insurance companies recognize acquisition expenses using insurance contract accounting standards. While ultimate revenues and expenses recognized will match, there will be recognition timing differences based on the different accounting standards.
2023
ReinsuranceInsurance & ServicesCore
Eliminations (2)
CorporateSegment Measure ReclassTotal
Gross premiums written
$1,271.0 $2,039.7 $3,310.7 $— $116.7 $— $3,427.4 
Net premiums written1,061.0 1,282.7 2,343.7 — 94.2 — 2,437.9 
Net premiums earned1,031.4 1,249.2 2,280.6 — 145.6 — 2,426.2 
Loss and loss adjustment expenses incurred, net490.3 815.4 1,305.7 (5.4)81.0 — 1,381.3 
Acquisition costs, net252.2 295.5 547.7 (137.2)62.2 — 472.7 
Other underwriting expenses82.7 94.3 177.0 — 19.3 — 196.3 
Underwriting income (loss)206.2 44.0 250.2 142.6 (16.9)— 375.9 
Services revenues(1.1)238.6 237.5 (149.6)— (87.9)— 
Services expenses— 187.8 187.8 — — (187.8)— 
Net services fee income (loss)(1.1)50.8 49.7 (149.6)— 99.9 — 
Services noncontrolling income— (8.5)(8.5)— — 8.5 — 
Net services income (loss)(1.1)42.3 41.2 (149.6)— 108.4 — 
Segment income (loss)205.1 86.3 291.4 (7.0)(16.9)108.4 375.9 
Net investment income283.7 — 283.7 
Net realized and unrealized investment losses(10.0)— (10.0)
Net realized and unrealized investment losses from related party investment funds(1.0)— (1.0)
Other revenues9.9 87.9 97.8 
Loss on settlement and change in fair value of liability-classified capital instruments(59.4)— (59.4)
Net corporate and other expenses(70.4)(187.8)(258.2)
Intangible asset amortization(11.1)— (11.1)
Interest expense(64.1)— (64.1)
Foreign exchange losses(34.9)— (34.9)
Income before income tax benefit$205.1 $86.3 291.4 (7.0)25.8 8.5 318.7 
Income tax benefit— — 45.0 — 45.0 
Net income291.4 (7.0)70.8 8.5 363.7 
Net income attributable to noncontrolling interests— — (0.4)(8.5)(8.9)
Net income available to SiriusPoint$291.4 $(7.0)$70.4 $— $354.8 
Attritional losses$618.9 $840.7 $1,459.6 $(5.4)$76.5 $— $1,530.7 
Catastrophe losses12.2 1.3 13.5 — 11.3 — 24.8 
Prior year loss reserve development(140.8)(26.6)(167.4)— (6.8)— (174.2)
Loss and loss adjustment expenses incurred, net$490.3 $815.4 $1,305.7 $(5.4)$81.0 $— $1,381.3 
Underwriting Ratios: (1)
Attritional loss ratio60.0 %67.3 %64.0 %63.1 %
Catastrophe loss ratio1.2 %0.1 %0.6 %1.0 %
Prior year loss development ratio(13.7)%(2.1)%(7.3)%(7.2)%
Loss ratio47.5 %65.3 %57.3 %56.9 %
Acquisition cost ratio24.5 %23.7 %24.0 %19.5 %
Other underwriting expenses ratio8.0 %7.5 %7.8 %8.1 %
Combined ratio80.0 %96.5 %89.1 %84.5 %
(1)Underwriting ratios are calculated by dividing the related expense by net premiums earned.
(2)Insurance & Services MGAs recognize fees for service using revenue from contracts with customers accounting standards, whereas insurance companies recognize acquisition expenses using insurance contract accounting standards. While ultimate revenues and expenses recognized will match, there will be recognition timing differences based on the different accounting standards.
2022
ReinsuranceInsurance & ServicesCore
Eliminations(2)
CorporateSegment Measure ReclassTotal
Gross premiums written$1,521.4 $1,884.2 $3,405.6 $— $4.1 $— $3,409.7 
Net premiums written1,199.6 1,346.0 2,545.6 — 3.6 — 2,549.2 
Net premiums earned1,213.1 1,086.8 2,299.9 — 18.2 — 2,318.1 
Loss and loss adjustment expenses incurred, net855.9 718.7 1,574.6 (5.2)19.0 — 1,588.4 
Acquisition costs, net310.3 273.2 583.5 (118.6)(3.0)— 461.9 
Other underwriting expenses113.8 62.8 176.6 — 7.9 — 184.5 
Underwriting income (loss)(66.9)32.1 (34.8)123.8 (5.7)— 83.3 
Services revenue(0.2)215.7 215.5 (133.4)— (82.1)— 
Services expenses— 179.2 179.2 — — (179.2)— 
Net services fee income (loss)(0.2)36.5 36.3 (133.4)— 97.1 — 
Services noncontrolling loss— 1.1 1.1 — — (1.1)— 
Net services income (loss)(0.2)37.6 37.4 (133.4)— 96.0 — 
Segment income (loss)(67.1)69.7 2.6 (9.6)(5.7)96.0 83.3 
Net investment income113.3 — 113.3 
Net realized and unrealized investment losses(225.5)— (225.5)
Net realized and unrealized investment losses from related party investment funds(210.5)— (210.5)
Other revenues0.7 82.1 82.8 
Loss on settlement and change in fair value of liability-classified capital instruments27.4 27.4 
Net corporate and other expenses(133.6)(179.2)(312.8)
Intangible asset amortization(8.1)— (8.1)
Interest expense(38.6)— (38.6)
Foreign exchange gains66.0 — 66.0 
Income (loss) before income tax benefit$(67.1)$69.7 2.6 (9.6)(414.6)(1.1)(422.7)
Income tax benefit— — 36.7 — 36.7 
Net income (loss)2.6 (9.6)(377.9)(1.1)(386.0)
Net income attributable to noncontrolling interests— — (1.9)1.1 (0.8)
Net income (loss) available to SiriusPoint$2.6 $(9.6)$(379.8)$— $(386.8)
Attritional losses$728.4 $721.8 $1,450.2 $(5.2)$26.8 $— $1,471.8 
Catastrophe losses136.3 1.6 137.9 — — — 137.9 
Prior year loss reserve development(8.8)(4.7)(13.5)— (7.8)— (21.3)
Loss and loss adjustment expenses incurred, net$855.9 $718.7 $1,574.6 $(5.2)$19.0 $— $1,588.4 
Underwriting Ratios: (1)
Attritional loss ratio60.1 %66.4 %63.1 %63.5 %
Catastrophe loss ratio11.2 %0.1 %6.0 %5.9 %
Prior year loss development ratio(0.7)%(0.4)%(0.6)%(0.9)%
Loss ratio70.6 %66.1 %68.5 %68.5 %
Acquisition cost ratio25.6 %25.1 %25.4 %19.9 %
Other underwriting expenses ratio9.4 %5.8 %7.7 %8.0 %
Combined ratio105.6 %97.0 %101.6 %96.4 %
(1)Underwriting ratios are calculated by dividing the related expense by net premiums earned.
(2)Insurance & Services MGAs recognize fees for service using revenue from contracts with customers accounting standards, whereas insurance companies recognize acquisition expenses using insurance contract accounting standards. While ultimate revenues and expenses recognized will match, there will be recognition timing differences based on the different accounting standards.
Schedule of net premiums written by location and reportable segment
The following tables provide a breakdown of net premiums written by client location and underwriting location by reportable segment for the years ended December 31, 2024, 2023 and 2022:
2024
ReinsuranceInsurance & ServicesCorporateTotal
Net written premiums by client location:
United States and Canada$745.6 $679.0 $15.5 $1,440.1 
United Kingdom and Europe255.3 294.1 (1.7)547.7 
Bermuda, the Caribbean and Latin America28.1 165.0 (1.7)191.4 
Asia and Other75.7 98.1 (0.9)172.9 
Total net written premiums by client location$1,104.7 $1,236.2 $11.2 $2,352.1 
Net written premiums by underwriting location:
United States and Canada$447.5 $603.4 $(5.8)$1,045.1 
United Kingdom and Europe429.9 467.5 (6.4)891.0 
Bermuda, the Caribbean and Latin America227.3 165.3 23.4 416.0 
Total net written premiums by underwriting location$1,104.7 $1,236.2 $11.2 $2,352.1 
2023
ReinsuranceInsurance & ServicesCorporateTotal
Net written premiums by client location:
United States and Canada$750.6 $914.2 $4.1 $1,668.9 
United Kingdom and Europe172.1 243.4 4.1 419.6 
Bermuda, the Caribbean and Latin America(2.1)(2.4)(1.4)(5.9)
Asia and Other140.4 127.5 87.4 355.3 
Total net written premiums by client location$1,061.0 $1,282.7 $94.2 $2,437.9 
Net written premiums by underwriting location:
United States and Canada$516.6 $653.2 $92.0 $1,261.8 
United Kingdom and Europe345.9 280.7 4.4 631.0 
Bermuda, the Caribbean and Latin America198.5 348.8 0.7 548.0 
Asia and Other— — (2.9)(2.9)
Total net written premiums by underwriting location$1,061.0 $1,282.7 $94.2 $2,437.9 
2022
ReinsuranceInsurance & ServicesCorporateTotal
Net written premiums by client location:
United States and Canada$746.9 $1,139.5 $0.5 $1,886.9 
United Kingdom and Europe241.6 120.5 3.1 365.2 
Bermuda, the Caribbean and Latin America171.4 54.6 — 226.0 
Asia and Other39.7 31.4 — 71.1 
Total net written premiums by client location$1,199.6 $1,346.0 $3.6 $2,549.2 
Net written premiums by underwriting location:
United States and Canada$569.2 $931.3 $0.5 $1,501.0 
United Kingdom and Europe384.4 255.0 0.4 639.8 
Bermuda, the Caribbean and Latin America243.6 159.7 2.7 406.0 
Asia and Other2.4 — — 2.4 
Total net written premiums by underwriting location$1,199.6 $1,346.0 $3.6 $2,549.2 
v3.25.0.1
Cash, cash equivalents, restricted cash and restricted investments (Tables)
12 Months Ended
Dec. 31, 2024
Cash and Cash Equivalents [Abstract]  
Schedule of restrictions on cash and cash equivalents and investments
The following table provides a summary of cash and cash equivalents, restricted cash and restricted investments as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Cash and cash equivalents$682.0 $969.2 
Restricted cash securing letter of credit facilities (1)36.5 56.9 
Restricted cash securing reinsurance contracts (2)149.3 52.7 
Restricted cash held by managing general underwriters26.8 22.5 
Total cash, cash equivalents and restricted cash (3)894.6 1,101.3 
Restricted investments securing reinsurance contracts and letter of credit facilities (1) (2) (4)2,215.0 2,668.0 
Total cash, cash equivalents, restricted cash and restricted investments$3,109.6 $3,769.3 
(1)Restricted cash and restricted investments securing letter of credit facilities primarily pertains to letters of credit that have been issued to the Company’s clients in support of our obligations under reinsurance contracts. The Company will not be released from the obligation to provide these letters of credit until the reserves underlying the reinsurance contracts have been settled. The time period for which the Company expects each letter of credit to be in place varies from contract to contract but can last several years.
(2)Restricted cash and restricted investments securing reinsurance contracts pertain to trust accounts securing the Company’s contractual obligations under certain reinsurance contracts that the Company will not be released from until the underlying risks have expired or have been settled. Restricted investments include certain investments in debt securities, short-term investments and limited partnership interests in TP Enhanced Fund. The time period for which the Company expects these trust accounts to be in place varies from contract to contract, but can last several years.
(3)Cash, cash equivalents and restricted cash as reported in the Company’s consolidated statements of cash flows.
(4)Restricted investments include required deposits with certain insurance state regulatory agencies in order to maintain insurance licenses.
Schedule of cash and cash equivalents
The following table provides a summary of cash and cash equivalents, restricted cash and restricted investments as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Cash and cash equivalents$682.0 $969.2 
Restricted cash securing letter of credit facilities (1)36.5 56.9 
Restricted cash securing reinsurance contracts (2)149.3 52.7 
Restricted cash held by managing general underwriters26.8 22.5 
Total cash, cash equivalents and restricted cash (3)894.6 1,101.3 
Restricted investments securing reinsurance contracts and letter of credit facilities (1) (2) (4)2,215.0 2,668.0 
Total cash, cash equivalents, restricted cash and restricted investments$3,109.6 $3,769.3 
(1)Restricted cash and restricted investments securing letter of credit facilities primarily pertains to letters of credit that have been issued to the Company’s clients in support of our obligations under reinsurance contracts. The Company will not be released from the obligation to provide these letters of credit until the reserves underlying the reinsurance contracts have been settled. The time period for which the Company expects each letter of credit to be in place varies from contract to contract but can last several years.
(2)Restricted cash and restricted investments securing reinsurance contracts pertain to trust accounts securing the Company’s contractual obligations under certain reinsurance contracts that the Company will not be released from until the underlying risks have expired or have been settled. Restricted investments include certain investments in debt securities, short-term investments and limited partnership interests in TP Enhanced Fund. The time period for which the Company expects these trust accounts to be in place varies from contract to contract, but can last several years.
(3)Cash, cash equivalents and restricted cash as reported in the Company’s consolidated statements of cash flows.
(4)Restricted investments include required deposits with certain insurance state regulatory agencies in order to maintain insurance licenses.
v3.25.0.1
Fair value measurements (Tables)
12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Schedule of investments, categorized by the level of the fair value hierarchy
The following tables present the Company’s investments, categorized by the level of the fair value hierarchy as of December 31, 2024 and 2023:
December 31, 2024
 Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Total
 (Level 1) (Level 2) (Level 3)
Assets
Asset-backed securities$— $1,149.7 $— $1,149.7 
Residential mortgage-backed securities— 973.8 — 973.8 
Commercial mortgage-backed securities— 224.5 — 224.5 
Corporate debt securities— 1,899.9 — 1,899.9 
U.S. government and government agency859.0 — — 859.0 
Non-U.S. government and government agency— 24.1 — 24.1 
Total debt securities, available for sale859.0 4,272.0 — 5,131.0 
Asset-backed securities— 53.1 — 53.1 
Residential mortgage-backed securities— 48.7 — 48.7 
Commercial mortgage-backed securities— 51.8 — 51.8 
Corporate debt securities— 4.6 — 4.6 
U.S. government and government agency4.0 — — 4.0 
Total debt securities, trading4.0 158.2 — 162.2 
Short-term investments73.6 22.2 — 95.8 
Other long-term investments0.3 3.0 86.6 89.9 
Derivative assets— — 0.9 0.9 
$936.9 $4,455.4 $87.5 5,479.8 
Cost and equity method investments64.7 
Investments in funds valued at NAV161.9 
Total assets$5,706.4 
Liabilities
Derivative liabilities $— $— $14.3 $14.3 
Total liabilities$— $— $14.3 $14.3 
December 31, 2023
 Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Total
 (Level 1) (Level 2) (Level 3)
Assets
Asset-backed securities$— $880.7 $— $880.7 
Residential mortgage-backed securities— 902.8 — 902.8 
Commercial mortgage-backed securities— 204.1 — 204.1 
Corporate debt securities— 1,573.1 — 1,573.1 
U.S. government and government agency1,132.6 4.1 — 1,136.7 
Non-U.S. government and government agency— 58.0 — 58.0 
Total debt securities, available for sale1,132.6 3,622.8 — 4,755.4 
Asset-backed securities— 256.6 — 256.6 
Residential mortgage-backed securities— 57.2 — 57.2 
Commercial mortgage-backed securities— 67.8 — 67.8 
Corporate debt securities— 45.2 — 45.2 
U.S. Government and government agency98.1 — — 98.1 
Non-U.S. government and government agency— 10.0 — 10.0 
Total debt securities, trading98.1 436.8 — 534.9 
Short-term investments321.9 49.7 — 371.6 
Other long-term investments1.6 — 169.7 171.3 
Derivative assets— — 15.7 15.7 
$1,554.2 $4,109.3 $185.4 5,848.9 
Cost and equity method investments80.1 
Investments in funds valued at NAV164.3 
Total assets$6,093.3 
Liabilities
Liability-classified capital instruments$— $— $67.3 $67.3 
Derivative liabilities— — 6.4 6.4 
Total liabilities$— $— $73.7 $73.7 
Reconciliation of assets measured at fair value using Level 3 inputs
The following tables present the reconciliation of all investments measured at fair value using Level 3 inputs for the years ended December 31, 2024 and 2023:
January 1,
2024
Transfers in to (out of) Level 3PurchasesSales
Realized and Unrealized Gains (Losses) (1)
December 31,
2024
Assets
Other long-term investments$169.7 $— $— $— $(83.1)$86.6 
Derivative assets15.7 — — — (14.8)0.9 
Total assets$185.4 $— $— $— $(97.9)$87.5 
Liabilities
Liability-classified capital instruments$(67.3)$— $— $215.8 $(148.5)$— 
Derivative liabilities(6.4)— — 1.1 (9.0)(14.3)
Total liabilities$(73.7)$— $— $216.9 $(157.5)$(14.3)
January 1,
2023
Transfers in to (out of) Level 3PurchasesSales
Realized and Unrealized Gains (Losses) (1)
December 31,
2023
Assets
Preferred stocks$3.2 $— $— $(2.3)$(0.9)$— 
Other long-term investments227.3 (25.3)6.6 (14.7)(24.2)169.7 
Derivative assets9.5 — 2.8 (13.7)17.1 15.7 
Total assets$240.0 $(25.3)$9.4 $(30.7)$(8.0)$185.4 
Liabilities
Liability-classified capital instruments$(21.4)$— $— $3.8 $(49.7)$(67.3)
Derivative liabilities(8.6)— (5.1)18.5 (11.2)(6.4)
Total liabilities$(30.0)$— $(5.1)$22.3 $(60.9)$(73.7)
(1)Total change in realized and unrealized gains (losses) recorded on Level 3 financial instruments is included in total net investment income and realized and unrealized investment gains in the consolidated statements of income (loss). Realized and unrealized gains (losses) related to underwriting-related derivative assets and liabilities are included in other underwriting expenses, net of foreign exchange (gains) losses, in the consolidated statements of income (loss). Realized and unrealized gains (losses) on liability-classified capital instruments are included in loss on settlement and change in fair value of liability-classified capital instruments, in the consolidated statements of income (loss).
Reconciliation of liabilities measured at fair value using Level 3 inputs
The following tables present the reconciliation of all investments measured at fair value using Level 3 inputs for the years ended December 31, 2024 and 2023:
January 1,
2024
Transfers in to (out of) Level 3PurchasesSales
Realized and Unrealized Gains (Losses) (1)
December 31,
2024
Assets
Other long-term investments$169.7 $— $— $— $(83.1)$86.6 
Derivative assets15.7 — — — (14.8)0.9 
Total assets$185.4 $— $— $— $(97.9)$87.5 
Liabilities
Liability-classified capital instruments$(67.3)$— $— $215.8 $(148.5)$— 
Derivative liabilities(6.4)— — 1.1 (9.0)(14.3)
Total liabilities$(73.7)$— $— $216.9 $(157.5)$(14.3)
January 1,
2023
Transfers in to (out of) Level 3PurchasesSales
Realized and Unrealized Gains (Losses) (1)
December 31,
2023
Assets
Preferred stocks$3.2 $— $— $(2.3)$(0.9)$— 
Other long-term investments227.3 (25.3)6.6 (14.7)(24.2)169.7 
Derivative assets9.5 — 2.8 (13.7)17.1 15.7 
Total assets$240.0 $(25.3)$9.4 $(30.7)$(8.0)$185.4 
Liabilities
Liability-classified capital instruments$(21.4)$— $— $3.8 $(49.7)$(67.3)
Derivative liabilities(8.6)— (5.1)18.5 (11.2)(6.4)
Total liabilities$(30.0)$— $(5.1)$22.3 $(60.9)$(73.7)
(1)Total change in realized and unrealized gains (losses) recorded on Level 3 financial instruments is included in total net investment income and realized and unrealized investment gains in the consolidated statements of income (loss). Realized and unrealized gains (losses) related to underwriting-related derivative assets and liabilities are included in other underwriting expenses, net of foreign exchange (gains) losses, in the consolidated statements of income (loss). Realized and unrealized gains (losses) on liability-classified capital instruments are included in loss on settlement and change in fair value of liability-classified capital instruments, in the consolidated statements of income (loss).
Schedule of financial instruments for which the carrying value differs from the estimated fair values
The following table includes financial instruments for which the carrying value differs from the estimated fair values as of December 31, 2024 and 2023. The fair values of the below financial instruments are based on observable inputs and are considered Level 2 measurements.
December 31, 2024December 31, 2023
Fair ValueCarrying ValueFair ValueCarrying Value
2024 Senior Notes$411.2 $394.8 n/an/a
2017 SEK Subordinated Notes228.7 244.3 206.6 267.9 
2016 Senior Notes— — 370.0 403.5 
2015 Senior Notes— — 115.2 114.8 
Series B preference shares$206.0 $200.0 $197.4 $200.0 
v3.25.0.1
Investments (Tables)
12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Schedule of debt securities
The following tables provide the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses), and fair value of the Company's debt securities as of December 31, 2024 and 2023:
December 31, 2024
Cost or
amortized
cost
Gross
unrealized
gains
Gross
unrealized
losses
Net foreign
currency
gains
(losses)
Fair value
Debt securities, available for sale
Asset-backed securities$1,142.7 $11.2 $(4.2)$— $1,149.7 
Residential mortgage-backed securities985.8 8.3 (20.3)— 973.8 
Commercial mortgage-backed securities224.2 1.4 (1.1)— 224.5 
Corporate debt securities1,905.2 9.1 (10.4)(4.0)1,899.9 
U.S. government and government agency861.0 2.2 (4.2)— 859.0 
Non-U.S. government and government agency24.9 0.1 — (0.9)24.1 
Total debt securities, available for sale(1)
$5,143.8 $32.3 $(40.2)$(4.9)$5,131.0 
Debt securities, trading
Asset-backed securities$54.7 $— $(1.6)$— $53.1 
Residential mortgage-backed securities56.4 — (7.7)— 48.7 
Commercial mortgage-backed securities56.8 0.5 (5.5)— 51.8 
Corporate debt securities15.1 0.1 (10.6)— 4.6 
U.S. government and government agency4.3 — (0.3)— 4.0 
Total debt securities, trading$187.3 $0.6 $(25.7)$— $162.2 
December 31, 2023
Cost or
amortized
cost
Gross
unrealized
gains
Gross
unrealized
losses
Net foreign
currency
gains
(losses)
Fair value
Debt securities, available for sale
Asset-backed securities$882.2 $7.8 $(9.3)$— $880.7 
Residential mortgage-backed securities903.0 15.8 (16.0)— 902.8 
Commercial mortgage-backed securities204.0 1.6 (1.5)— 204.1 
Corporate debt securities1,569.6 12.0 (7.5)(1.0)1,573.1 
U.S. government and government agency1,137.8 5.5 (6.6)— 1,136.7 
Non-U.S. government and government agency58.0 0.2 (0.3)0.1 58.0 
Total debt securities, available for sale(1)
$4,754.6 $42.9 $(41.2)$(0.9)$4,755.4 
Debt securities, trading
Asset-backed securities$261.1 $0.6 $(5.1)$— $256.6 
Residential mortgage-backed securities67.0 — (9.8)— 57.2 
Commercial mortgage-backed securities76.7 0.1 (9.0)— 67.8 
Corporate debt securities52.2 — (7.0)— 45.2 
U.S. government and government agency100.8 — (2.7)— 98.1 
Non-U.S. government and government agency10.3 — (0.3)— 10.0 
Total debt securities, trading$568.1 $0.7 $(33.9)$— $534.9 
(1)As of December 31, 2024, the Company recorded an allowance for credit losses on the AFS portfolio of $1.1 million (December 31, 2023 - none).
Schedule of debt securities, available-for-sale, unrealized loss position, fair value Refer to the tables below for the Company’s breakdown of AFS debt securities in a gross unrealized loss position as of December 31, 2024 and December 31, 2023.
December 31, 2024
12 Months or LessGreater than 12 MonthsTotal
Fair valueGross unrealized lossesFair valueGross unrealized lossesFair valueGross unrealized losses
Debt securities, available for sale
Asset-backed securities$180.4 $(1.8)$23.8 $(2.4)$204.2 $(4.2)
Residential mortgage-backed securities437.4 (7.9)223.9 (12.4)661.3 (20.3)
Commercial mortgage-backed securities67.4 (0.7)7.5 (0.4)74.9 (1.1)
Corporate debt securities738.5 (10.0)46.8 (0.4)785.3 (10.4)
U.S. government and government agency247.2 (3.0)62.7 (1.2)309.9 (4.2)
Total debt securities, available for sale
$1,670.9 $(23.4)$364.7 $(16.8)$2,035.6 $(40.2)
December 31, 2023
12 Months or LessGreater than 12 MonthsTotal
Fair valueGross unrealized lossesFair valueGross unrealized lossesFair valueGross unrealized losses
Debt securities, available for sale
Asset-backed securities$307.2 $(8.5)$17.8 $(0.8)$325.0 $(9.3)
Residential mortgage-backed securities298.9 (9.8)134.3 (6.2)433.2 (16.0)
Commercial mortgage-backed securities87.7 (0.9)28.9 (0.6)116.6 (1.5)
Corporate debt securities593.1 (4.0)191.1 (3.5)784.2 (7.5)
U.S. government and government agency370.7 (2.6)209.9 (4.0)580.6 (6.6)
Non-U.S. government and government agency18.6 (0.1)10.0 (0.2)28.6 (0.3)
Total debt securities, available for sale
$1,676.2 $(25.9)$592.0 $(15.3)$2,268.2 $(41.2)
Schedule of debt securities by contractual maturity
The following table provides the cost or amortized cost and fair value of the Company's debt securities bifurcated into debt securities held for trading and AFS as of December 31, 2024 and 2023 by contractual maturity. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.
December 31, 2024December 31, 2023
Debt securities, AFSDebt securities, tradingDebt securities, AFSDebt securities, trading
Cost or
amortized cost
Fair valueCost or
amortized cost
Fair valueCost or
amortized cost
Fair valueCost or
amortized cost
Fair value
Due in one year or less$449.3 $448.2 $0.5 $0.5 $358.6 $357.2 $80.2 $79.7 
Due after one year through five years1,648.0 1,646.7 6.7 6.3 2,221.0 2,219.8 37.2 34.5 
Due after five years through ten years589.5 586.2 0.3 0.3 183.3 188.5 19.4 18.0 
Due after ten years104.3 101.9 11.9 1.6 2.5 2.3 26.6 21.3 
Mortgage-backed and asset-backed securities2,352.7 2,348.0 167.9 153.5 1,989.2 1,987.6 404.7 381.4 
Total debt securities$5,143.8 $5,131.0 $187.3 $162.2 $4,754.6 $4,755.4 $568.1 $534.9 
Schedule of the ratings and fair value of debt securities
The following table summarizes the ratings and fair value of debt securities held in the Company's investment portfolio as of December 31, 2024 and 2023. Credit ratings are assigned based on ratings provided by nationally recognized statistical rating organizations.
December 31, 2024December 31, 2023
Debt securities, AFSDebt securities, tradingDebt securities, AFSDebt securities, trading
AAA$808.5 $74.0 $730.4 $248.4 
AA2,227.9 54.0 2,334.4 177.0 
A1,375.0 6.9 1,122.1 28.9 
BBB659.2 24.2 515.5 71.7 
Other60.4 3.1 53.0 8.9 
Total debt securities$5,131.0 $162.2 $4,755.4 $534.9 
Schedule of equity securities and other long-term investments
The cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses), and fair values of the Company’s equity securities and other long-term investments as of December 31, 2024 and 2023 were as follows:
Cost or
amortized
cost
Gross
unrealized
gains
Gross
unrealized
losses
Net foreign
currency
gains (losses)
Fair value
December 31, 2024
Other long-term investments$317.8 $37.5 $(158.8)$3.5 $200.0 
December 31, 2023
Other long-term investments$358.1 $20.0 $(70.6)$2.6 $310.1 
The Company holds investments in hedge funds and private equity funds, which are included in other long-term investments. The carrying value of other long-term investments as of December 31, 2024 and 2023 were as follows:
December 31,
2024
December 31,
2023
Hedge funds and private equity funds (1)
$69.5 $74.5 
Strategic investments (2)
105.0 203.9 
Other investments (2)
25.5 31.7 
Total other long-term investments $200.0 $310.1 
(1)Includes $45.4 million of investments carried at NAV (December 31, 2023 - $58.7 million) and no investments classified as Level 3 (December 31, 2023 - no investments classified as Level 3) within the fair value hierarchy.
(2)As of December 31, 2024, the Company had $7.2 million of unfunded commitments relating to these investments (December 31, 2023 - $14.7 million).
Schedule of other long-term investments The following table presents the components of other long-term investments as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Equity method eligible unconsolidated entities, using the fair value option$66.6 $139.2 
Equity method investments26.1 37.0 
Other unconsolidated investments, at fair value (1)
68.7 90.8 
Other unconsolidated investments, at cost (2)
38.6 43.1 
Total other long-term investments$200.0 $310.1 
(1)Includes other long-term investments that are not equity method eligible and are measured at fair value.
(2)The Company has elected to apply the cost adjusted for market observable events impairment measurement alternative to investments that do not meet the criteria to be accounted for under the equity method, in which the investment is measured at cost and remeasured to fair value when impaired or upon observable transaction prices.
Schedule of investments in related party investment funds
The following table provides the fair value of the Company's investments in related party investment funds as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Third Point Enhanced LP$87.6 $77.5 
Third Point Venture Offshore Fund I LP24.0 25.0 
Third Point Venture Offshore Fund II LP4.9 3.1 
Investments in related party investment funds, at fair value$116.5 $105.6 
v3.25.0.1
Total net investment income and realized and unrealized investment gains (losses) (Tables)
12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Schedule of total realized and unrealized investment gains (losses) and net investment income
Net investment income and net realized and unrealized investment gains (losses) for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Debt securities, available for sale$270.5 $181.6 $35.1 
Debt securities, trading9.2 66.1 (115.6)
Short-term investments10.0 29.3 17.7 
Other long-term investments (72.2)(20.1)(11.0)
Derivative instruments(2.0)4.8 — 
Net realized and unrealized investment gains (losses) from related party investment funds9.7 (1.0)(210.5)
Net investment income and realized and unrealized investment gains (losses) before other investment expenses and investment income (loss) on cash and cash equivalents225.2 260.7 (284.3)
Investment expenses(29.9)(16.1)(20.3)
Net investment income (loss) on cash and cash equivalents29.3 28.1 (18.1)
Total net investment income and realized and unrealized investment gains (losses)$224.6 $272.7 $(322.7)
Schedule of net realized investment gains (losses)
Net realized and unrealized investment losses for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Gross realized gains$25.8 $148.3 $56.2 
Gross realized losses(49.1)(189.0)(132.3)
Net realized gains (losses) on investments(23.3)(40.7)(76.1)
Net unrealized gains (losses) on investments(65.4)30.7 (149.4)
Net realized and unrealized losses on investments (1) (2)$(88.7)$(10.0)$(225.5)
(1)Excludes realized and unrealized gains (losses) on the Company’s investments in related party investment funds and unrealized gains (losses) from available for sale investments, net of tax.
(2)Includes net realized and unrealized gains (losses) of $(60.5) million from related party investments included in other long-term investments for the year ended December 31, 2024 (2023 - $(9.1) million and 2022 - $5.6 million).
Net realized investment losses for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Debt securities, available for sale$(9.6)$(10.0)$2.7 
Debt securities, trading(7.9)(42.0)(66.7)
Short-term investments0.6 (1.4)(2.9)
Derivative instruments(0.8)— — 
Other long-term investments(5.2)8.9 0.6 
Net investment income (loss) on cash and cash equivalents(0.4)3.8 (9.8)
Net realized investment losses$(23.3)$(40.7)$(76.1)
Net realized investment gains (losses) for Other long-term investments for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Hedge funds and private equity funds$4.9 $8.1 $9.2 
Strategic investments(10.6)0.8 (2.5)
Other investments0.5 — (3.8)
Net realized investment gains (losses) on Other long-term investments$(5.2)$8.9 $2.9 
Schedule of net unrealized investment gains (losses)
Net realized and unrealized investment losses for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Gross realized gains$25.8 $148.3 $56.2 
Gross realized losses(49.1)(189.0)(132.3)
Net realized gains (losses) on investments(23.3)(40.7)(76.1)
Net unrealized gains (losses) on investments(65.4)30.7 (149.4)
Net realized and unrealized losses on investments (1) (2)$(88.7)$(10.0)$(225.5)
(1)Excludes realized and unrealized gains (losses) on the Company’s investments in related party investment funds and unrealized gains (losses) from available for sale investments, net of tax.
(2)Includes net realized and unrealized gains (losses) of $(60.5) million from related party investments included in other long-term investments for the year ended December 31, 2024 (2023 - $(9.1) million and 2022 - $5.6 million).
Net unrealized investment gains (losses) for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Debt securities, trading$6.4 $62.3 $(105.0)
Short-term investments(0.5)1.7 (0.3)
Other long-term investments(70.0)(40.4)(23.9)
Derivative instruments(1.2)4.8 — 
Net investment income (loss) on cash and cash equivalents(0.1)2.3 (20.2)
Net unrealized investment gains (losses)$(65.4)$30.7 $(149.4)
Net unrealized investment losses for Other long-term investments for the years ended December 31, 2024, 2023 and 2022 consisted of the following:
202420232022
Hedge funds and private equity funds$10.1 $0.7 $(7.3)
Strategic investments(70.5)(41.0)(8.2)
Other investments(9.6)— (10.2)
Net unrealized investment losses on Other long-term investments$(70.0)$(40.3)$(25.7)
The following table summarizes the amount of total losses included in earnings attributable to unrealized investment losses – Level 3 investments for the years ended December 31, 2024, 2023 and 2022:
202420232022
Debt securities, trading$— $(0.8)$0.7 
Other long-term investments(78.1)(25.2)(15.4)
Total unrealized investment losses – Level 3 investments$(78.1)$(26.0)$(14.7)
v3.25.0.1
Derivatives (Tables)
12 Months Ended
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of derivative instruments
The following table summarizes information on the classification and amount of the fair value of derivatives not designated as hedging instruments within the Company's consolidated balance sheets as of December 31, 2024 and 2023:
December 31, 2024December 31, 2023
Derivatives not designated as hedging instruments
Derivative assets
at fair value(1)
Derivative liabilities
at fair value(2)
Notional
Value
Derivative assets
at fair value(1)
Derivative liabilities
at fair value(2)
Notional
Value
Foreign currency forwards$0.9 $3.3 $768.6 $12.0 $— $585.3 
Foreign currency swaps— — — — — — 
Weather derivatives— 5.6 3.7 0.2 1.0 30.6 
Interest rate swaps— — 29.8 3.4 1.7 62.7 
Credit default swap — 0.5 49.1 0.1 — 30.0 
Reinsurance contracts accounted for as derivatives$— $4.9 $100.1 $— $3.7 $97.4 
(1)Derivative assets are classified within Other assets in the Company's consolidated balance sheets.
(2)Derivative liabilities are classified within Accounts payable, accrued expenses and other liabilities in the Company's consolidated balance sheets.
Schedule of net impact on earnings relating to derivatives
The following table summarizes information on the classification and net impact on earnings, recognized in the Company's consolidated statements of income (loss) relating to derivatives during the years ended December 31, 2024, 2023 and 2022:
Derivatives not designated as hedging instrumentsClassification of gains (losses) recognized in earnings202420232022
Foreign currency futures contractsForeign exchange (gains) losses$— $— $(32.1)
Foreign currency forwardsForeign exchange (gains) losses50.4 0.8 (8.1)
Weather derivativesOther revenues1.2 2.6 7.3 
Equity warrantsNet realized and unrealized investment losses— — (0.1)
Foreign currency swapsForeign exchange (gains) losses— (3.8)1.5 
Interest rate swapsNet realized and unrealized investment losses2.0 4.8 — 
Credit default swap Net realized and unrealized investment losses— 0.1 — 
Reinsurance contracts accounted for as derivatives
Other revenues$0.3 $— $— 
v3.25.0.1
Variable and voting interest entities (Tables)
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Reconciliation of noncontrolling interests The following table is a reconciliation of the beginning and ending carrying amount of noncontrolling interests for the years ended December 31, 2024 and 2023:
20242023
Balance, beginning of period$16.7 $7.9 
Net income attributable to noncontrolling interests2.5 8.9 
Contributions (redemptions)(0.3)0.8 
Derecognition of noncontrolling interest (1)
(17.5)(0.9)
Balance, end of period$1.4 $16.7 
(1)See above for additional information on the derecognition of noncontrolling interests in Arcadian and Banyan.
Schedule of information related to unconsolidated variable interest entities
The following table presents total assets of unconsolidated VIEs in which the Company holds a variable interest, as well as the maximum exposure to loss associated with these VIEs as of December 31, 2024 and December 31, 2023:
December 31, 2024December 31, 2023
Carrying Amount
Maximum Exposure to Loss (1)
Carrying Amount
Maximum Exposure to Loss (1)
Debt securities, available for sale$21.1 $79.3 $— $— 
Other long-term investments (2)122.6 158.1 126.2 131.9 
$143.7 $237.4 $126.2 $131.9 
(1)Maximum exposure to loss is equal to the carrying amounts plus any unfunded commitments.
(2)Excludes the Company’s investments in Related Party Investment Funds which are also VIEs and are discussed separately below.
v3.25.0.1
Loss and loss adjustment expense reserves (Tables)
12 Months Ended
Dec. 31, 2024
Insurance [Abstract]  
Schedule of loss and loss adjustment expense reserves
As of December 31, 2024 and 2023, loss and loss adjustment expense reserves in the consolidated balance sheets was comprised of the following:
December 31,
2024
December 31,
2023
Case loss and loss adjustment expense reserves$1,856.0 $2,042.5 
Incurred but not reported loss and loss adjustment expense reserves3,732.9 3,509.7 
Unallocated loss adjustment expense reserves65.0 55.9 
$5,653.9 $5,608.1 
The following table represents the activity in the loss and loss adjustment expense reserves for the years ended December 31, 2024, 2023 and 2022:
202420232022
Gross reserves for loss and loss adjustment expenses, beginning of year$5,608.1 $5,268.7 $4,841.4 
Less: loss and loss adjustment expenses recoverable, beginning of year(2,295.1)(1,376.2)(1,215.3)
Less: deferred gains (charges) on retroactive reinsurance contracts27.5 (1.0)(1.4)
Net reserves for loss and loss adjustment expenses, beginning of year3,340.5 3,891.5 3,624.7 
Net reserves for loss and loss adjustment expenses transferred(1)
(291.4)(758.3)— 
Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
     Current year1,476.4 1,555.5 1,609.7 
     Prior years (107.9)(174.2)(21.3)
Total incurred loss and loss adjustment expenses1,368.5 1,381.3 1,588.4 
Net loss and loss adjustment expenses paid in respect of losses occurring in:
     Current year(324.3)(347.4)(316.1)
     Prior years(710.9)(837.3)(939.2)
Total net paid losses(1,035.2)(1,184.7)(1,255.3)
Foreign currency translation(35.3)10.7 (66.3)
Net reserves for loss and loss adjustment expenses, end of year3,347.1 3,340.5 3,891.5 
Plus: loss and loss adjustment expenses recoverable, end of year2,315.3 2,295.1 1,376.2 
Plus: deferred (gains) charges on retroactive reinsurance contracts (2)
(8.5)(27.5)1.0 
Gross reserves for loss and loss adjustment expenses, end of year$5,653.9 $5,608.1 $5,268.7 
(1)Net reserves for loss and loss adjustment expenses transferred represents the transfer of reserves under the 2024 LPT and 2023 LPT.
(2)Deferred charges on retroactive reinsurance are recorded in other assets on the Company’s consolidated balance sheets. Deferred gains on retroactive reinsurance are presented as a separate line item on the Company’s consolidated balance sheets.
Schedule of total loss and loss adjustment expenses incurred, net and net loss and loss adjustment expenses paid by accident year by line of business
The following tables provide a breakdown of the Company’s loss and allocated loss adjustment expenses incurred, net and net loss and allocated loss adjustment expenses paid by accident year by line of business for the Company’s Reinsurance segment for the year ended December 31, 2024. The information related to loss and allocated loss adjustment expenses incurred, net and net loss and allocated loss adjustment expenses paid for the years ended December 31, 2015 through 2023 is presented as supplementary information and is unaudited:
Casualty
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$126.7 $133.7 $131.4 $130.5 $129.0 $128.3 $127.7 $127.1 $127.0 $126.9 $0.9 
2016— 124.7 130.0 128.9 123.7 122.2 121.8 120.3 119.9 119.6 0.7 
2017— — 102.7 104.3 101.4 99.7 101.0 100.3 100.7 101.7 4.8 
2018— — — 140.1 143.7 146.3 151.8 153.8 162.3 165.9 17.7 
2019— — — — 178.3 179.7 191.6 196.6 205.6 211.3 35.7 
2020— — — — — 171.3 185.7 194.8 194.7 189.1 44.5 
2021— — — — — — 144.2 143.3 141.6 139.4 36.2 
2022— — — — — — — 291.2 298.3 287.4 138.2 
2023— — — — — — — — 353.3 349.7 182.2 
2024— — — — — — — — — 298.3 258.5 
Total$1,989.3 $719.4 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$45.3 $92.9 $106.3 $115.5 $119.5 $121.5 $123.2 $123.9 $124.4 $124.9 
2016— 42.3 91.8 103.4 110.4 113.3 115.7 116.4 117.0 117.6 
2017— — 28.2 57.7 67.4 75.6 80.9 85.3 88.8 91.5 
2018— — — 25.8 54.8 72.5 94.4 110.3 123.6 134.3 
2019— — — — 22.7 52.4 75.7 104.4 131.1 154.1 
2020— — — — — 19.7 44.2 75.0 102.9 124.1 
2021— — — — — — 16.5 44.2 65.5 84.2 
2022— — — — — — — 20.8 51.2 100.8 
2023— — — — — — — — 30.6 90.3 
2024— — — — — — — — — 16.3 
Total$1,038.1 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024
951.2 
Net reserves for loss and allocated loss adjustment expenses prior to 2015
2.4 
Casualty - net reserves for loss and allocated loss adjustment expenses, end of year$953.6 
Specialty
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$89.9 $110.7 $107.3 $104.9 $103.5 $102.8 $102.7 $102.8 $102.8 $102.6 $0.6 
2016— 123.4 121.0 115.3 110.6 110.5 110.1 108.9 108.9 108.3 1.0 
2017— — 117.1 122.5 116.8 117.0 115.8 113.9 113.4 112.4 3.9 
2018— — — 92.7 91.5 92.8 89.7 88.0 83.7 81.9 2.3 
2019— — — — 88.4 88.0 90.5 85.3 84.3 82.1 4.5 
2020— — — — — 102.0 98.9 94.6 94.6 84.9 10.8 
2021— — — — — — 66.1 60.5 59.2 53.0 10.6 
2022— — — — — — — 84.9 84.3 82.3 33.1 
2023— — — — — — — — 152.5 144.6 58.5 
2024— — — — — — — — — 191.6 127.2 
Total$1,043.7 $252.5 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$36.2 $72.5 $93.9 $97.6 $99.7 $100.2 $100.1 $100.6 $101.4 $101.3 
2016— 28.9 87.9 98.7 103.3 105.2 104.4 105.4 106.3 106.5 
2017— — 57.2 85.6 96.5 100.6 101.5 104.5 105.7 106.4 
2018— — — 36.4 54.4 69.9 70.7 69.9 69.0 69.5 
2019— — — — 25.6 46.2 61.0 65.5 68.4 70.9 
2020— — — — — 28.7 41.1 54.6 59.5 62.2 
2021— — — — — — 13.6 23.5 29.5 31.3 
2022— — — — — — — 8.7 18.6 32.8 
2023— — — — — — — — 20.5 50.8 
2024— — — — — — — — — 31.2 
Total$662.9 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024380.8 
Net reserves for loss and allocated loss adjustment expenses prior to 2015(2.2)
Specialty - net reserves for loss and allocated loss adjustment expenses, end of year$378.6 
Property Other
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$105.0 $114.7 $117.7 $120.0 $119.7 $119.1 $119.9 $119.8 $119.6 $119.6 $0.1 
2016— 126.2 132.3 136.0 136.6 135.9 136.3 136.1 135.5 135.8 0.2 
2017— — 227.6 258.1 270.8 273.8 275.5 273.0 271.6 266.8 0.4 
2018— — — 209.7 243.9 251.1 248.4 246.2 243.5 239.0 4.9 
2019— — — — 180.4 184.8 185.4 182.4 184.2 182.6 3.6 
2020— — — — — 132.8 145.0 143.7 144.3 138.4 12.5 
2021— — — — — — 62.3 63.9 70.4 68.4 20.0 
2022— — — — — — — 59.2 59.2 58.8 2.6 
2023— — — — — — — — 63.3 66.6 12.6 
2024— — — — — — — — — 69.2 45.8 
Total$1,345.2 $102.7 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$43.7 $96.3 $104.6 $111.9 $115.9 $117.1 $118.4 $119.0 $119.2 $119.3 
2016— 32.4 92.3 116.3 146.0 130.0 132.3 133.6 134.2 134.8 
2017— — 49.4 162.9 206.5 235.6 242.7 254.4 258.2 262.9 
2018— — — 55.9 147.3 194.4 208.6 221.0 226.8 230.1 
2019— — — — 46.6 121.5 148.2 163.1 171.3 176.4 
2020— — — — — 40.6 87.1 107.4 114.1 117.5 
2021— — — — — — 22.9 38.7 42.6 45.0 
2022— — — — — — — 9.7 31.5 53.0 
2023— — — — — — — — 12.7 50.3 
2024— — — — — — — — — 20.0 
Total$1,209.3 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024135.9 
Net reserves for loss and allocated loss adjustment expenses prior to 20150.7 
Property Other - net reserves for loss and allocated loss adjustment expenses, end of year$136.6 
Property Catastrophe
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — 27.6 32.6 26.4 27.2 28.2 28.5 26.8 25.2 1.0 
2018— — — 12.0 5.3 5.7 4.8 4.5 4.1 4.2 1.2 
2019— — — — 37.9 38.6 41.9 39.6 36.0 36.0 4.1 
2020— — — — — 58.1 69.6 63.0 68.1 56.9 11.8 
2021— — — — — — 67.7 69.4 57.0 55.5 8.2 
2022— — — — — — — 84.4 76.3 70.2 27.9 
2023— — — — — — — — 22.4 22.6 11.0 
2024— — — — — — — — — 70.4 62.5 
Total$341.0 $127.7 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — 1.3 7.8 12.0 20.4 20.6 22.0 22.9 23.6 
2018— — — 0.4 1.7 2.2 2.7 2.9 2.9 2.9 
2019— — — — 0.5 14.3 23.4 26.3 27.6 28.5 
2020— — — — — 7.4 25.5 36.4 41.5 42.8 
2021— — — — — — 16.1 29.1 32.9 42.6 
2022— — — — — — — 7.4 23.2 35.5 
2023— — — — — — — — 1.2 4.5 
2024— — — — — — — — — 7.5 
Total$187.9 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024153.1 
Net reserves for loss and allocated loss adjustment expenses prior to 20150.1 
Property Catastrophe - net reserves for loss and allocated loss adjustment expenses, end of year$153.2 
Other
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 — 
2018— — — 2.6 3.0 3.0 3.0 3.1 3.1 3.1 — 
2019— — — — 3.4 3.6 2.5 2.7 2.8 2.8 — 
2020— — — — — 3.1 1.1 1.4 1.4 1.3 — 
2021— — — — — — 0.2 0.1 0.1 0.1 — 
2022— — — — — — — — — — — 
2023— — — — — — — — — — — 
2024— — — — — — — — — — — 
Total$8.1 $— 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — 0.3 0.6 0.8 0.8 0.8 0.8 0.8 
2018— — — 1.0 2.1 3.0 3.0 3.1 3.1 3.1 
2019— — — — 1.6 2.6 2.5 2.6 2.8 2.8 
2020— — — — — 0.5 0.9 1.0 1.3 1.3 
2021— — — — — — — 0.1 0.1 0.1 
2022— — — — — — — — — — 
2023— — — — — — — — — — 
2024— — — — — — — — — — 
Total$8.1 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024— 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Other - net reserves for loss and allocated loss adjustment expenses, end of year$— 
Insurance & Services
The following tables provide a breakdown of the Company’s loss and allocated loss adjustment expenses incurred, net and net loss and allocated loss adjustment expenses paid by accident year by line of business for the Company’s Insurance & Services segment for the year ended December 31, 2024. The information related to loss and allocated loss adjustment
expenses incurred, net and net loss and allocated loss adjustment expenses paid for the years ended December 31, 2015 through 2023 is presented as supplementary information and is unaudited:
A&H
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$79.7 $82.6 $81.7 $80.7 $80.7 $80.7 $80.7 $80.7 $80.7 $80.7 $— 
2016— 85.3 88.0 84.4 83.2 83.2 82.8 82.9 82.8 82.9 — 
2017— — 94.3 88.4 82.2 80.5 80.5 80.8 81.0 81.1 — 
2018— — — 100.0 99.8 98.7 97.7 97.7 97.8 97.8 — 
2019— — — — 149.9 147.5 142.6 142.1 141.2 141.0 — 
2020— — — — — 147.5 146.0 139.6 136.0 136.2 0.1 
2021— — — — — — 142.5 135.3 127.2 126.6 2.3 
2022— — — — — — — 278.9 264.5 247.2 10.1 
2023— — — — — — — — 404.8 392.1 43.0 
2024— — — — — — — — — 414.0 190.7 
Total$1,799.6 $246.2 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$37.3 $73.3 $80.0 $80.5 $80.6 $80.6 $80.6 $80.6 $80.5 $80.7 
2016— 50.2 78.0 81.9 82.4 82.5 82.2 82.2 82.1 82.9 
2017— — 58.8 75.3 80.7 80.8 81.1 81.2 81.3 81.1 
2018— — — 66.9 89.8 98.1 98.3 98.4 98.3 97.9 
2019— — — — 99.4 134.0 139.7 140.5 140.6 141.0 
2020— — — — — 81.2 125.2 133.3 133.5 136.3 
2021— — — — — — 85.0 117.2 123.5 124.3 
2022— — — — — — — 139.0 216.6 234.6 
2023— — — — — — — — 205.6 333.0 
2024— — — — — — — — — 201.4 
Total$1,513.2 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024286.4 
Net reserves for loss and allocated loss adjustment expenses prior to 20150.1 
A&H - net reserves for loss and allocated loss adjustment expenses, end of year$286.5 
Casualty
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — — — — — — — — — — 
2018— — — — — — — — — — — 
2019— — — — — — — — — — — 
2020— — — — — 1.0 0.8 0.9 0.7 1.0 0.1 
2021— — — — — — 51.4 51.4 55.5 48.8 26.4 
2022— — — — — — — 139.9 131.9 127.6 97.8 
2023— — — — — — — — 198.8 199.1 152.6 
2024— — — — — — — — — 254.1 226.4 
Total$630.6 $503.3 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — — — — — — — — 
2018— — — — — — — — — — 
2019— — — — — — — — — — 
2020— — — — — — 0.3 0.4 0.4 0.9 
2021— — — — — — 0.8 6.9 10.9 19.4 
2022— — — — — — — 4.7 3.2 15.0 
2023— — — — — — — — 8.9 38.2 
2024— — — — — — — — — 15.3 
Total$88.8 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024541.8 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Casualty - net reserves for loss and allocated loss adjustment expenses, end of year$541.8 
Specialty
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — — — — — — — — — — 
2018— — — — — — — — — — — 
2019— — — — — — — — — — — 
2020— — — — — — — — — — — 
2021— — — — — — 7.1 9.0 10.0 9.7 1.0 
2022— — — — — — — 21.0 22.1 22.9 7.8 
2023— — — — — — — — 29.3 43.6 36.6 
2024— — — — — — — — — 28.4 22.4 
Total$104.6 $67.8 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — — — — — — — — 
2018— — — — — — — — — — 
2019— — — — — — — — — — 
2020— — — — — — — — — — 
2021— — — — — — 0.7 6.3 8.4 8.6 
2022— — — — — — — 7.5 13.6 15.0 
2023— — — — — — — — 3.1 5.3 
2024— — — — — — — — — 3.1 
Total$32.0 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 202472.6 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Specialty - net reserves for loss and allocated loss adjustment expenses, end of year$72.6 
Property Other
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — — — — — — — — — — 
2018— — — — — — — — — — — 
2019— — — — — — — — — — — 
2020— — — — — 1.6 1.4 1.4 0.7 0.7 0.1 
2021— — — — — — 4.1 2.7 2.8 2.6 1.3 
2022— — — — — — — 10.3 11.5 10.1 1.7 
2023— — — — — — — — 19.8 20.0 7.2 
2024— — — — — — — — — 39.7 29.3 
Total$73.1 $39.6 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — — — — — — — — 
2018— — — — — — — — — — 
2019— — — — — — — — — — 
2020— — — — — 0.4 0.5 0.5 0.6 0.6 
2021— — — — — — 0.5 1.0 1.1 1.4 
2022— — — — — — — 1.5 5.8 7.4 
2023— — — — — — — — 1.6 6.4 
2024— — — — — — — — — 3.8 
Total$19.6 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 202453.5 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Property Other - net reserves for loss and allocated loss adjustment expenses, end of year$53.5 
Property Catastrophe
Loss and allocated loss adjustment expenses incurred, net
Accident year 2015201620172018201920202021202220232024IBNR loss and ALAE reserves, net
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — — 
2017— — — — — — — — — — — 
2018— — — — — — — — — — — 
2019— — — — — — — — — — — 
2020— — — — — — — — — — — 
2021— — — — — — — — — — — 
2022— — — — — — — 1.7 1.8 1.8 0.8 
2023— — — — — — — — 0.1 0.1 0.1 
2024— — — — — — — — — 0.1 0.1 
Total$2.0 $1.0 
Cumulative net losses and allocated loss adjustment expenses paid
Accident year 2015201620172018201920202021202220232024
<--------------------------------------------------- Unaudited --------------------------------------------------->
2015$— $— $— $— $— $— $— $— $— $— 
2016— — — — — — — — — — 
2017— — — — — — — — — — 
2018— — — — — — — — — — 
2019— — — — — — — — — — 
2020— — — — — — — — — — 
2021— — — — — — — — — — 
2022— — — — — — — — 0.3 0.9 
2023— — — — — — — — — — 
2024— — — — — — — — — — 
Total$0.9 
Net reserves for loss and allocated loss adjustment expenses from 2015 to 20241.1 
Net reserves for loss and allocated loss adjustment expenses prior to 2015— 
Property Catastrophe - net reserves for loss and allocated loss adjustment expenses, end of year
$1.1 
Reconciliation of loss and loss expense reserves
The following table provides a reconciliation of the Company's loss and loss adjustment expense reserves as of December 31, 2024:
December 31,
2024
Net reserves for loss and allocated loss adjustment expenses
Reinsurance
Casualty$953.6 
Specialty378.6 
Property Other136.6 
Property Catastrophe153.2 
Insurance & Services
A&H286.5 
Casualty541.8 
Specialty72.6 
Property Other53.5 
Property Catastrophe1.1 
Corporate (1)
644.5 
Net reserves for loss and allocated loss adjustment expenses, end of year3,222.0 
Loss and allocated loss adjustment expenses recoverable
Reinsurance
Casualty179.8 
Specialty214.8 
Property Other72.1 
Property Catastrophe46.8 
Insurance & Services
A&H63.3 
Casualty336.3 
Specialty102.7 
Property Other34.0 
Property Catastrophe0.5 
Corporate (1)
1,265.0 
Total loss and allocated loss adjustment expenses recoverable2,315.3 
Unallocated loss adjustment expense reserves65.0 
Other items, net (2)
60.1 
Deferred gains on retroactive reinsurance contracts(8.5)
Gross reserves for loss and loss adjustment expenses, end of year$5,653.9 
(1)Corporate includes the results of all runoff business and is not presented in the loss development tables.
(2)Includes fair value adjustments associated with the acquisition of Sirius Group.
Schedule of historical average annual percentage payout on loss adjustment expenses incurred, net by age
The following table is presented as supplementary information and presents the Company’s historical average annual percentage payout of loss and loss adjustment expenses incurred, net by age, as of December 31, 2024:
Year 1Year 2Year 3Year 4Year 5Year 6Year 7Year 8Year 9Year 10
(Unaudited)
Reinsurance
Casualty13.5 %19.4 %13.2 %11.5 %8.3 %6.2 %3.2 %1.1 %0.5 %0.4 %
Specialty27.5 %26.4 %15.1 %3.9 %1.7 %0.9 %0.7 %0.7 %0.5 %— %
Property Other24.8 %40.3 %16.1 %9.1 %1.8 %2.8 %1.3 %1.1 %0.3 %— %
Property Catastrophe12.3 %26.5 %16.5 %15.0 %2.3 %3.7 %3.1 %2.9 %— %— %
Other38.2 %34.2 %15.9 %7.6 %2.6 %1.1 %0.8 %0.8 %— %— %
Insurance & Services
A&H56.9 %30.2 %6.3 %0.4 %0.6 %0.1 %(0.1)%(0.1)%0.4 %0.2 %
Casualty4.7 %9.1 %8.9 %17.0 %44.9 %71.5 %— %— %— %— %
Specialty13.8 %18.1 %11.2 %1.3 %— %— %— %— %— %— %
Property Other10.7 %29.1 %13.3 %9.4 %0.1 %— %— %— %— %— %
Property Catastrophe(1.9)%21.3 %29.5 %— %— %— %— %— %— %— %
v3.25.0.1
Third party reinsurance (Tables)
12 Months Ended
Dec. 31, 2024
Insurance [Abstract]  
Schedule of premiums net premiums written and earned
The following tables provide a breakdown of the Company’s written and earned premiums and loss and loss adjustment expenses from direct business, reinsurance assumed and reinsurance ceded for the years ended December 31, 2024, 2023 and 2022:
202420232022
Premiums written:
Direct$1,824.3 $1,678.7 $1,403.9 
Assumed1,420.3 1,748.7 2,005.8 
Gross premiums written3,244.6 3,427.4 3,409.7 
Ceded(892.5)(989.5)(860.5)
Net premiums written$2,352.1 $2,437.9 $2,549.2 
202420232022
Premiums earned:
Direct$1,721.5 $1,498.0 $1,153.6 
Assumed1,357.0 1,826.0 1,915.2 
Gross premiums earned3,078.5 3,324.0 3,068.8 
Ceded(735.0)(897.8)(750.7)
Net premiums earned$2,343.5 $2,426.2 $2,318.1 
202420232022
Loss and loss adjustment expense:
Direct$1,070.7 $1,008.6 $778.0 
Assumed961.5 910.5 1,386.8 
Loss and loss adjustment expense incurred2,032.2 1,919.1 2,164.8 
Ceded(663.7)(537.8)(576.4)
Loss and loss adjustment expense incurred, net$1,368.5 $1,381.3 $1,588.4 
Schedule of ceded credit risk
The following tables provide a listing of the Company’s loss and loss adjustment expenses recoverable by the reinsurer's S&P rating and the percentage of total recoverables as of December 31, 2024 and 2023. With certain reinsurers, if S&P's rating was not available, an equivalent AM Best or other major credit agency’s rating was used.
 December 31, 2024
Rating (1) (2)
GrossCollateralNet% of Net
Total
AA$195.0 $21.8 $173.2 17.9 %
A722.7 87.8 634.9 65.5 %
BBB or lower30.6 23.0 7.6 0.8 %
Not rated1,367.0 1,213.7 153.3 15.8 %
Total$2,315.3 $1,346.3 $969.0 100.0 %
December 31, 2023
Rating (1) (2)
GrossCollateralNet% of Net
Total
AA$294.5 $76.9 $217.6 24.4 %
A601.9 111.2 490.7 55.1 %
BBB or lower202.0 76.6 125.4 14.1 %
Not rated1,196.7 1,140.1 56.6 6.4 %
Total$2,295.1 $1,404.8 $890.3 100.0 %
(1) S&P’s ratings as detailed above are: "AAA" (Extremely Strong), "AA" (Very strong), "A" (Strong) and "BBB" (Adequate).
(2) Not rated represents reinsurers who are not rated by S&P, AM Best, or another major rating agency. Included in the “Not rated” category as of December 31, 2024 is $907.4 million related to Pallas Reinsurance Ltd. as a result of the 2023 LPT and the loss portfolio transfer completed on October 29, 2021 (the “2021 LPT”) and $291.4 million related to Clarendon National as a result of the 2024 LPT (2023 - $1,090.2 million related to Pallas Reinsurance Ltd. as a result of the 2023 LPT and 2021 LPT).
The following tables provide a listing of the five highest loss and loss adjustment expenses recoverable by reinsurer, along with percentage of total recoverable amount, the reinsurer's reinsurer rating by S&P, AM Best, or other major rating agencies and the percentage that the recoverable is collateralized as of December 31, 2024 and 2023:
 December 31, 2024
Balance% of TotalRating% Collateralized
Reinsurer:  
Pallas Reinsurance Company Ltd.$907.4 39.2 %Not rated89.9 %
Clarendon National Insurance Company
291.4 12.6 %Not rated102.0 %
Arch Reinsurance Ltd218.9 9.5 %A+— %
General Insurance Corporation of India153.8 6.6 %A-22.4 %
Allianz SE$74.4 3.2 %AA-17.3 %
December 31, 2023
Balance% of TotalRating% Collateralized
Reinsurer:
Pallas Reinsurance Company Ltd.$1,090.2 47.5 %Not rated96.5 %
Arch Reinsurance Ltd169.3 7.4 %A+1.0 %
General Insurance Corporation of India164.1 7.2 %BBB27.4 %
Pie Casualty Insurance Company98.0 4.3 %A-15.4 %
Allianz SE$94.4 4.1 %AA-54.0 %
v3.25.0.1
Allowance for expected credit losses (Tables)
12 Months Ended
Dec. 31, 2024
Receivables [Abstract]  
Schedule of assets in scope of the current expected credit losses assessment
The Company's assets in scope of the current expected credit loss assessment as of December 31, 2024 and 2023 are as follows:
December 31,
2024
December 31,
2023
Insurance and reinsurance balances receivable, net (1)
$2,054.4 $1,966.3 
Loss and loss adjustment expenses recoverable, net2,315.3 2,295.1 
Other assets (2)
87.8 76.8 
Total assets in scope$4,457.5 $4,338.2 
(1)As of December 31, 2024, no individual counterparty’s insurance and reinsurance balances receivable exceeded 10% of the Company’s total insurance and reinsurance balances receivable (December 31, 2023 - $234.7 million from one counterparty).
(2)Relates to MGA trade receivables (included in other assets in the Company’s consolidated balance sheets), loans receivables (included in other long-term investments in the Company’s consolidated balance sheets) and interest and dividend receivables.
v3.25.0.1
Debt and letter of credit facilities (Tables)
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of debt obligations
The following table represents a summary of the Company’s debt obligations on its consolidated balance sheets as of December 31, 2024 and December 31, 2023:
December 31, 2024December 31, 2023
Amount
Effective rate (1)
Amount
Effective rate (1)
2024 Senior Notes, at face value$400.0 7.4 %n/an/a
Unamortized discount and issuance costs(5.2)n/a
2024 Senior Notes, carrying value394.8 n/a
2017 SEK Subordinated Notes, at face value249.2 7.9 %$273.6 7.7 %
Unamortized discount(4.9)(5.7)
2017 SEK Subordinated Notes, carrying value244.3 267.9 
2016 Senior Notes, at face value— — %400.0 4.6 %
Unamortized premium— 3.5 
2016 Senior Notes, carrying value
— 403.5 
2015 Senior Notes, at face value— — %115.0 7.0 %
Unamortized issuance costs— (0.2)
2015 Senior Notes, carrying value— 114.8 
Total debt$639.1 $786.2 
(1)Effective rate considers the effect of the debt issuance costs, discount, and premium.
Schedule of letter of credit facilities
As of December 31, 2024, the Company had entered into the following letter of credit facilities:
Letters of CreditCollateral
Committed CapacityIssuedCash and Cash EquivalentsDebt securities
Committed - Secured letters of credit facilities$355.0 $267.1 $17.7 $232.9 
Uncommitted - Secured letters of credit facilities— 904.6 18.8 1,033.9 
$1,171.7 $36.5 $1,266.8 
v3.25.0.1
Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of identifiable intangible assets
The Company’s intangible assets consisted of the following and are included in Intangible assets on the Company’s consolidated balance sheets as of December 31, 2024 and 2023:
Economic Useful LifeGross balance at February 26, 2021Accumulated amortization and dispositionsNet balance at December 31, 2024
Distribution relationships17 years$75.0 $(13.9)$61.1 
MGA relationships13 years34.0 (16.9)17.1 
Lloyd’s Capacity - Syndicate 1945Indefinite41.8 — 41.8 
Insurance licensesIndefinite7.0 (1.0)6.0 
Trade name16 years16.0 (2.4)13.6 
Internally developed computer software5 years5.0 (3.8)1.2 
Identifiable intangible assets (1)
$178.8 $(38.0)$140.8 
Economic Useful LifeGross balance at February 26, 2021Accumulated amortization and dispositionsNet balance at December 31, 2023
Distribution relationships17 years$75.0 $(7.4)$67.6 
MGA relationships13 years34.0 (13.4)20.6 
Lloyd’s Capacity - Syndicate 1945Indefinite41.8 — 41.8 
Insurance licensesIndefinite7.0 (1.0)6.0 
Trade name16 years16.0 (1.5)14.5 
Internally developed computer software5 years5.0 (2.8)2.2 
Identifiable intangible assets (1)
$178.8 $(26.1)$152.7 
(1)No impairments were recorded in the years ended December 31, 2024 and 2023.
Schedule of estimated remaining amortization expense for intangible assets with finite lives
The estimated remaining amortization expense for the Company's intangible assets with finite lives is as follows:
2025$11.4 
20269.9
20279.1
20288.5
2029 and thereafter54.1
Total remaining amortization expense $93.0 
v3.25.0.1
Income taxes (Tables)
12 Months Ended
Dec. 31, 2024
Income Tax Disclosure [Abstract]  
Schedule of income before income tax by jurisdiction
The following is a summary of the Company’s income (loss) before income tax (expense) benefit by jurisdiction for the years ended December 31, 2024, 2023 and 2022:
202420232022
Bermuda$53.7 $21.5 $(151.7)
U.S.89.6 98.6 (47.0)
U.K.4.1 2.7 (9.7)
Sweden86.1 156.7 (174.6)
Luxembourg0.1 38.1 (37.2)
Other(0.5)1.1 (2.5)
Income (loss) before income tax (expense) benefit$233.1 $318.7 $(422.7)
Schedule of components of income tax expense
For the years ended December 31, 2024, 2023 and 2022, income tax (expense) benefit consisted of the following:
202420232022
Current tax (expense) benefit:
U.S. Federal$(6.1)$(17.0)$1.6 
State(1.1)(1.4)(0.9)
Non-U.S.(12.6)(13.9)(3.2)
Total current tax expense(19.8)(32.3)(2.5)
Deferred tax (expense) benefit:
U.S. Federal(15.4)(3.7)20.7 
State(1.3)(0.3)2.0 
Non-U.S.5.8 81.3 16.5 
Total deferred tax (expense) benefit(10.9)77.3 39.2 
Total income tax (expense) benefit$(30.7)$45.0 $36.7 
Schedule of effective rate reconciliation
The following table presents a reconciliation of expected income taxes to income tax (expense) benefit for the years ended December 31, 2024, 2023 and 2022:
202420232022
Tax (expense) benefit at the 0% Bermuda statutory rate$— $— $— 
Differences in taxes resulting from:
Bermuda Tax Law28.7 100.8 — 
Non-Bermuda earnings(39.9)(73.1)52.9 
Foreign currency effects(9.1)9.1 (10.7)
Non-Taxable/Deductible Income— 7.6 (1.4)
Change in Valuation Allowance8.9 (4.7)(14.3)
Tax on Safety Reserve(3.1)(2.3)(2.4)
Change in uncertain tax position1.4 — 8.0 
Tax rate change(8.4)— 2.7 
State taxes expense(0.9)(1.4)(0.7)
Provision-to-return true up(3.9)11.2 3.9 
Non-Deductible expenses(1.9)(0.6)— 
Foreign Branches(1.4)(1.3)— 
Other, net(1.1)(0.3)(1.3)
Total income tax (expense) benefit$(30.7)$45.0 $36.7 
Schedule of deferred tax assets and liabilities
The following table presents the tax effects of temporary differences that give rise to the deferred tax assets and deferred tax liabilities as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Deferred tax assets:
Non-U.S. net operating loss carryforwards$308.1 $309.6 
Purchase accounting— 2.4 
Tax credit carryforwards23.0 30.5 
Unearned premiums20.0 21.7 
U.S. federal net operating loss and capital carryforwards3.0 11.8 
Discounting of loss and loss adjustment expense reserves18.1 17.5 
Intangible assets84.8 57.0 
Unrealized losses on investments6.6 8.5 
Investment basis differences0.5 7.5 
Foreign currency translation on investments1.5 5.2 
Incentive compensation and benefit accruals3.9 4.3 
Deferred interest3.2 4.2 
Allowance for doubtful accounts4.0 3.7 
Other items7.0 13.3 
Total gross deferred tax assets483.7 497.2 
Valuation allowance(100.1)(112.4)
Total adjusted deferred tax asset$383.6 $384.8 
Deferred tax liabilities:
Safety reserve$111.0 $129.1 
Deferred acquisition costs19.7 23.3 
Purchase accounting27.9 — 
Other Items4.2 7.5 
Total deferred tax liabilities162.8 159.9 
Net deferred tax assets $220.8 $224.9 
Schedule of operating loss and capital loss carryforwards
Net operating loss and capital loss carryforwards as of December 31, 2024, the expiration dates and the deferred tax assets thereon are as follows:
December 31, 2024
United StatesLuxembourgSwedenU.K.GermanyBermudaTotal
2030-2044$9.2 $72.6 $— $— $— $— $81.8 
No expiration date10.5 688.5 104.6 115.7 2.3 500.6 1,422.2 
Total$19.7 $761.1 $104.6 $115.7 $2.3 $500.6 $1,504.0 
Gross deferred tax asset$3.0 $181.7 $21.6 $29.0 $0.7 $75.1 $311.1 
Valuation allowance— (66.5)— (29.0)(0.7)— (96.2)
Net deferred tax asset$3.0 $115.2 $21.6 $— $— $75.1 $214.9 
Reconciliation of unrecognized tax benefits
The following table is a reconciliation of the beginning and ending unrecognized tax benefits for the years ended December 31, 2024 and 2023:
Permanent
differences (1)
Temporary
differences (2)
Interest and
penalties (3)
Total
Balance as of January 1, 2023$1.6 $— $0.7 $2.3 
Balance as of December 31, 20231.6 — 0.7 2.3 
Lapse in statute of limitations(0.8)— (0.6)(1.4)
Balance as of December 31, 2024$0.8 $— $0.1 $0.9 
(1)Represents the amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate.
(2)Represents the amount of unrecognized tax benefits that, if recognized, would create a temporary difference between the reported amount of an item in the consolidated balance sheets and its tax basis.
(3)Net of tax benefit.
v3.25.0.1
Shareholders' equity (Tables)
12 Months Ended
Dec. 31, 2024
Equity [Abstract]  
Schedule of common shares issued and outstanding
The following table presents a summary of the common shares issued and outstanding and shares repurchased as of and for the years ended December 31, 2024, 2023 and 2022:
202420232022
Common shares issued and outstanding, beginning of year168,120,022 162,177,653 161,929,777 
Issuance of common shares, net of forfeitures and shares withheld1,072,261 1,531,040 942,923 
Shares repurchased (1)(54,798,437)— (695,047)
Issuance of common shares upon exercise of options2,035,211 385,430 — 
Issuance of common shares upon exercise of warrants— 4,025,899 — 
Common shares issued and outstanding, end of year116,429,057 168,120,022 162,177,653 
(1) For further details on the repurchase during the year ended December 31, 2024, see discussion on the repurchases from CM Bermuda in Note 3 “Significant transactions”.
v3.25.0.1
Share-based compensation and employee benefit plans (Tables)
12 Months Ended
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of RSU activity
RSU activity for the year ended December 31, 2024 was as follows:
Number of non-
vested restricted
shares
Weighted
average grant
date fair value
Balance as of January 1, 20242,871,686 $7.90 
Granted618,166 12.28 
Forfeited(161,795)12.93 
Vested(1,548,637)7.89 
Balance as of December 31, 20241,779,420 $9.33 
Schedule of restricted share award activity
Restricted share award activity for the year ended December 31, 2024 was as follows:
Number of non-
vested restricted
shares
Weighted
average grant
date fair value
Balance as of January 1, 2024649,527 $7.63 
Granted73,696 13.05 
Vested(590,516)7.69 
Balance as of December 31, 2024132,707 $10.38 
Schedule of performance share units
PSU activity for the year ended December 31, 2024 was as follows:
Number of non-
vested PSUs
Number of non-
vested PSUs probable of vesting
Weighted average grant date fair value of PSUs probable of vesting
Balance as of January 1, 20241,990,467 1,990,467 $9.61 
Granted1,214,331 1,214,331 11.99 
Forfeited(334,466)(334,466)10.34 
Vested(269,904)(269,904)9.76 
Balance as of December 31, 20242,600,428 2,600,428 $10.61 
Schedule of valuation assumptions for options The Black-Scholes option-pricing model used the following assumptions for options granted during the year ended December 31, 2022 (there were no options granted for the years ended December 31, 2024 and 2023):
2022
Dividend yield— %
Risk free interest rate3.57 %
Expected volatility(1)
32.30 %
Expected life (in years)6.3
Weighted average grant date fair value$1.93
(1) The volatility assumption used was based on the average estimated volatility of a reinsurance peer group.
Schedule of options activity
The options activity for the year ended December 31, 2024 were as follows:
Number of
options
Weighted
average exercise
price
Outstanding as of January 1, 20244,161,316 $8.26 
Exercised(2,035,211)9.19 
Outstanding as of December 31, 20242,126,105 7.36 
Exercisable as of December 31, 20241,911,775 $7.42 
v3.25.0.1
Earnings per share available to SiriusPoint common shareholders (Tables)
12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Computation of basic and diluted earnings (loss) per share available to SiriusPoint common shareholders
The following sets forth the computation of basic and diluted earnings (loss) per share available to SiriusPoint common shareholders for the years ended December 31, 2024, 2023 and 2022:
202420232022
Weighted-average number of common shares outstanding:($ in millions, except share and per share amounts)
Basic number of common shares outstanding166,537,394 163,341,448 160,228,588 
Dilutive effect of options1,055,916 595,908 — 
Dilutive effect of warrants— 899,249 — 
Dilutive effect of restricted share awards and units1,877,371 3,176,462 — 
Dilutive effect of Series A preference shares— 1,594,281 — 
Diluted number of common shares outstanding169,470,681 169,607,348 160,228,588 
Basic earnings (loss) per common share:
Net income (loss) available to SiriusPoint common shareholders$183.9 $338.8 $(402.8)
Net income allocated to SiriusPoint participating common shareholders(7.7)(24.3)— 
Net income (loss) allocated to SiriusPoint common shareholders$176.2 $314.5 $(402.8)
Basic earnings (loss) per share available to SiriusPoint common shareholders$1.06 $1.93 $(2.51)
Diluted earnings (loss) per common share:
Net income (loss) available to SiriusPoint common shareholders$183.9 $338.8 $(402.8)
Net income allocated to SiriusPoint participating common shareholders(7.7)(24.3)— 
Net income (loss) allocated to SiriusPoint common shareholders$176.2 $314.5 $(402.8)
Diluted earnings (loss) per share available to SiriusPoint common shareholders$1.04 $1.85 $(2.51)
v3.25.0.1
Related party transactions (Tables)
12 Months Ended
Dec. 31, 2024
Related Party Transactions [Abstract]  
Schedule of related party transactions
The following table provides the fair value of the Company's investments managed by related parties as of December 31, 2024 and December 31, 2023:
December 31, 2024December 31, 2023
Third Point Enhanced LP$87.6 $77.5 
Third Point Venture Offshore Fund I LP24.0 25.0 
Third Point Venture Offshore Fund II LP4.9 3.1 
Investments in related party investment funds, at fair value116.5 105.6 
Third Point Optimized Credit Portfolio (1)(2)
595.8 562.0 
Total investments managed by related parties$712.3 $667.6 
(1)The Third Point Optimized Credit Portfolio is reported in debt securities available for sale and trading in the consolidated balance sheets.
(2)Does not include asset-backed securities withdrawn as a redemption in-kind from the TP Enhanced Fund as of December 31, 2024 and 2023.
The total management, advisory and performance fees to related parties for the years ended December 31, 2024, 2023 and 2022 were as follows:
202420232022
Management and advisory fees$4.8 $5.2 $7.3 
Performance fees0.6 0.9 (1.2)
Total management, advisory and performance fees to related parties (1)
$5.4 $6.1 $6.1 
(1)Management, advisory and performance fees for the Related Party Investment Funds, where applicable, are presented within net realized and unrealized investment gains (losses) from related party investment funds in the consolidated statements of income (loss).
v3.25.0.1
Commitment and contingencies (Tables)
12 Months Ended
Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]  
Schedule of lease balances
The following table presents the lease balances within the consolidated balance sheets as of December 31, 2024 and 2023:
December 31,
2024
December 31,
2023
Operating lease right-of-use assets(1)
$22.8 $25.6 
Operating lease liabilities(2)
$24.5 $28.4 
Weighted average lease term (years)5.24.1
Weighted average discount rate3.0 %2.9 %
(1) Operating lease right-of-use assets are included in Other assets on the Company’s consolidated balance sheets.
(2) Operating lease liabilities are included in Accounts payable, accrued expenses and other liabilities on the Company’s consolidated balance sheets.
Schedule of future minimum rental commitments
Future minimum rental commitments as of December 31, 2024 under these leases are expected to be as follows:
Future Payments
2025$6.0 
20265.2 
20274.3 
20284.7 
2029 and thereafter5.9 
Total future annual minimum rental payments26.1 
Less: present value discount(1.6)
Total lease liability as of December 31, 2024$24.5 
v3.25.0.1
Statutory requirements (Tables)
12 Months Ended
Dec. 31, 2024
Insurance [Abstract]  
Schedule of statutory information The following is a summary of available and required statutory economic capital and surplus of the Bermuda based insurance subsidiaries as of December 31, 2023:
December 31, 2023
Available statutory economic capital and surplus
SiriusPoint Ltd.$3,226.7 
SiriusPoint Bermuda3,639.7 
Alstead Re5.3 
Required statutory economic capital and surplus
SiriusPoint Ltd.1,264.5 
SiriusPoint Bermuda1,239.9 
Alstead Re$2.4 
The BMA has completed its assessment of the impact of the Bermuda CIT on statutory capital and surplus, and has permitted the elective inclusion of the Bermuda CIT, including deferred tax effects, in statutory capital and surplus starting as of December 31, 2024.
The following is a summary of the statutory net income for the Bermuda based insurance subsidiaries for the years ended December 31, 2024 and 2023:
20242023
SiriusPoint Bermuda$381.5 $416.8 
Alstead Re$0.2 $0.7 
The following is a summary of estimated required statutory capital and surplus of the U.S. based insurance and reinsurance subsidiaries as of December 31, 2024 and actual amounts as of December 31, 2023:
December 31, 2024December 31, 2023
Estimated statutory capital and surplus
SiriusPoint America$639.4 $626.9 
SiriusPoint Specialty78.3 72.5 
Oakwood40.7 40.0 
Required statutory capital and surplus(1)
SiriusPoint America 192.0 177.0 
SiriusPoint Specialty14.7 9.7 
Oakwood$0.3 $0.3 
(1)Equals the authorized control level of the NAIC risk-based capital. The subsidiaries’ available capital exceeded their respective RBC requirements.
The following is a summary of the statutory net income for the U.S. based insurance and reinsurance subsidiaries for the years ended December 31, 2024 and 2023:
20242023
SiriusPoint America$41.2 $51.1 
SiriusPoint Specialty3.9 15.0 
Oakwood$0.7 $0.6 
v3.25.0.1
Significant accounting policies - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
segment
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Premium deficiency $ 0.0      
Net unrealized foreign currency translation losses $ (1,938.8) $ (2,530.6) $ (2,082.6)  
Number of operating segments | segment 2      
Change in foreign currency translation adjustment        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Net unrealized foreign currency translation losses $ 3.0 $ 4.1 $ 5.2 $ 0.2
v3.25.0.1
Significant transactions (Details)
$ / shares in Units, $ in Millions
2 Months Ended 12 Months Ended
Feb. 28, 2025
USD ($)
$ / shares
shares
Dec. 30, 2024
USD ($)
Aug. 01, 2024
USD ($)
shares
Feb. 28, 2025
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 01, 2024
USD ($)
Apr. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Purchases of SiriusPoint common shares under share repurchase program         $ 299.7 $ 0.0 $ 5.0        
Loss on settlement and change in fair value of liability-classified capital instruments         148.5 59.4 $ (27.4)        
Loss reserves                 $ 400.0 $ 905.6 $ 1,300.0
Expected loss to be recognized               $ 20.1      
Funds held liability         $ 297.2            
Aggregate limit, percentage of booked reserves         1.30       1.50    
Reinsurance balances payable         $ 1,781.6 1,736.7          
Deferred gain on retroactive reinsurance         8.5 $ 27.9          
CM Bermuda                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Seller’s costs and expenses         6.8            
Merger warrants                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Loss on settlement and change in fair value of liability-classified capital instruments         25.9            
CMIG Series A and Repurchase Agreement                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Purchases of SiriusPoint common shares under share repurchase program     $ 261.3                
Loss on settlement and change in fair value of liability-classified capital instruments     90.7                
Share Repurchase Agreement                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Purchases of SiriusPoint common shares under share repurchase program     $ 125.0                
Common shares repurchased and retired (in shares) | shares     9,077,705                
Common shares repurchased and retired   $ 649.2 $ 129.7                
Securities Purchase Agreement                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Payments for the repurchase of warrants and common stock   $ 250.0                  
Securities Purchase Agreement | Forecast                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Warrants repurchased (in shares) | shares 20,991,337                    
Warrants price (in dollars per share) | $ / shares $ 3.56     $ 3.56              
Stock repurchased (in shares) | shares 45,720,732                    
Shares acquired price (in dollars per share) | $ / shares $ 14.25                    
Payments for the repurchase of warrants and common stock $ 483.0     $ 733.0              
Pallas Reinsurance Company Ltd.                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Reinsurance balances payable         543.2            
Reinsurance recoverable         $ 569.2            
v3.25.0.1
Segment reporting - Narrative (Details)
12 Months Ended
Dec. 31, 2024
segment
Segment Reporting [Abstract]  
Number of operating segments 2
v3.25.0.1
Segment reporting - Operating segment results (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Segment Reporting Information [Line Items]      
Gross premiums written $ 3,244.6 $ 3,427.4 $ 3,409.7
Net premiums written 2,352.1 2,437.9 2,549.2
Net premiums earned 2,343.5 2,426.2 2,318.1
Loss and loss adjustment expenses incurred, net 1,368.5 1,381.3 1,588.4
Acquisition costs, net 516.9 472.7 461.9
Other underwriting expenses 181.7 196.3 184.5
Net underwriting income (loss) 276.4 375.9 83.3
Services revenues 184.2 97.8 82.8
Services expenses 232.1 258.2 312.8
Noncontrolling income (loss) (2.5) (8.9) (0.8)
Net income (loss) available to SiriusPoint 199.9 354.8 (386.8)
Segment income (loss) 276.4 375.9 83.3
Net investment income 303.6 283.7 113.3
Net realized and unrealized investment losses (88.7) (10.0) (225.5)
Net realized and unrealized investment gains (losses) from related party investment funds 9.7 (1.0) (210.5)
Loss on settlement and change in fair value of liability-classified capital instruments (148.5) (59.4) 27.4
Net corporate and other expenses (232.1) (258.2) (312.8)
Intangible asset amortization (11.9) (11.1) (8.1)
Interest expense (69.6) (64.1) (38.6)
Foreign exchange gains (losses) 10.0 (34.9) 66.0
Income (loss) before income tax (expense) benefit 233.1 318.7 (422.7)
Income tax (expense) benefit (30.7) 45.0 36.7
Net income (loss) 202.4 363.7 (386.0)
Attritional losses 1,421.6 1,530.7 1,471.8
Catastrophe losses 54.8 24.8 137.9
Prior year loss reserve development (107.9) (174.2) (21.3)
Total incurred loss and loss adjustment expenses $ 1,368.5 $ 1,381.3 $ 1,588.4
Underwriting Ratios:      
Attritional loss ratio 0.607 0.631 0.635
Catastrophe loss ratio 0.023 0.010 0.059
Prior year loss development ratio (0.046) (0.072) (0.009)
Loss ratio 58.40% 56.90% 68.50%
Acquisition cost ratio 22.10% 19.50% 19.90%
Other underwriting expenses ratio 7.80% 8.10% 8.00%
Combined ratio 88.30% 84.50% 96.40%
Services      
Segment Reporting Information [Line Items]      
Services revenues     $ 0.0
Net services fee income (loss)     0.0
Net income (loss) available to SiriusPoint     0.0
Operating Segments      
Segment Reporting Information [Line Items]      
Gross premiums written $ 3,176.4 $ 3,310.7 3,405.6
Net premiums written 2,340.9 2,343.7 2,545.6
Net premiums earned 2,199.1 2,280.6 2,299.9
Loss and loss adjustment expenses incurred, net 1,268.4 1,305.7 1,574.6
Acquisition costs, net 564.6 547.7 583.5
Other underwriting expenses 166.1 177.0 176.6
Net underwriting income (loss) 200.0 250.2 (34.8)
Noncontrolling income (loss) 0.0 0.0 0.0
Net income (loss) available to SiriusPoint 244.6 291.4 2.6
Segment income (loss) 244.6 291.4 2.6
Income (loss) before income tax (expense) benefit 244.6 291.4 2.6
Income tax (expense) benefit 0.0 0.0 0.0
Net income (loss) 244.6 291.4 2.6
Attritional losses 1,314.3 1,459.6 1,450.2
Catastrophe losses 54.8 13.5 137.9
Prior year loss reserve development (100.7) (167.4) (13.5)
Total incurred loss and loss adjustment expenses $ 1,268.4 $ 1,305.7 $ 1,574.6
Underwriting Ratios:      
Attritional loss ratio 0.598 0.640 0.631
Catastrophe loss ratio 0.025 0.006 0.060
Prior year loss development ratio (0.046) (0.073) (0.006)
Loss ratio 57.70% 57.30% 68.50%
Acquisition cost ratio 25.70% 24.00% 25.40%
Other underwriting expenses ratio 7.60% 7.80% 7.70%
Combined ratio 91.00% 89.10% 101.60%
Operating Segments | Services      
Segment Reporting Information [Line Items]      
Services revenues $ 222.9 $ 237.5 $ 215.5
Services expenses 176.2 187.8 179.2
Net services fee income (loss) 46.7 49.7 36.3
Noncontrolling income (loss) (2.1) (8.5) 1.1
Net income (loss) available to SiriusPoint 44.6 41.2 37.4
Net corporate and other expenses (176.2) (187.8) (179.2)
Eliminations      
Segment Reporting Information [Line Items]      
Gross premiums written 0.0 0.0 0.0
Net premiums written 0.0 0.0 0.0
Net premiums earned 0.0 0.0 0.0
Loss and loss adjustment expenses incurred, net (5.5) (5.4) (5.2)
Acquisition costs, net (121.4) (137.2) (118.6)
Other underwriting expenses 0.0 0.0 0.0
Net underwriting income (loss) 126.9 142.6 123.8
Noncontrolling income (loss) 0.0 0.0 0.0
Net income (loss) available to SiriusPoint (5.9) (7.0) (9.6)
Segment income (loss) (5.9) (7.0) (9.6)
Income (loss) before income tax (expense) benefit (5.9) (7.0) (9.6)
Income tax (expense) benefit 0.0 0.0 0.0
Net income (loss) (5.9) (7.0) (9.6)
Attritional losses (5.5) (5.4) (5.2)
Catastrophe losses 0.0 0.0 0.0
Prior year loss reserve development 0.0 0.0 0.0
Total incurred loss and loss adjustment expenses (5.5) (5.4) (5.2)
Eliminations | Services      
Segment Reporting Information [Line Items]      
Services revenues (132.8) (149.6) (133.4)
Services expenses 0.0 0.0 0.0
Net services fee income (loss) (132.8) (149.6) (133.4)
Noncontrolling income (loss) 0.0 0.0 0.0
Net income (loss) available to SiriusPoint (132.8) (149.6) (133.4)
Net corporate and other expenses 0.0 0.0 0.0
Corporate      
Segment Reporting Information [Line Items]      
Gross premiums written 68.2 116.7 4.1
Net premiums written 11.2 94.2 3.6
Net premiums earned 144.4 145.6 18.2
Loss and loss adjustment expenses incurred, net 105.6 81.0 19.0
Acquisition costs, net 73.7 62.2 (3.0)
Other underwriting expenses 15.6 19.3 7.9
Net underwriting income (loss) (50.5) (16.9) (5.7)
Services revenues 94.1 9.9 0.7
Services expenses 55.9 70.4 133.6
Noncontrolling income (loss) (0.4) (0.4) (1.9)
Net income (loss) available to SiriusPoint (38.8) 70.4 (379.8)
Segment income (loss) (50.5) (16.9) (5.7)
Net investment income 303.6 283.7 113.3
Net realized and unrealized investment losses (88.7) (10.0) (225.5)
Net realized and unrealized investment gains (losses) from related party investment funds 9.7 (1.0) (210.5)
Loss on settlement and change in fair value of liability-classified capital instruments (148.5) (59.4) 27.4
Net corporate and other expenses (55.9) (70.4) (133.6)
Intangible asset amortization (11.9) (11.1) (8.1)
Interest expense (69.6) (64.1) (38.6)
Foreign exchange gains (losses) 10.0 (34.9) 66.0
Income (loss) before income tax (expense) benefit (7.7) 25.8 (414.6)
Income tax (expense) benefit (30.7) 45.0 36.7
Net income (loss) (38.4) 70.8 (377.9)
Attritional losses 112.8 76.5 26.8
Catastrophe losses   11.3 0.0
Prior year loss reserve development (7.2) (6.8) (7.8)
Total incurred loss and loss adjustment expenses 105.6 81.0 19.0
Segment Measure Reclass      
Segment Reporting Information [Line Items]      
Services revenues 90.1 87.9 82.1
Services expenses 176.2 187.8 179.2
Noncontrolling income (loss) (2.1) (8.5) 1.1
Net income (loss) available to SiriusPoint 0.0 0.0 0.0
Segment income (loss) 88.2 108.4 96.0
Net realized and unrealized investment losses 0.0 0.0  
Net corporate and other expenses (176.2) (187.8) (179.2)
Income (loss) before income tax (expense) benefit 2.1 8.5 (1.1)
Income tax (expense) benefit 0.0 0.0 0.0
Net income (loss) 2.1 8.5 (1.1)
Segment Measure Reclass | Services      
Segment Reporting Information [Line Items]      
Services revenues (90.1) (87.9) (82.1)
Services expenses (176.2) (187.8) (179.2)
Net services fee income (loss) 86.1 99.9 97.1
Noncontrolling income (loss) 2.1 8.5 (1.1)
Net income (loss) available to SiriusPoint 88.2 108.4 96.0
Net corporate and other expenses 176.2 187.8 179.2
Reinsurance | Operating Segments      
Segment Reporting Information [Line Items]      
Gross premiums written 1,335.6 1,271.0 1,521.4
Net premiums written 1,104.7 1,061.0 1,199.6
Net premiums earned 1,045.1 1,031.4 1,213.1
Loss and loss adjustment expenses incurred, net 554.3 490.3 855.9
Acquisition costs, net 279.9 252.2 310.3
Other underwriting expenses 86.1 82.7 113.8
Net underwriting income (loss) 124.8 206.2 (66.9)
Segment income (loss) 124.8 205.1 (67.1)
Income (loss) before income tax (expense) benefit 124.8 205.1 (67.1)
Attritional losses 579.8 618.9 728.4
Catastrophe losses 49.5 12.2 136.3
Prior year loss reserve development (75.0) (140.8) (8.8)
Total incurred loss and loss adjustment expenses $ 554.3 $ 490.3 $ 855.9
Underwriting Ratios:      
Attritional loss ratio 0.555 0.600 0.601
Catastrophe loss ratio 0.047 0.012 0.112
Prior year loss development ratio (0.072) (0.137) (0.007)
Loss ratio 53.00% 47.50% 70.60%
Acquisition cost ratio 26.80% 24.50% 25.60%
Other underwriting expenses ratio 8.20% 8.00% 9.40%
Combined ratio 88.00% 80.00% 105.60%
Reinsurance | Operating Segments | Services      
Segment Reporting Information [Line Items]      
Services revenues $ 0.0 $ (1.1) $ (0.2)
Services expenses 0.0 0.0 0.0
Net services fee income (loss) 0.0 (1.1) (0.2)
Noncontrolling income (loss) 0.0 0.0 0.0
Net income (loss) available to SiriusPoint 0.0 (1.1) (0.2)
Net corporate and other expenses 0.0 0.0 0.0
Insurance & Services | Operating Segments      
Segment Reporting Information [Line Items]      
Gross premiums written 1,840.8 2,039.7 1,884.2
Net premiums written 1,236.2 1,282.7 1,346.0
Net premiums earned 1,154.0 1,249.2 1,086.8
Loss and loss adjustment expenses incurred, net 714.1 815.4 718.7
Acquisition costs, net 284.7 295.5 273.2
Other underwriting expenses 80.0 94.3 62.8
Net underwriting income (loss) 75.2 44.0 32.1
Segment income (loss) 119.8 86.3 69.7
Income (loss) before income tax (expense) benefit 119.8 86.3 69.7
Attritional losses 734.5 840.7 721.8
Catastrophe losses 5.3 1.3 1.6
Prior year loss reserve development (25.7) (26.6) (4.7)
Total incurred loss and loss adjustment expenses $ 714.1 $ 815.4 $ 718.7
Underwriting Ratios:      
Attritional loss ratio 0.636 0.673 0.664
Catastrophe loss ratio 0.005 0.001 0.001
Prior year loss development ratio (0.022) (0.021) (0.004)
Loss ratio 61.90% 65.30% 66.10%
Acquisition cost ratio 24.70% 23.70% 25.10%
Other underwriting expenses ratio 6.90% 7.50% 5.80%
Combined ratio 93.50% 96.50% 97.00%
Insurance & Services | Operating Segments | Services      
Segment Reporting Information [Line Items]      
Services revenues $ 222.9 $ 238.6 $ 215.7
Services expenses 176.2 187.8 179.2
Net services fee income (loss) 46.7 50.8 36.5
Noncontrolling income (loss) (2.1) (8.5) 1.1
Net income (loss) available to SiriusPoint 44.6 42.3 37.6
Net corporate and other expenses $ (176.2) $ (187.8) $ (179.2)
v3.25.0.1
Segment reporting - Net premiums written by location and reportable segment (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Segment Reporting Information [Line Items]      
Net premiums written $ 2,352.1 $ 2,437.9 $ 2,549.2
United States and Canada      
Segment Reporting Information [Line Items]      
Net premiums written 1,440.1 1,668.9 1,886.9
United Kingdom and Europe      
Segment Reporting Information [Line Items]      
Net premiums written 547.7 419.6 365.2
Bermuda, the Caribbean and Latin America      
Segment Reporting Information [Line Items]      
Net premiums written 191.4 (5.9) 226.0
Asia and Other      
Segment Reporting Information [Line Items]      
Net premiums written 172.9 355.3 71.1
United States and Canada      
Segment Reporting Information [Line Items]      
Net premiums written 1,045.1 1,261.8 1,501.0
United Kingdom and Europe      
Segment Reporting Information [Line Items]      
Net premiums written 891.0 631.0 639.8
Bermuda, the Caribbean and Latin America      
Segment Reporting Information [Line Items]      
Net premiums written 416.0 548.0 406.0
Asia and Other      
Segment Reporting Information [Line Items]      
Net premiums written   (2.9) 2.4
Operating Segments      
Segment Reporting Information [Line Items]      
Net premiums written 2,340.9 2,343.7 2,545.6
Operating Segments | Reinsurance      
Segment Reporting Information [Line Items]      
Net premiums written 1,104.7 1,061.0 1,199.6
Operating Segments | Reinsurance | United States and Canada      
Segment Reporting Information [Line Items]      
Net premiums written 745.6 750.6 746.9
Operating Segments | Reinsurance | United Kingdom and Europe      
Segment Reporting Information [Line Items]      
Net premiums written 255.3 172.1 241.6
Operating Segments | Reinsurance | Bermuda, the Caribbean and Latin America      
Segment Reporting Information [Line Items]      
Net premiums written 28.1 (2.1) 171.4
Operating Segments | Reinsurance | Asia and Other      
Segment Reporting Information [Line Items]      
Net premiums written 75.7 140.4 39.7
Operating Segments | Reinsurance | United States and Canada      
Segment Reporting Information [Line Items]      
Net premiums written 447.5 516.6 569.2
Operating Segments | Reinsurance | United Kingdom and Europe      
Segment Reporting Information [Line Items]      
Net premiums written 429.9 345.9 384.4
Operating Segments | Reinsurance | Bermuda, the Caribbean and Latin America      
Segment Reporting Information [Line Items]      
Net premiums written 227.3 198.5 243.6
Operating Segments | Reinsurance | Asia and Other      
Segment Reporting Information [Line Items]      
Net premiums written   0.0 2.4
Operating Segments | Insurance & Services      
Segment Reporting Information [Line Items]      
Net premiums written 1,236.2 1,282.7 1,346.0
Operating Segments | Insurance & Services | United States and Canada      
Segment Reporting Information [Line Items]      
Net premiums written 679.0 914.2 1,139.5
Operating Segments | Insurance & Services | United Kingdom and Europe      
Segment Reporting Information [Line Items]      
Net premiums written 294.1 243.4 120.5
Operating Segments | Insurance & Services | Bermuda, the Caribbean and Latin America      
Segment Reporting Information [Line Items]      
Net premiums written 165.0 (2.4) 54.6
Operating Segments | Insurance & Services | Asia and Other      
Segment Reporting Information [Line Items]      
Net premiums written 98.1 127.5 31.4
Operating Segments | Insurance & Services | United States and Canada      
Segment Reporting Information [Line Items]      
Net premiums written 603.4 653.2 931.3
Operating Segments | Insurance & Services | United Kingdom and Europe      
Segment Reporting Information [Line Items]      
Net premiums written 467.5 280.7 255.0
Operating Segments | Insurance & Services | Bermuda, the Caribbean and Latin America      
Segment Reporting Information [Line Items]      
Net premiums written 165.3 348.8 159.7
Operating Segments | Insurance & Services | Asia and Other      
Segment Reporting Information [Line Items]      
Net premiums written   0.0 0.0
Corporate      
Segment Reporting Information [Line Items]      
Net premiums written 11.2 94.2 3.6
Corporate | United States and Canada      
Segment Reporting Information [Line Items]      
Net premiums written 15.5 4.1 0.5
Corporate | United Kingdom and Europe      
Segment Reporting Information [Line Items]      
Net premiums written (1.7) 4.1 3.1
Corporate | Bermuda, the Caribbean and Latin America      
Segment Reporting Information [Line Items]      
Net premiums written (1.7) (1.4) 0.0
Corporate | Asia and Other      
Segment Reporting Information [Line Items]      
Net premiums written (0.9) 87.4 0.0
Corporate | United States and Canada      
Segment Reporting Information [Line Items]      
Net premiums written (5.8) 92.0 0.5
Corporate | United Kingdom and Europe      
Segment Reporting Information [Line Items]      
Net premiums written (6.4) 4.4 0.4
Corporate | Bermuda, the Caribbean and Latin America      
Segment Reporting Information [Line Items]      
Net premiums written $ 23.4 0.7 2.7
Corporate | Asia and Other      
Segment Reporting Information [Line Items]      
Net premiums written   $ (2.9) $ 0.0
v3.25.0.1
Cash, cash equivalents, restricted cash and restricted investments (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Restricted Cash and Cash Equivalents Items [Line Items]        
Cash and cash equivalents $ 682.0 $ 969.2    
Restricted cash 212.6 132.1    
Total cash, cash equivalents and restricted cash 894.6 1,101.3 $ 913.7 $ 1,948.4
Restricted investments securing reinsurance contracts and letter of credit facilities 2,215.0 2,668.0    
Total cash, cash equivalents, restricted cash and restricted investments 3,109.6 3,769.3    
Managing general underwriters        
Restricted Cash and Cash Equivalents Items [Line Items]        
Restricted cash 26.8 22.5    
Letter of credit facilities        
Restricted Cash and Cash Equivalents Items [Line Items]        
Restricted cash 36.5 56.9    
Reinsurance contracts        
Restricted Cash and Cash Equivalents Items [Line Items]        
Restricted cash $ 149.3 $ 52.7    
v3.25.0.1
Fair value measurements - Investments categorized by the level of the fair value hierarchy (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Assets    
Debt securities, AFS $ 5,131.0 $ 4,755.4
Debt securities, trading 162.2 534.9
Short-term investments 95.8 371.6
Other long-term investments 200.0 310.1
Cost and equity method investments 64.7 80.1
Total assets 5,706.4 6,093.3
Liabilities    
Liability-classified capital instruments 0.0 67.3
Derivative liabilities 14.3 6.4
Total liabilities 14.3 73.7
Asset-backed securities    
Assets    
Debt securities, AFS 1,149.7 880.7
Debt securities, trading 53.1 256.6
Residential mortgage-backed securities    
Assets    
Debt securities, AFS 973.8 902.8
Debt securities, trading 48.7 57.2
Commercial mortgage-backed securities    
Assets    
Debt securities, AFS 224.5 204.1
Debt securities, trading 51.8 67.8
Corporate debt securities    
Assets    
Debt securities, AFS 1,899.9 1,573.1
Debt securities, trading 4.6 45.2
U.S. government and government agency    
Assets    
Debt securities, AFS 859.0 1,136.7
Debt securities, trading 4.0 98.1
Non-U.S. government and government agency    
Assets    
Debt securities, AFS 24.1 58.0
Debt securities, trading   10.0
Fair Value, Inputs, Level 1, 2 and 3    
Assets    
Debt securities, AFS 5,131.0 4,755.4
Debt securities, trading 162.2 534.9
Short-term investments 95.8 371.6
Other long-term investments 89.9 171.3
Derivative assets 0.9 15.7
Total assets 5,479.8 5,848.9
Fair Value, Inputs, Level 1, 2 and 3 | Asset-backed securities    
Assets    
Debt securities, AFS 1,149.7 880.7
Debt securities, trading 53.1 256.6
Fair Value, Inputs, Level 1, 2 and 3 | Residential mortgage-backed securities    
Assets    
Debt securities, AFS 973.8 902.8
Debt securities, trading 48.7 57.2
Fair Value, Inputs, Level 1, 2 and 3 | Commercial mortgage-backed securities    
Assets    
Debt securities, AFS 224.5 204.1
Debt securities, trading 51.8 67.8
Fair Value, Inputs, Level 1, 2 and 3 | Corporate debt securities    
Assets    
Debt securities, AFS 1,899.9 1,573.1
Debt securities, trading 4.6 45.2
Fair Value, Inputs, Level 1, 2 and 3 | U.S. government and government agency    
Assets    
Debt securities, AFS 859.0 1,136.7
Debt securities, trading 4.0 98.1
Fair Value, Inputs, Level 1, 2 and 3 | Non-U.S. government and government agency    
Assets    
Debt securities, AFS 24.1 58.0
Debt securities, trading   10.0
Quoted prices in active markets (Level 1)    
Assets    
Debt securities, AFS 859.0 1,132.6
Debt securities, trading 4.0 98.1
Short-term investments 73.6 321.9
Other long-term investments 0.3 1.6
Derivative assets 0.0 0.0
Total assets 936.9 1,554.2
Liabilities    
Liability-classified capital instruments   0.0
Derivative liabilities 0.0 0.0
Total liabilities 0.0 0.0
Quoted prices in active markets (Level 1) | Asset-backed securities    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Quoted prices in active markets (Level 1) | Residential mortgage-backed securities    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Quoted prices in active markets (Level 1) | Commercial mortgage-backed securities    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Quoted prices in active markets (Level 1) | Corporate debt securities    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Quoted prices in active markets (Level 1) | U.S. government and government agency    
Assets    
Debt securities, AFS 859.0 1,132.6
Debt securities, trading 4.0 98.1
Quoted prices in active markets (Level 1) | Non-U.S. government and government agency    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading   0.0
Significant other observable inputs (Level 2)    
Assets    
Debt securities, AFS 4,272.0 3,622.8
Debt securities, trading 158.2 436.8
Short-term investments 22.2 49.7
Other long-term investments 3.0 0.0
Derivative assets 0.0 0.0
Total assets 4,455.4 4,109.3
Liabilities    
Liability-classified capital instruments   0.0
Derivative liabilities 0.0 0.0
Total liabilities 0.0 0.0
Significant other observable inputs (Level 2) | Asset-backed securities    
Assets    
Debt securities, AFS 1,149.7 880.7
Debt securities, trading 53.1 256.6
Significant other observable inputs (Level 2) | Residential mortgage-backed securities    
Assets    
Debt securities, AFS 973.8 902.8
Debt securities, trading 48.7 57.2
Significant other observable inputs (Level 2) | Commercial mortgage-backed securities    
Assets    
Debt securities, AFS 224.5 204.1
Debt securities, trading 51.8 67.8
Significant other observable inputs (Level 2) | Corporate debt securities    
Assets    
Debt securities, AFS 1,899.9 1,573.1
Debt securities, trading 4.6 45.2
Significant other observable inputs (Level 2) | U.S. government and government agency    
Assets    
Debt securities, AFS 0.0 4.1
Debt securities, trading 0.0 0.0
Significant other observable inputs (Level 2) | Non-U.S. government and government agency    
Assets    
Debt securities, AFS 24.1 58.0
Debt securities, trading   10.0
Significant unobservable inputs (Level 3)    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Short-term investments 0.0 0.0
Other long-term investments 86.6 169.7
Derivative assets 0.9 15.7
Total assets 87.5 185.4
Liabilities    
Liability-classified capital instruments   67.3
Derivative liabilities 14.3 6.4
Total liabilities 14.3 73.7
Significant unobservable inputs (Level 3) | Asset-backed securities    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Significant unobservable inputs (Level 3) | Residential mortgage-backed securities    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Significant unobservable inputs (Level 3) | Commercial mortgage-backed securities    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Significant unobservable inputs (Level 3) | Corporate debt securities    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Significant unobservable inputs (Level 3) | U.S. government and government agency    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading 0.0 0.0
Significant unobservable inputs (Level 3) | Non-U.S. government and government agency    
Assets    
Debt securities, AFS 0.0 0.0
Debt securities, trading   0.0
Valued at NAV    
Assets    
Investments in funds valued at NAV $ 161.9 $ 164.3
v3.25.0.1
Fair value measurements - Reconciliation of investments measured at fair value using Level 3 inputs (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 185.4 $ 240.0
Transfers in to (out of) Level 3 0.0 (25.3)
Purchases 0.0 9.4
Sales 0.0 (30.7)
Realized and Unrealized Gains (Losses) (97.9) (8.0)
Ending balance $ 87.5 $ 185.4
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net Investment Income (Loss) And Gain (Loss) On Investments Net Investment Income (Loss) And Gain (Loss) On Investments
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ (73.7) $ (30.0)
Transfers in to (out of) Level 3 0.0 0.0
Purchases 0.0 (5.1)
Sales 216.9 22.3
Realized and Unrealized Gains (Losses) (157.5) (60.9)
Ending balance $ (14.3) $ (73.7)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net Investment Income (Loss) And Gain (Loss) On Investments Net Investment Income (Loss) And Gain (Loss) On Investments
Liability-classified capital instruments    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ (67.3) $ (21.4)
Transfers in to (out of) Level 3 0.0 0.0
Purchases 0.0 0.0
Sales 215.8 3.8
Realized and Unrealized Gains (Losses) (148.5) (49.7)
Ending balance 0.0 (67.3)
Derivative liabilities    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance (6.4) (8.6)
Transfers in to (out of) Level 3 0.0 0.0
Purchases 0.0 (5.1)
Sales 1.1 18.5
Realized and Unrealized Gains (Losses) (9.0) (11.2)
Ending balance (14.3) (6.4)
Preferred stocks    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 0.0 3.2
Transfers in to (out of) Level 3   0.0
Purchases   0.0
Sales   (2.3)
Realized and Unrealized Gains (Losses)   (0.9)
Ending balance   0.0
Other long-term investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 169.7 227.3
Transfers in to (out of) Level 3 0.0 (25.3)
Purchases 0.0 6.6
Sales 0.0 (14.7)
Realized and Unrealized Gains (Losses) (83.1) (24.2)
Ending balance 86.6 169.7
Derivative assets    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 15.7 9.5
Transfers in to (out of) Level 3 0.0 0.0
Purchases 0.0 2.8
Sales 0.0 (13.7)
Realized and Unrealized Gains (Losses) (14.8) 17.1
Ending balance $ 0.9 $ 15.7
v3.25.0.1
Fair value measurements - Financial instruments not measured at fair value (Details) - Level 2 - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Fair Value | Series B preference shares    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Series B preference shares $ 206.0 $ 197.4
Fair Value | Senior Notes | 2024 Senior Notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Long-term debt 411.2  
Fair Value | Senior Notes | 2016 Senior Notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Long-term debt 0.0 370.0
Fair Value | Senior Notes | 2015 Senior Notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Long-term debt 0.0 115.2
Fair Value | Subordinated Notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Long-term debt 228.7 206.6
Carrying Value | Series B preference shares    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Series B preference shares 200.0 200.0
Carrying Value | Senior Notes | 2024 Senior Notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Long-term debt 394.8  
Carrying Value | Senior Notes | 2016 Senior Notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Long-term debt 0.0 403.5
Carrying Value | Senior Notes | 2015 Senior Notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Long-term debt 0.0 114.8
Carrying Value | Subordinated Notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Long-term debt $ 244.3 $ 267.9
v3.25.0.1
Investments - Summary of debt securities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Debt securities, available for sale    
Cost or amortized cost $ 5,143.8 $ 4,754.6
Gross unrealized gains 32.3 42.9
Gross unrealized losses (40.2) (41.2)
Net foreign currency gains (losses) (4.9) (0.9)
Fair value 5,131.0 4,755.4
Debt securities, trading    
Cost or amortized cost 187.3 568.1
Gross unrealized gains 0.6 0.7
Gross unrealized losses (25.7) (33.9)
Net foreign currency gains (losses) 0.0 0.0
Fair value 162.2 534.9
Debt securities, available for sale, allowance for credit losses 1.1 0.0
Asset-backed securities    
Debt securities, available for sale    
Cost or amortized cost 1,142.7 882.2
Gross unrealized gains 11.2 7.8
Gross unrealized losses (4.2) (9.3)
Net foreign currency gains (losses) 0.0 0.0
Fair value 1,149.7 880.7
Debt securities, trading    
Cost or amortized cost 54.7 261.1
Gross unrealized gains 0.0 0.6
Gross unrealized losses (1.6) (5.1)
Net foreign currency gains (losses) 0.0 0.0
Fair value 53.1 256.6
Residential mortgage-backed securities    
Debt securities, available for sale    
Cost or amortized cost 985.8 903.0
Gross unrealized gains 8.3 15.8
Gross unrealized losses (20.3) (16.0)
Net foreign currency gains (losses) 0.0 0.0
Fair value 973.8 902.8
Debt securities, trading    
Cost or amortized cost 56.4 67.0
Gross unrealized gains 0.0 0.0
Gross unrealized losses (7.7) (9.8)
Net foreign currency gains (losses) 0.0 0.0
Fair value 48.7 57.2
Commercial mortgage-backed securities    
Debt securities, available for sale    
Cost or amortized cost 224.2 204.0
Gross unrealized gains 1.4 1.6
Gross unrealized losses (1.1) (1.5)
Net foreign currency gains (losses) 0.0 0.0
Fair value 224.5 204.1
Debt securities, trading    
Cost or amortized cost 56.8 76.7
Gross unrealized gains 0.5 0.1
Gross unrealized losses (5.5) (9.0)
Net foreign currency gains (losses) 0.0 0.0
Fair value 51.8 67.8
Corporate debt securities    
Debt securities, available for sale    
Cost or amortized cost 1,905.2 1,569.6
Gross unrealized gains 9.1 12.0
Gross unrealized losses (10.4) (7.5)
Net foreign currency gains (losses) (4.0) (1.0)
Fair value 1,899.9 1,573.1
Debt securities, trading    
Cost or amortized cost 15.1 52.2
Gross unrealized gains 0.1 0.0
Gross unrealized losses (10.6) (7.0)
Net foreign currency gains (losses) 0.0 0.0
Fair value 4.6 45.2
U.S. government and government agency    
Debt securities, available for sale    
Cost or amortized cost 861.0 1,137.8
Gross unrealized gains 2.2 5.5
Gross unrealized losses (4.2) (6.6)
Net foreign currency gains (losses) 0.0 0.0
Fair value 859.0 1,136.7
Debt securities, trading    
Cost or amortized cost 4.3 100.8
Gross unrealized gains 0.0 0.0
Gross unrealized losses (0.3) (2.7)
Net foreign currency gains (losses) 0.0 0.0
Fair value 4.0 98.1
Non-U.S. government and government agency    
Debt securities, available for sale    
Cost or amortized cost 24.9 58.0
Gross unrealized gains 0.1 0.2
Gross unrealized losses 0.0 (0.3)
Net foreign currency gains (losses) (0.9) 0.1
Fair value $ 24.1 58.0
Debt securities, trading    
Cost or amortized cost   10.3
Gross unrealized gains   0.0
Gross unrealized losses   (0.3)
Net foreign currency gains (losses)   0.0
Fair value   $ 10.0
v3.25.0.1
Investments - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
security
Dec. 31, 2023
USD ($)
security
Debt and Equity Securities, FV-NI [Line Items]    
Number of available-for-sale investment securities, unrealized loss position, twelve month or more category | security 518 718
Weighted average duration of debt securities 3 years 1 month 6 days 2 years 9 months 18 days
TP Enhanced Fund | TP Enhanced Fund    
Debt and Equity Securities, FV-NI [Line Items]    
Ownership percentage 89.20%  
Third Point Enhanced LP    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments, unfunded commitments $ 0.0  
Third Point Venture Offshore Fund I LP    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments, unfunded commitments $ 9.3  
Percentage of net asset value held 16.80%  
Third Point Venture Offshore Fund II LP    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments, unfunded commitments $ 19.7  
Percentage of net asset value held 17.80%  
Sub-prime    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities $ 161.2 $ 185.1
Sub-prime | AAA    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities 94.9 117.5
Sub-prime | AA    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities 31.8 37.7
Sub-prime | A    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities 8.2 12.3
Sub-prime | BBB    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities 24.9 13.3
Sub-prime | Not Rated    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities $ 1.4 $ 4.3
v3.25.0.1
Investments - Debt securities unrealized loss positions (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Fair value    
12 Months or Less $ 1,670.9 $ 1,676.2
Greater than 12 Months 364.7 592.0
Total 2,035.6 2,268.2
Gross unrealized losses    
12 Months or Less (23.4) (25.9)
Greater than 12 Months (16.8) (15.3)
Total (40.2) (41.2)
Asset-backed securities    
Fair value    
12 Months or Less 180.4 307.2
Greater than 12 Months 23.8 17.8
Total 204.2 325.0
Gross unrealized losses    
12 Months or Less (1.8) (8.5)
Greater than 12 Months (2.4) (0.8)
Total (4.2) (9.3)
Residential mortgage-backed securities    
Fair value    
12 Months or Less 437.4 298.9
Greater than 12 Months 223.9 134.3
Total 661.3 433.2
Gross unrealized losses    
12 Months or Less (7.9) (9.8)
Greater than 12 Months (12.4) (6.2)
Total (20.3) (16.0)
Commercial mortgage-backed securities    
Fair value    
12 Months or Less 67.4 87.7
Greater than 12 Months 7.5 28.9
Total 74.9 116.6
Gross unrealized losses    
12 Months or Less (0.7) (0.9)
Greater than 12 Months (0.4) (0.6)
Total (1.1) (1.5)
Corporate debt securities    
Fair value    
12 Months or Less 738.5 593.1
Greater than 12 Months 46.8 191.1
Total 785.3 784.2
Gross unrealized losses    
12 Months or Less (10.0) (4.0)
Greater than 12 Months (0.4) (3.5)
Total (10.4) (7.5)
U.S. government and government agency    
Fair value    
12 Months or Less 247.2 370.7
Greater than 12 Months 62.7 209.9
Total 309.9 580.6
Gross unrealized losses    
12 Months or Less (3.0) (2.6)
Greater than 12 Months (1.2) (4.0)
Total $ (4.2) (6.6)
Non-U.S. government and government agency    
Fair value    
12 Months or Less   18.6
Greater than 12 Months   10.0
Total   28.6
Gross unrealized losses    
12 Months or Less   (0.1)
Greater than 12 Months   (0.2)
Total   $ (0.3)
v3.25.0.1
Investments - Debt securities by contractual maturity (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Debt securities, AFS - Cost or amortized cost    
Due in one year or less $ 449.3 $ 358.6
Due after one year through five years 1,648.0 2,221.0
Due after five years through ten years 589.5 183.3
Due after ten years 104.3 2.5
Cost or amortized cost 5,143.8 4,754.6
Debt securities, AFS - Fair value    
Due in one year or less 448.2 357.2
Due after one year through five years 1,646.7 2,219.8
Due after five years through ten years 586.2 188.5
Due after ten years 101.9 2.3
Fair value 5,131.0 4,755.4
Debt securities, trading - Cost or Amortized cost    
Due in one year or less 0.5 80.2
Due after one year through five years 6.7 37.2
Due after five years through ten years 0.3 19.4
Due after ten years 11.9 26.6
Cost or amortized cost 187.3 568.1
Debt securities, trading - Fair value    
Due in one year or less 0.5 79.7
Due after one year through five years 6.3 34.5
Due after five years through ten years 0.3 18.0
Due after ten years 1.6 21.3
Fair value 162.2 534.9
Mortgage-backed and asset-backed securities    
Debt securities, AFS - Cost or amortized cost    
Mortgage-backed and asset-backed securities 2,352.7 1,989.2
Debt securities, AFS - Fair value    
Mortgage-backed and asset-backed securities 2,348.0 1,987.6
Debt securities, trading - Cost or Amortized cost    
Debt securities without single maturity date 167.9 404.7
Debt securities, trading - Fair value    
Debt securities without single maturity date $ 153.5 $ 381.4
v3.25.0.1
Investments - Ratings and fair value of debt securities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities, AFS $ 5,131.0 $ 4,755.4
Debt securities, trading 162.2 534.9
AAA    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities, AFS 808.5 730.4
Debt securities, trading 74.0 248.4
AA    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities, AFS 2,227.9 2,334.4
Debt securities, trading 54.0 177.0
A    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities, AFS 1,375.0 1,122.1
Debt securities, trading 6.9 28.9
BBB    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities, AFS 659.2 515.5
Debt securities, trading 24.2 71.7
Other    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities, AFS 60.4 53.0
Debt securities, trading $ 3.1 $ 8.9
v3.25.0.1
Investments - Summary of equity securities and other long-term investments (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]    
Other long-term investments, Cost or amortized cost $ 317.8 $ 358.1
Other long-term investments, Gross unrealized gains 37.5 20.0
Other long-term investments, Gross unrealized losses (158.8) (70.6)
Other long-term investments, net foreign currency gains 3.5 2.6
Other long-term investments, Fair value $ 200.0 $ 310.1
v3.25.0.1
Investments - Carrying value of other-long term investments (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments $ 200.0 $ 310.1
Valued at Level 3    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments 86.6 169.7
Hedge funds and private equity funds    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments 69.5 74.5
Hedge funds and private equity funds | Valued at NAV    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments 45.4 58.7
Hedge funds and private equity funds | Valued at Level 3    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments 0.0 0.0
Strategic Investments and Other Investments    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments, unfunded commitments 7.2 14.7
Strategic investments    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments 105.0 203.9
Other investments    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments $ 25.5 $ 31.7
v3.25.0.1
Investments - Investments in unconsolidated entities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments $ 200.0 $ 310.1
Equity method eligible unconsolidated entities, using the fair value option    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments 66.6 139.2
Equity method investments    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments 26.1 37.0
Other unconsolidated investments, at fair value    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments 68.7 90.8
Other unconsolidated investments, at cost    
Debt and Equity Securities, FV-NI [Line Items]    
Other long-term investments $ 38.6 $ 43.1
v3.25.0.1
Investments - Investment in related party investment funds (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]    
Investments in related party investment funds, at fair value $ 116.5 $ 105.6
Related Party    
Debt and Equity Securities, FV-NI [Line Items]    
Investments in related party investment funds, at fair value 116.5 105.6
Third Point Enhanced LP | Related Party    
Debt and Equity Securities, FV-NI [Line Items]    
Investments in related party investment funds, at fair value 87.6 77.5
Third Point Venture Offshore Fund I LP | Related Party    
Debt and Equity Securities, FV-NI [Line Items]    
Investments in related party investment funds, at fair value 24.0 25.0
Third Point Venture Offshore Fund II LP | Related Party    
Debt and Equity Securities, FV-NI [Line Items]    
Investments in related party investment funds, at fair value $ 4.9 $ 3.1
v3.25.0.1
Total net investment income and realized and unrealized investment gains (losses) - Summary of total realized and unrealized investment gains (losses) and net investment income (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Net Investment Income [Line Items]      
Investment expenses $ (29.9) $ (16.1) $ (20.3)
Net investment income and net realized and unrealized investment gains (losses) 224.6 272.7 (322.7)
Debt securities, available for sale      
Net Investment Income [Line Items]      
Net investment income and realized and unrealized investment gains (losses) before investment expenses and investment income (loss) 270.5 181.6 35.1
Debt securities, trading      
Net Investment Income [Line Items]      
Net investment income and realized and unrealized investment gains (losses) before investment expenses and investment income (loss) 9.2 66.1 (115.6)
Short-term investments      
Net Investment Income [Line Items]      
Net investment income and realized and unrealized investment gains (losses) before investment expenses and investment income (loss) 10.0 29.3 17.7
Other long-term investments      
Net Investment Income [Line Items]      
Net investment income and realized and unrealized investment gains (losses) before investment expenses and investment income (loss) (72.2) (20.1) (11.0)
Derivative instruments      
Net Investment Income [Line Items]      
Net investment income and realized and unrealized investment gains (losses) before investment expenses and investment income (loss) (2.0) 4.8 0.0
Net realized and unrealized investment gains (losses) from related party investment funds      
Net Investment Income [Line Items]      
Net investment income and realized and unrealized investment gains (losses) before investment expenses and investment income (loss) 9.7 (1.0) (210.5)
Net investment income and realized and unrealized investment gains (losses) before other investment expenses and investment income (loss) on cash and cash equivalents      
Net Investment Income [Line Items]      
Net investment income and realized and unrealized investment gains (losses) before investment expenses and investment income (loss) 225.2 260.7 (284.3)
Cash and cash equivalents      
Net Investment Income [Line Items]      
Net investment income and realized and unrealized investment gains (losses) before investment expenses and investment income (loss) $ 29.3 $ 28.1 $ (18.1)
v3.25.0.1
Total net investment income and realized and unrealized investment gains (losses) - Summary of net realized and unrealized investment losses (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]      
Gross realized gains $ 25.8 $ 148.3 $ 56.2
Gross realized losses (49.1) (189.0) (132.3)
Net realized gains (losses) on investments (23.3) (40.7) (76.1)
Net unrealized gains (losses) on investments (65.4) 30.7 (149.4)
Net realized and unrealized gains (losses) on investments (88.7) (10.0) (225.5)
Net realized and unrealized gains (losses) from related party investments $ (60.5) $ (9.1) $ 5.6
v3.25.0.1
Total net investment income and realized and unrealized investment gains (losses) - Summary of net realized investment losses (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]      
Debt securities, available for sale $ (9.6) $ (10.0) $ 2.7
Debt securities, trading (7.9) (42.0) (66.7)
Short-term investments 0.6 (1.4) (2.9)
Derivative instruments (0.8) 0.0 0.0
Other long-term investments (5.2) 8.9 0.6
Net investment income (loss) on cash and cash equivalents (0.4) 3.8 (9.8)
Net realized gains (losses) on investments $ (23.3) $ (40.7) $ (76.1)
v3.25.0.1
Total net investment income and realized and unrealized investment gains (losses) - Summary of net realized investment gains on other long-term investments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Net Investment Income [Line Items]      
Investment, Type [Extensible Enumeration] Other long-term investments, at fair value (cost - $317.8; 2023 - $358.1) (includes related party investments at fair value of $100.7 (2023 - $173.7)) Other long-term investments, at fair value (cost - $317.8; 2023 - $358.1) (includes related party investments at fair value of $100.7 (2023 - $173.7)) Other long-term investments, at fair value (cost - $317.8; 2023 - $358.1) (includes related party investments at fair value of $100.7 (2023 - $173.7))
Net realized investment gains (losses) $ (23.3) $ (40.7) $ (76.1)
Hedge funds and private equity funds      
Net Investment Income [Line Items]      
Net realized investment gains (losses) 4.9 8.1 9.2
Strategic investments      
Net Investment Income [Line Items]      
Net realized investment gains (losses) (10.6) 0.8 (2.5)
Other investments      
Net Investment Income [Line Items]      
Net realized investment gains (losses) 0.5 0.0 (3.8)
Other long-term investments      
Net Investment Income [Line Items]      
Net realized investment gains (losses) $ (5.2) $ 8.9 $ 2.9
v3.25.0.1
Total net investment income and realized and unrealized investment gains (losses) - Summary of net unrealized investment gains (losses) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]      
Debt securities, trading $ 6.4 $ 62.3 $ (105.0)
Short-term investments (0.5) 1.7 (0.3)
Other long-term investments (70.0) (40.4) (23.9)
Derivative instruments (1.2) 4.8 0.0
Net investment income (loss) on cash and cash equivalents (0.1) 2.3 (20.2)
Net unrealized investment gains (losses) $ (65.4) $ 30.7 $ (149.4)
v3.25.0.1
Total net investment income and realized and unrealized investment gains (losses) - Summary of net unrealized investment gains on other long-term investments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Net Investment Income [Line Items]      
Investment, Type [Extensible Enumeration] Other long-term investments, at fair value (cost - $317.8; 2023 - $358.1) (includes related party investments at fair value of $100.7 (2023 - $173.7)) Other long-term investments, at fair value (cost - $317.8; 2023 - $358.1) (includes related party investments at fair value of $100.7 (2023 - $173.7)) Other long-term investments, at fair value (cost - $317.8; 2023 - $358.1) (includes related party investments at fair value of $100.7 (2023 - $173.7))
Other long-term investments $ (70.0) $ (40.3) $ (25.7)
Hedge funds and private equity funds      
Net Investment Income [Line Items]      
Other long-term investments 10.1 0.7 (7.3)
Strategic investments      
Net Investment Income [Line Items]      
Other long-term investments (70.5) (41.0) (8.2)
Other investments      
Net Investment Income [Line Items]      
Other long-term investments $ (9.6) $ 0.0 $ (10.2)
v3.25.0.1
Total net investment income and realized and unrealized investment gains (losses) - Summary of gains (losses) attributable to unrealized investment gains (losses) on level 3 investments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Net Investment Income [Line Items]      
Debt securities, trading $ 6.4 $ 62.3 $ (105.0)
Other long-term investments (70.0) (40.3) (25.7)
Net unrealized investment gains (losses) (65.4) 30.7 (149.4)
Level 3      
Net Investment Income [Line Items]      
Debt securities, trading 0.0 (0.8) 0.7
Other long-term investments (78.1) (25.2) (15.4)
Net unrealized investment gains (losses) $ (78.1) $ (26.0) $ (14.7)
v3.25.0.1
Derivatives - Narrative (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Foreign currency    
Derivative [Line Items]    
Collateral held $ 0.0 $ 42.2
Credit default swap    
Derivative [Line Items]    
Collateral held $ 9.9 $ 22.3
v3.25.0.1
Derivatives - Classification and fair value of derivatives (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Derivative [Line Items]    
Derivative liabilities at fair value $ 14.3 $ 6.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other assets Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accounts payable, accrued expenses and other liabilities Accounts payable, accrued expenses and other liabilities
Derivatives not designated as hedging instruments | Foreign currency forwards    
Derivative [Line Items]    
Derivative assets at fair value $ 0.9 $ 12.0
Derivative liabilities at fair value 3.3 0.0
Notional Value 768.6 585.3
Derivatives not designated as hedging instruments | Foreign currency swaps    
Derivative [Line Items]    
Derivative assets at fair value 0.0 0.0
Derivative liabilities at fair value 0.0 0.0
Notional Value 0.0 0.0
Derivatives not designated as hedging instruments | Weather derivatives    
Derivative [Line Items]    
Derivative assets at fair value 0.0 0.2
Derivative liabilities at fair value 5.6 1.0
Notional Value 3.7 30.6
Derivatives not designated as hedging instruments | Interest rate swaps    
Derivative [Line Items]    
Derivative assets at fair value 0.0 3.4
Derivative liabilities at fair value 0.0 1.7
Notional Value 29.8 62.7
Derivatives not designated as hedging instruments | Credit default swap    
Derivative [Line Items]    
Derivative assets at fair value 0.0 0.1
Derivative liabilities at fair value 0.5 0.0
Notional Value 49.1 30.0
Derivatives not designated as hedging instruments | Reinsurance contracts accounted for as derivatives    
Derivative [Line Items]    
Derivative assets at fair value 0.0 0.0
Derivative liabilities at fair value 4.9 3.7
Notional Value $ 100.1 $ 97.4
v3.25.0.1
Derivatives - Classification and net impact on earnings of derivatives (Details) - Derivatives not designated as hedging instruments - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Foreign currency futures contracts      
Derivative Instruments, Gain (Loss) [Line Items]      
Net impact on earnings $ 0.0 $ 0.0 $ (32.1)
Foreign currency forwards      
Derivative Instruments, Gain (Loss) [Line Items]      
Net impact on earnings 50.4 0.8 (8.1)
Weather derivatives      
Derivative Instruments, Gain (Loss) [Line Items]      
Net impact on earnings 1.2 2.6 7.3
Equity warrants      
Derivative Instruments, Gain (Loss) [Line Items]      
Net impact on earnings 0.0 0.0 (0.1)
Foreign currency swaps      
Derivative Instruments, Gain (Loss) [Line Items]      
Net impact on earnings 0.0 (3.8) 1.5
Interest rate swaps      
Derivative Instruments, Gain (Loss) [Line Items]      
Net impact on earnings 2.0 4.8 0.0
Credit default swap      
Derivative Instruments, Gain (Loss) [Line Items]      
Net impact on earnings 0.0 0.1 0.0
Reinsurance contracts accounted for as derivatives      
Derivative Instruments, Gain (Loss) [Line Items]      
Net impact on earnings $ 0.3 $ 0.0 $ 0.0
v3.25.0.1
Variable and voting interest entities - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2024
Jan. 31, 2023
Jun. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Variable Interest Entity [Line Items]            
Assets       $ 12,524.9 $ 12,871.5  
Liabilities       10,586.1 10,340.9  
Alstead Re            
Variable Interest Entity [Line Items]            
Assets       6.3 14.5  
Liabilities       $ 0.8 9.2  
Arcadian            
Variable Interest Entity [Line Items]            
Decrease in assets from deconsolidation $ 177.4   $ 177.4      
Decrease in liabilities from deconsolidation 143.2   143.2      
Decrease in carrying value of noncontrolling interest 17.5          
Gain on deconsolidation     95.9      
Estimated fair value of retained noncontrolling interest $ 115.0   $ 115.0      
Ownership percentage       49.00%    
Banyan            
Variable Interest Entity [Line Items]            
Ownership percentage   49.00%       100.00%
Gain on sale         1.5  
Alta Signa            
Variable Interest Entity [Line Items]            
Assets       $ 1.8 2.8  
Liabilities       $ 0.8 $ 0.8  
VOE, ownership percentage       75.10%    
TP Enhanced Fund | TP Enhanced Fund            
Variable Interest Entity [Line Items]            
Ownership percentage       89.20%    
Variable interest entity, primary beneficiary | TP Enhanced Fund | TP GP            
Variable Interest Entity [Line Items]            
Ownership percentage       10.80%    
v3.25.0.1
Variable and voting interest entities - Reconciliation of noncontrolling interests (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]      
Balance, beginning of period $ 16.7 $ 7.9  
Net income attributable to noncontrolling interests 2.5 8.9 $ 0.8
Contributions (redemptions) (0.3) 0.8  
Derecognition of noncontrolling interest (17.5) (0.9)  
Balance, end of period $ 1.4 $ 16.7 $ 7.9
v3.25.0.1
Variable and voting interest entities - Total assets and maximum exposure to loss for unconsolidated variable interest entities (Details) - Variable interest entity, not primary beneficiary, excluding investments in Related Party Investment Funds - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Variable Interest Entity [Line Items]    
Carrying Amount $ 143.7 $ 126.2
Maximum Exposure to Loss 237.4 131.9
Debt securities, available for sale    
Variable Interest Entity [Line Items]    
Carrying Amount 21.1 0.0
Maximum Exposure to Loss 79.3 0.0
Other long-term investments    
Variable Interest Entity [Line Items]    
Carrying Amount 122.6 126.2
Maximum Exposure to Loss $ 158.1 $ 131.9
v3.25.0.1
Loss and loss adjustment expense reserves - Summary of loss and loss adjustment expense reserves (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Insurance [Abstract]        
Case loss and loss adjustment expense reserves $ 1,856.0 $ 2,042.5    
Incurred but not reported loss and loss adjustment expense reserves 3,732.9 3,509.7    
Unallocated loss adjustment expense reserves 65.0 55.9    
Loss and loss adjustment expense reserves $ 5,653.9 $ 5,608.1 $ 5,268.7 $ 4,841.4
v3.25.0.1
Loss and loss adjustment expense reserves - Activity in the loss and loss adjustment expense reserves (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]      
Gross reserves for loss and loss adjustment expenses, beginning of year $ 5,608.1 $ 5,268.7 $ 4,841.4
Less: loss and loss adjustment expenses recoverable, beginning of year (2,295.1) (1,376.2) (1,215.3)
Less: deferred gains (charges) on retroactive reinsurance contracts 27.5 (1.0) (1.4)
Net reserves for loss and loss adjustment expenses, beginning of year 3,340.5 3,891.5 3,624.7
Net reserves for loss and loss adjustment expenses transferred (291.4) (758.3) 0.0
Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:      
Current year 1,476.4 1,555.5 1,609.7
Prior years (107.9) (174.2) (21.3)
Total incurred loss and loss adjustment expenses 1,368.5 1,381.3 1,588.4
Net loss and loss adjustment expenses paid in respect of losses occurring in:      
Current year (324.3) (347.4) (316.1)
Prior years (710.9) (837.3) (939.2)
Total net paid losses (1,035.2) (1,184.7) (1,255.3)
Foreign currency translation (35.3) 10.7 (66.3)
Net reserves for loss and loss adjustment expenses, end of year 3,347.1 3,340.5 3,891.5
Plus: loss and loss adjustment expenses recoverable, end of year 2,315.3 2,295.1 1,376.2
Plus: deferred charges on retroactive reinsurance contracts (8.5) (27.5) 1.0
Gross reserves for loss and loss adjustment expenses, end of year $ 5,653.9 $ 5,608.1 $ 5,268.7
v3.25.0.1
Loss and loss adjustment expense reserves - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
segment
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Insurance [Abstract]      
Prior Year Claims and Claims Adjustment Expense $ (107.9) $ (174.2) $ (21.3)
Favorable loss reserve development   $ 127.8  
Number of operating segments | segment 2    
v3.25.0.1
Loss and loss adjustment expense reserves - Loss and loss adjustment expense reserves by accident year and line of business (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Claims Development [Line Items]                      
Net reserves for loss and allocated loss adjustment expenses, end of year $ 3,222.0                    
Reinsurance | Operating Segments | Casualty                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 1,989.3                    
IBNR loss and ALAE reserves, net 719.4                    
Cumulative net losses and allocated loss adjustment expenses paid 1,038.1                    
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024 951.2                    
Net reserves for loss and allocated loss adjustment expenses prior to 2015 2.4                    
Net reserves for loss and allocated loss adjustment expenses, end of year 953.6                    
Reinsurance | Operating Segments | Casualty | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 126.9 $ 127.0 $ 127.1 $ 127.7 $ 128.3 $ 129.0 $ 130.5 $ 131.4 $ 133.7 $ 126.7  
IBNR loss and ALAE reserves, net 0.9                    
Cumulative net losses and allocated loss adjustment expenses paid 124.9 124.4 123.9 123.2 121.5 119.5 115.5 106.3 92.9 45.3  
Reinsurance | Operating Segments | Casualty | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 119.6 119.9 120.3 121.8 122.2 123.7 128.9 130.0 124.7    
IBNR loss and ALAE reserves, net 0.7                    
Cumulative net losses and allocated loss adjustment expenses paid 117.6 117.0 116.4 115.7 113.3 110.4 103.4 91.8 42.3    
Reinsurance | Operating Segments | Casualty | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 101.7 100.7 100.3 101.0 99.7 101.4 104.3 102.7      
IBNR loss and ALAE reserves, net 4.8                    
Cumulative net losses and allocated loss adjustment expenses paid 91.5 88.8 85.3 80.9 75.6 67.4 57.7 28.2      
Reinsurance | Operating Segments | Casualty | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 165.9 162.3 153.8 151.8 146.3 143.7 140.1        
IBNR loss and ALAE reserves, net 17.7                    
Cumulative net losses and allocated loss adjustment expenses paid 134.3 123.6 110.3 94.4 72.5 54.8 25.8        
Reinsurance | Operating Segments | Casualty | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 211.3 205.6 196.6 191.6 179.7 178.3          
IBNR loss and ALAE reserves, net 35.7                    
Cumulative net losses and allocated loss adjustment expenses paid 154.1 131.1 104.4 75.7 52.4 22.7          
Reinsurance | Operating Segments | Casualty | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 189.1 194.7 194.8 185.7 171.3            
IBNR loss and ALAE reserves, net 44.5                    
Cumulative net losses and allocated loss adjustment expenses paid 124.1 102.9 75.0 44.2 19.7            
Reinsurance | Operating Segments | Casualty | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 139.4 141.6 143.3 144.2              
IBNR loss and ALAE reserves, net 36.2                    
Cumulative net losses and allocated loss adjustment expenses paid 84.2 65.5 44.2 16.5              
Reinsurance | Operating Segments | Casualty | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 287.4 298.3 291.2                
IBNR loss and ALAE reserves, net 138.2                    
Cumulative net losses and allocated loss adjustment expenses paid 100.8 51.2 20.8                
Reinsurance | Operating Segments | Casualty | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 349.7 353.3                  
IBNR loss and ALAE reserves, net 182.2                    
Cumulative net losses and allocated loss adjustment expenses paid 90.3 30.6                  
Reinsurance | Operating Segments | Casualty | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 298.3                    
IBNR loss and ALAE reserves, net 258.5                    
Cumulative net losses and allocated loss adjustment expenses paid 16.3                    
Reinsurance | Operating Segments | Specialty                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 1,043.7                    
IBNR loss and ALAE reserves, net 252.5                    
Cumulative net losses and allocated loss adjustment expenses paid 662.9                    
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024 380.8                    
Net reserves for loss and allocated loss adjustment expenses prior to 2015 (2.2)                    
Net reserves for loss and allocated loss adjustment expenses, end of year 378.6                    
Reinsurance | Operating Segments | Specialty | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 102.6 102.8 102.8 102.7 102.8 103.5 104.9 107.3 110.7 89.9  
IBNR loss and ALAE reserves, net 0.6                    
Cumulative net losses and allocated loss adjustment expenses paid 101.3 101.4 100.6 100.1 100.2 99.7 97.6 93.9 72.5 36.2  
Reinsurance | Operating Segments | Specialty | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 108.3 108.9 108.9 110.1 110.5 110.6 115.3 121.0 123.4    
IBNR loss and ALAE reserves, net 1.0                    
Cumulative net losses and allocated loss adjustment expenses paid 106.5 106.3 105.4 104.4 105.2 103.3 98.7 87.9 28.9    
Reinsurance | Operating Segments | Specialty | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 112.4 113.4 113.9 115.8 117.0 116.8 122.5 117.1      
IBNR loss and ALAE reserves, net 3.9                    
Cumulative net losses and allocated loss adjustment expenses paid 106.4 105.7 104.5 101.5 100.6 96.5 85.6 57.2      
Reinsurance | Operating Segments | Specialty | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 81.9 83.7 88.0 89.7 92.8 91.5 92.7        
IBNR loss and ALAE reserves, net 2.3                    
Cumulative net losses and allocated loss adjustment expenses paid 69.5 69.0 69.9 70.7 69.9 54.4 36.4        
Reinsurance | Operating Segments | Specialty | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 82.1 84.3 85.3 90.5 88.0 88.4          
IBNR loss and ALAE reserves, net 4.5                    
Cumulative net losses and allocated loss adjustment expenses paid 70.9 68.4 65.5 61.0 46.2 25.6          
Reinsurance | Operating Segments | Specialty | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 84.9 94.6 94.6 98.9 102.0            
IBNR loss and ALAE reserves, net 10.8                    
Cumulative net losses and allocated loss adjustment expenses paid 62.2 59.5 54.6 41.1 28.7            
Reinsurance | Operating Segments | Specialty | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 53.0 59.2 60.5 66.1              
IBNR loss and ALAE reserves, net 10.6                    
Cumulative net losses and allocated loss adjustment expenses paid 31.3 29.5 23.5 13.6              
Reinsurance | Operating Segments | Specialty | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 82.3 84.3 84.9                
IBNR loss and ALAE reserves, net 33.1                    
Cumulative net losses and allocated loss adjustment expenses paid 32.8 18.6 8.7                
Reinsurance | Operating Segments | Specialty | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 144.6 152.5                  
IBNR loss and ALAE reserves, net 58.5                    
Cumulative net losses and allocated loss adjustment expenses paid 50.8 20.5                  
Reinsurance | Operating Segments | Specialty | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 191.6                    
IBNR loss and ALAE reserves, net 127.2                    
Cumulative net losses and allocated loss adjustment expenses paid 31.2                    
Reinsurance | Operating Segments | Property Other                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 1,345.2                    
IBNR loss and ALAE reserves, net 102.7                    
Cumulative net losses and allocated loss adjustment expenses paid 1,209.3                    
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024 135.9                    
Net reserves for loss and allocated loss adjustment expenses prior to 2015 0.7                    
Net reserves for loss and allocated loss adjustment expenses, end of year 136.6                    
Reinsurance | Operating Segments | Property Other | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 119.6 119.6 119.8 119.9 119.1 119.7 120.0 117.7 114.7 105.0  
IBNR loss and ALAE reserves, net 0.1                    
Cumulative net losses and allocated loss adjustment expenses paid 119.3 119.2 119.0 118.4 117.1 115.9 111.9 104.6 96.3 43.7  
Reinsurance | Operating Segments | Property Other | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 135.8 135.5 136.1 136.3 135.9 136.6 136.0 132.3 126.2    
IBNR loss and ALAE reserves, net 0.2                    
Cumulative net losses and allocated loss adjustment expenses paid 134.8 134.2 133.6 132.3 130.0 146.0 116.3 92.3 32.4    
Reinsurance | Operating Segments | Property Other | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 266.8 271.6 273.0 275.5 273.8 270.8 258.1 227.6      
IBNR loss and ALAE reserves, net 0.4                    
Cumulative net losses and allocated loss adjustment expenses paid 262.9 258.2 254.4 242.7 235.6 206.5 162.9 49.4      
Reinsurance | Operating Segments | Property Other | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 239.0 243.5 246.2 248.4 251.1 243.9 209.7        
IBNR loss and ALAE reserves, net 4.9                    
Cumulative net losses and allocated loss adjustment expenses paid 230.1 226.8 221.0 208.6 194.4 147.3 55.9        
Reinsurance | Operating Segments | Property Other | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 182.6 184.2 182.4 185.4 184.8 180.4          
IBNR loss and ALAE reserves, net 3.6                    
Cumulative net losses and allocated loss adjustment expenses paid 176.4 171.3 163.1 148.2 121.5 46.6          
Reinsurance | Operating Segments | Property Other | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 138.4 144.3 143.7 145.0 132.8            
IBNR loss and ALAE reserves, net 12.5                    
Cumulative net losses and allocated loss adjustment expenses paid 117.5 114.1 107.4 87.1 40.6            
Reinsurance | Operating Segments | Property Other | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 68.4 70.4 63.9 62.3              
IBNR loss and ALAE reserves, net 20.0                    
Cumulative net losses and allocated loss adjustment expenses paid 45.0 42.6 38.7 22.9              
Reinsurance | Operating Segments | Property Other | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 58.8 59.2 59.2                
IBNR loss and ALAE reserves, net 2.6                    
Cumulative net losses and allocated loss adjustment expenses paid 53.0 31.5 9.7                
Reinsurance | Operating Segments | Property Other | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 66.6 63.3                  
IBNR loss and ALAE reserves, net 12.6                    
Cumulative net losses and allocated loss adjustment expenses paid 50.3 12.7                  
Reinsurance | Operating Segments | Property Other | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 69.2                    
IBNR loss and ALAE reserves, net 45.8                    
Cumulative net losses and allocated loss adjustment expenses paid 20.0                    
Reinsurance | Operating Segments | Property Catastrophe                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 341.0                    
IBNR loss and ALAE reserves, net 127.7                    
Cumulative net losses and allocated loss adjustment expenses paid 187.9                    
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024 153.1                    
Net reserves for loss and allocated loss adjustment expenses prior to 2015 0.1                    
Net reserves for loss and allocated loss adjustment expenses, end of year 153.2                    
Reinsurance | Operating Segments | Property Catastrophe | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
Reinsurance | Operating Segments | Property Catastrophe | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
Reinsurance | Operating Segments | Property Catastrophe | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 25.2 26.8 28.5 28.2 27.2 26.4 32.6 27.6      
IBNR loss and ALAE reserves, net 1.0                    
Cumulative net losses and allocated loss adjustment expenses paid 23.6 22.9 22.0 20.6 20.4 12.0 7.8 1.3      
Reinsurance | Operating Segments | Property Catastrophe | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 4.2 4.1 4.5 4.8 5.7 5.3 12.0        
IBNR loss and ALAE reserves, net 1.2                    
Cumulative net losses and allocated loss adjustment expenses paid 2.9 2.9 2.9 2.7 2.2 1.7 0.4        
Reinsurance | Operating Segments | Property Catastrophe | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 36.0 36.0 39.6 41.9 38.6 37.9          
IBNR loss and ALAE reserves, net 4.1                    
Cumulative net losses and allocated loss adjustment expenses paid 28.5 27.6 26.3 23.4 14.3 0.5          
Reinsurance | Operating Segments | Property Catastrophe | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 56.9 68.1 63.0 69.6 58.1            
IBNR loss and ALAE reserves, net 11.8                    
Cumulative net losses and allocated loss adjustment expenses paid 42.8 41.5 36.4 25.5 7.4            
Reinsurance | Operating Segments | Property Catastrophe | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 55.5 57.0 69.4 67.7              
IBNR loss and ALAE reserves, net 8.2                    
Cumulative net losses and allocated loss adjustment expenses paid 42.6 32.9 29.1 16.1              
Reinsurance | Operating Segments | Property Catastrophe | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 70.2 76.3 84.4                
IBNR loss and ALAE reserves, net 27.9                    
Cumulative net losses and allocated loss adjustment expenses paid 35.5 23.2 7.4                
Reinsurance | Operating Segments | Property Catastrophe | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 22.6 22.4                  
IBNR loss and ALAE reserves, net 11.0                    
Cumulative net losses and allocated loss adjustment expenses paid 4.5 1.2                  
Reinsurance | Operating Segments | Property Catastrophe | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 70.4                    
IBNR loss and ALAE reserves, net 62.5                    
Cumulative net losses and allocated loss adjustment expenses paid 7.5                    
Reinsurance | Operating Segments | Other                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 8.1                    
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 8.1                    
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024 0.0                    
Net reserves for loss and allocated loss adjustment expenses prior to 2015 0.0                    
Net reserves for loss and allocated loss adjustment expenses, end of year 0.0                    
Reinsurance | Operating Segments | Other | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
Reinsurance | Operating Segments | Other | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
Reinsurance | Operating Segments | Other | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.8 0.8 0.8 0.8 0.8 0.8 0.7 0.7      
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.8 0.8 0.8 0.8 0.8 0.6 0.3 0.0      
Reinsurance | Operating Segments | Other | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 3.1 3.1 3.1 3.0 3.0 3.0 2.6        
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 3.1 3.1 3.1 3.0 3.0 2.1 1.0        
Reinsurance | Operating Segments | Other | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 2.8 2.8 2.7 2.5 3.6 3.4          
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 2.8 2.8 2.6 2.5 2.6 1.6          
Reinsurance | Operating Segments | Other | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 1.3 1.4 1.4 1.1 3.1            
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 1.3 1.3 1.0 0.9 0.5            
Reinsurance | Operating Segments | Other | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.1 0.1 0.1 0.2              
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.1 0.1 0.1 0.0              
Reinsurance | Operating Segments | Other | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0                
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0                
Reinsurance | Operating Segments | Other | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0                  
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0                  
Reinsurance | Operating Segments | Other | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0                    
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0                    
Insurance & Services | Operating Segments | Casualty                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   630.6                  
IBNR loss and ALAE reserves, net   503.3                  
Cumulative net losses and allocated loss adjustment expenses paid   88.8                  
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024   541.8                  
Net reserves for loss and allocated loss adjustment expenses prior to 2015   0.0                  
Net reserves for loss and allocated loss adjustment expenses, end of year 541.8                    
Insurance & Services | Operating Segments | Casualty | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 $ 0.0
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Insurance & Services | Operating Segments | Casualty | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
Insurance & Services | Operating Segments | Casualty | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
Insurance & Services | Operating Segments | Casualty | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0 0.0      
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid   0.0 0.0 0.0 0.0 0.0 0.0 0.0      
Insurance & Services | Operating Segments | Casualty | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0        
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid   0.0 0.0 0.0 0.0 0.0 0.0        
Insurance & Services | Operating Segments | Casualty | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   1.0 0.7 0.9 0.8 1.0          
IBNR loss and ALAE reserves, net   0.1                  
Cumulative net losses and allocated loss adjustment expenses paid   0.9 0.4 0.4 0.3 0.0          
Insurance & Services | Operating Segments | Casualty | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   48.8 55.5 51.4 51.4            
IBNR loss and ALAE reserves, net   26.4                  
Cumulative net losses and allocated loss adjustment expenses paid   19.4 10.9 6.9 0.8            
Insurance & Services | Operating Segments | Casualty | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   127.6 131.9 139.9              
IBNR loss and ALAE reserves, net   97.8                  
Cumulative net losses and allocated loss adjustment expenses paid   15.0 3.2 4.7              
Insurance & Services | Operating Segments | Casualty | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   199.1 198.8                
IBNR loss and ALAE reserves, net   152.6                  
Cumulative net losses and allocated loss adjustment expenses paid   38.2 8.9                
Insurance & Services | Operating Segments | Casualty | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   254.1                  
IBNR loss and ALAE reserves, net   226.4                  
Cumulative net losses and allocated loss adjustment expenses paid   15.3                  
Insurance & Services | Operating Segments | Specialty                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   104.6                  
IBNR loss and ALAE reserves, net   67.8                  
Cumulative net losses and allocated loss adjustment expenses paid 32.0                    
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024 72.6                    
Net reserves for loss and allocated loss adjustment expenses prior to 2015 0.0                    
Net reserves for loss and allocated loss adjustment expenses, end of year 72.6                    
Insurance & Services | Operating Segments | Specialty | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 $ 0.0
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
Insurance & Services | Operating Segments | Specialty | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
Insurance & Services | Operating Segments | Specialty | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0      
Insurance & Services | Operating Segments | Specialty | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0 0.0      
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0        
Insurance & Services | Operating Segments | Specialty | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0 0.0        
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0          
Insurance & Services | Operating Segments | Specialty | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   0.0 0.0 0.0 0.0 0.0          
IBNR loss and ALAE reserves, net   0.0                  
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0            
Insurance & Services | Operating Segments | Specialty | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   9.7 10.0 9.0 7.1            
IBNR loss and ALAE reserves, net   1.0                  
Cumulative net losses and allocated loss adjustment expenses paid 8.6 8.4 6.3 0.7              
Insurance & Services | Operating Segments | Specialty | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   22.9 22.1 21.0              
IBNR loss and ALAE reserves, net   7.8                  
Cumulative net losses and allocated loss adjustment expenses paid 15.0 13.6 7.5                
Insurance & Services | Operating Segments | Specialty | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   43.6 29.3                
IBNR loss and ALAE reserves, net   36.6                  
Cumulative net losses and allocated loss adjustment expenses paid 5.3 3.1                  
Insurance & Services | Operating Segments | Specialty | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net   28.4                  
IBNR loss and ALAE reserves, net   22.4                  
Cumulative net losses and allocated loss adjustment expenses paid 3.1                    
Insurance & Services | Operating Segments | Property Other                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 73.1                    
IBNR loss and ALAE reserves, net 39.6                    
Cumulative net losses and allocated loss adjustment expenses paid 19.6                    
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024 53.5                    
Net reserves for loss and allocated loss adjustment expenses prior to 2015 0.0                    
Net reserves for loss and allocated loss adjustment expenses, end of year 53.5                    
Insurance & Services | Operating Segments | Property Other | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
Insurance & Services | Operating Segments | Property Other | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
Insurance & Services | Operating Segments | Property Other | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0      
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0      
Insurance & Services | Operating Segments | Property Other | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0        
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0        
Insurance & Services | Operating Segments | Property Other | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0          
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0          
Insurance & Services | Operating Segments | Property Other | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.7 0.7 1.4 1.4 1.6            
IBNR loss and ALAE reserves, net 0.1                    
Cumulative net losses and allocated loss adjustment expenses paid 0.6 0.6 0.5 0.5 0.4            
Insurance & Services | Operating Segments | Property Other | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 2.6 2.8 2.7 4.1              
IBNR loss and ALAE reserves, net 1.3                    
Cumulative net losses and allocated loss adjustment expenses paid 1.4 1.1 1.0 0.5              
Insurance & Services | Operating Segments | Property Other | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 10.1 11.5 10.3                
IBNR loss and ALAE reserves, net 1.7                    
Cumulative net losses and allocated loss adjustment expenses paid 7.4 5.8 1.5                
Insurance & Services | Operating Segments | Property Other | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 20.0 19.8                  
IBNR loss and ALAE reserves, net 7.2                    
Cumulative net losses and allocated loss adjustment expenses paid 6.4 1.6                  
Insurance & Services | Operating Segments | Property Other | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 39.7                    
IBNR loss and ALAE reserves, net 29.3                    
Cumulative net losses and allocated loss adjustment expenses paid 3.8                    
Insurance & Services | Operating Segments | Property Catastrophe                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 2.0                    
IBNR loss and ALAE reserves, net 1.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.9                    
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024 1.1                    
Net reserves for loss and allocated loss adjustment expenses prior to 2015 0.0                    
Net reserves for loss and allocated loss adjustment expenses, end of year 1.1                    
Insurance & Services | Operating Segments | Property Catastrophe | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  
Insurance & Services | Operating Segments | Property Catastrophe | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0    
Insurance & Services | Operating Segments | Property Catastrophe | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0      
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0      
Insurance & Services | Operating Segments | Property Catastrophe | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0 0.0        
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0 0.0        
Insurance & Services | Operating Segments | Property Catastrophe | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0 0.0          
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0 0.0          
Insurance & Services | Operating Segments | Property Catastrophe | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0 0.0            
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0 0.0            
Insurance & Services | Operating Segments | Property Catastrophe | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.0 0.0 0.0 0.0              
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0 0.0 0.0              
Insurance & Services | Operating Segments | Property Catastrophe | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 1.8 1.8 1.7                
IBNR loss and ALAE reserves, net 0.8                    
Cumulative net losses and allocated loss adjustment expenses paid 0.9 0.3 0.0                
Insurance & Services | Operating Segments | Property Catastrophe | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.1 0.1                  
IBNR loss and ALAE reserves, net 0.1                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0 0.0                  
Insurance & Services | Operating Segments | Property Catastrophe | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 0.1                    
IBNR loss and ALAE reserves, net 0.1                    
Cumulative net losses and allocated loss adjustment expenses paid 0.0                    
Insurance & Services | Operating Segments | A&H                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 1,799.6                    
IBNR loss and ALAE reserves, net 246.2                    
Cumulative net losses and allocated loss adjustment expenses paid 1,513.2                    
Net reserves for loss and allocated loss adjustment expenses from 2015 to 2024 286.4                    
Net reserves for loss and allocated loss adjustment expenses prior to 2015 0.1                    
Net reserves for loss and allocated loss adjustment expenses, end of year 286.5                    
Insurance & Services | Operating Segments | A&H | 2015                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 80.7 80.7 80.7 80.7 80.7 80.7 80.7 81.7 82.6 79.7  
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 80.7 80.5 80.6 80.6 80.6 80.6 80.5 80.0 73.3 $ 37.3  
Insurance & Services | Operating Segments | A&H | 2016                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 82.9 82.8 82.9 82.8 83.2 83.2 84.4 88.0 85.3    
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 82.9 82.1 82.2 82.2 82.5 82.4 81.9 78.0 $ 50.2    
Insurance & Services | Operating Segments | A&H | 2017                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 81.1 81.0 80.8 80.5 80.5 82.2 88.4 94.3      
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 81.1 81.3 81.2 81.1 80.8 80.7 75.3 $ 58.8      
Insurance & Services | Operating Segments | A&H | 2018                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 97.8 97.8 97.7 97.7 98.7 99.8 100.0        
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 97.9 98.3 98.4 98.3 98.1 89.8 $ 66.9        
Insurance & Services | Operating Segments | A&H | 2019                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 141.0 141.2 142.1 142.6 147.5 149.9          
IBNR loss and ALAE reserves, net 0.0                    
Cumulative net losses and allocated loss adjustment expenses paid 141.0 140.6 140.5 139.7 134.0 $ 99.4          
Insurance & Services | Operating Segments | A&H | 2020                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 136.2 136.0 139.6 146.0 147.5            
IBNR loss and ALAE reserves, net 0.1                    
Cumulative net losses and allocated loss adjustment expenses paid 136.3 133.5 133.3 125.2 $ 81.2            
Insurance & Services | Operating Segments | A&H | 2021                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 126.6 127.2 135.3 142.5              
IBNR loss and ALAE reserves, net 2.3                    
Cumulative net losses and allocated loss adjustment expenses paid 124.3 123.5 117.2 $ 85.0              
Insurance & Services | Operating Segments | A&H | 2022                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 247.2 264.5 278.9                
IBNR loss and ALAE reserves, net 10.1                    
Cumulative net losses and allocated loss adjustment expenses paid 234.6 216.6 $ 139.0                
Insurance & Services | Operating Segments | A&H | 2023                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 392.1 404.8                  
IBNR loss and ALAE reserves, net 43.0                    
Cumulative net losses and allocated loss adjustment expenses paid 333.0 $ 205.6                  
Insurance & Services | Operating Segments | A&H | 2024                      
Claims Development [Line Items]                      
Loss and allocated loss adjustment expenses incurred, net 414.0                    
IBNR loss and ALAE reserves, net 190.7                    
Cumulative net losses and allocated loss adjustment expenses paid $ 201.4                    
v3.25.0.1
Loss and loss adjustment expense reserves - Reconciliation of loss development information to loss and loss adjustment expense reserves (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year $ 3,222.0      
Total loss and allocated loss adjustment expenses recoverable 2,315.3 $ 2,295.1 $ 1,376.2 $ 1,215.3
Unallocated loss adjustment expense reserves 65.0      
Other items, net 60.1      
Deferred gains on retroactive reinsurance contracts (8.5) (27.5) 1.0 1.4
Gross reserves for loss and loss adjustment expenses, end of year 5,653.9 $ 5,608.1 $ 5,268.7 $ 4,841.4
Corporate        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 644.5      
Total loss and allocated loss adjustment expenses recoverable 1,265.0      
Reinsurance | Operating Segments | Casualty        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 953.6      
Total loss and allocated loss adjustment expenses recoverable 179.8      
Reinsurance | Operating Segments | Specialty        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 378.6      
Total loss and allocated loss adjustment expenses recoverable 214.8      
Reinsurance | Operating Segments | Property Other        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 136.6      
Total loss and allocated loss adjustment expenses recoverable 72.1      
Reinsurance | Operating Segments | Property Catastrophe        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 153.2      
Total loss and allocated loss adjustment expenses recoverable 46.8      
Insurance & Services | Operating Segments | A&H        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 286.5      
Total loss and allocated loss adjustment expenses recoverable 63.3      
Insurance & Services | Operating Segments | Casualty        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 541.8      
Total loss and allocated loss adjustment expenses recoverable 336.3      
Insurance & Services | Operating Segments | Specialty        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 72.6      
Total loss and allocated loss adjustment expenses recoverable 102.7      
Insurance & Services | Operating Segments | Property Other        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 53.5      
Total loss and allocated loss adjustment expenses recoverable 34.0      
Insurance & Services | Operating Segments | Property Catastrophe        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Net reserves for loss and allocated loss adjustment expenses, end of year 1.1      
Total loss and allocated loss adjustment expenses recoverable $ 0.5      
v3.25.0.1
Loss and loss adjustment expense reserves - Claims duration (Details) - Operating Segments
Dec. 31, 2024
Reinsurance | Casualty  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 13.50%
Year 2 19.40%
Year 3 13.20%
Year 4 11.50%
Year 5 8.30%
Year 6 6.20%
Year 7 3.20%
Year 8 1.10%
Year 9 0.50%
Year 10 0.40%
Reinsurance | Specialty  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 27.50%
Year 2 26.40%
Year 3 15.10%
Year 4 3.90%
Year 5 1.70%
Year 6 0.90%
Year 7 0.70%
Year 8 0.70%
Year 9 0.50%
Year 10 0.00%
Reinsurance | Property Other  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 24.80%
Year 2 40.30%
Year 3 16.10%
Year 4 9.10%
Year 5 1.80%
Year 6 2.80%
Year 7 1.30%
Year 8 1.10%
Year 9 0.30%
Year 10 0.00%
Reinsurance | Property Catastrophe  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 12.30%
Year 2 26.50%
Year 3 16.50%
Year 4 15.00%
Year 5 2.30%
Year 6 3.70%
Year 7 3.10%
Year 8 2.90%
Year 9 0.00%
Year 10 0.00%
Reinsurance | Other  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 38.20%
Year 2 34.20%
Year 3 15.90%
Year 4 7.60%
Year 5 2.60%
Year 6 1.10%
Year 7 0.80%
Year 8 0.80%
Year 9 0.00%
Year 10 0.00%
Insurance & Services | A&H  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 56.90%
Year 2 30.20%
Year 3 6.30%
Year 4 0.40%
Year 5 0.60%
Year 6 0.10%
Year 7 (0.10%)
Year 8 (0.10%)
Year 9 0.40%
Year 10 0.20%
Insurance & Services | Casualty  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 4.70%
Year 2 9.10%
Year 3 8.90%
Year 4 17.00%
Year 5 44.90%
Year 6 71.50%
Year 7 0.00%
Year 8 0.00%
Year 9 0.00%
Year 10 0.00%
Insurance & Services | Specialty  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 13.80%
Year 2 18.10%
Year 3 11.20%
Year 4 1.30%
Year 5 0.00%
Year 6 0.00%
Year 7 0.00%
Year 8 0.00%
Year 9 0.00%
Year 10 0.00%
Insurance & Services | Property Other  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 10.70%
Year 2 29.10%
Year 3 13.30%
Year 4 9.40%
Year 5 0.10%
Year 6 0.00%
Year 7 0.00%
Year 8 0.00%
Year 9 0.00%
Year 10 0.00%
Insurance & Services | Property Catastrophe  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Year 1 (1.90%)
Year 2 21.30%
Year 3 29.50%
Year 4 0.00%
Year 5 0.00%
Year 6 0.00%
Year 7 0.00%
Year 8 0.00%
Year 9 0.00%
Year 10 0.00%
v3.25.0.1
Third party reinsurance - Breakdown of written and earned premiums and loss and loss adjustment expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Premiums written:      
Direct $ 1,824.3 $ 1,678.7 $ 1,403.9
Assumed 1,420.3 1,748.7 2,005.8
Gross premiums written 3,244.6 3,427.4 3,409.7
Ceded (892.5) (989.5) (860.5)
Net premiums written 2,352.1 2,437.9 2,549.2
Premiums earned:      
Direct 1,721.5 1,498.0 1,153.6
Assumed 1,357.0 1,826.0 1,915.2
Gross premiums earned 3,078.5 3,324.0 3,068.8
Ceded (735.0) (897.8) (750.7)
Net premiums earned 2,343.5 2,426.2 2,318.1
Loss and loss adjustment expense:      
Direct 1,070.7 1,008.6 778.0
Assumed 961.5 910.5 1,386.8
Loss and loss adjustment expense incurred 2,032.2 1,919.1 2,164.8
Ceded (663.7) (537.8) (576.4)
Loss and loss adjustment expense incurred, net $ 1,368.5 $ 1,381.3 $ 1,588.4
v3.25.0.1
Third party reinsurance - Narrative (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Insurance [Abstract]        
Loss and loss adjustment expenses recoverable, net $ 2,315.3 $ 2,295.1 $ 1,376.2 $ 1,215.3
v3.25.0.1
Third party reinsurance - Gross and net recoverable amounts by the reinsurer's credit rating and the percentage of total recoverables (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 2,315.3 $ 2,295.1 $ 1,376.2 $ 1,215.3
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 2,315.3 $ 2,295.1    
% of total 100.00% 100.00%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Collateral        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 1,346.3 $ 1,404.8    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Net        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net 969.0 890.3    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | AA        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 195.0 $ 294.5    
% of total 17.90% 24.40%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | AA | Collateral        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 21.8 $ 76.9    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | AA | Net        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net 173.2 217.6    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | A        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 722.7 $ 601.9    
% of total 65.50% 55.10%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | A | Collateral        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 87.8 $ 111.2    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | A | Net        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net 634.9 490.7    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | BBB or lower        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 30.6 $ 202.0    
% of total 0.80% 14.10%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | BBB or lower | Collateral        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 23.0 $ 76.6    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | BBB or lower | Net        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net 7.6 125.4    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Not rated        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 1,367.0 $ 1,196.7    
% of total 15.80% 6.40%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Not rated | Pallas Reinsurance Company Ltd.        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 907.4 $ 1,090.2    
% of total 39.20% 47.50%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Not rated | Clarendon National Insurance Company        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 291.4      
% of total 12.60%      
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Not rated | Collateral        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 1,213.7 $ 1,140.1    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Not rated | Collateral | Pallas Reinsurance Company Ltd.        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net   $ 1,090.2    
% of total 89.90% 96.50%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Not rated | Collateral | Clarendon National Insurance Company        
Ceded Credit Risk [Line Items]        
% of total 102.00%      
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Not rated | Net        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 153.3 $ 56.6    
v3.25.0.1
Third party reinsurance - Five highest gross recoverable amounts by reinsurers (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 2,315.3 $ 2,295.1 $ 1,376.2 $ 1,215.3
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 2,315.3 $ 2,295.1    
% of total 100.00% 100.00%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Not rated        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 1,367.0 $ 1,196.7    
% of total 15.80% 6.40%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Collateralized        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 1,346.3 $ 1,404.8    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Collateralized | Not rated        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net 1,213.7 1,140.1    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Pallas Reinsurance Company Ltd. | Not rated        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 907.4 $ 1,090.2    
% of total 39.20% 47.50%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Pallas Reinsurance Company Ltd. | Collateralized | Not rated        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net   $ 1,090.2    
% of total 89.90% 96.50%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Clarendon National Insurance Company | Not rated        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 291.4      
% of total 12.60%      
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Clarendon National Insurance Company | Collateralized | Not rated        
Ceded Credit Risk [Line Items]        
% of total 102.00%      
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Arch Reinsurance Ltd | A+        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 218.9 $ 169.3    
% of total 9.50% 7.40%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Arch Reinsurance Ltd | Collateralized | A+        
Ceded Credit Risk [Line Items]        
% of total 0.00% 1.00%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | General Insurance Corporation of India | BBB        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net   $ 164.1    
% of total   7.20%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | General Insurance Corporation of India | A-        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 153.8      
% of total 6.60%      
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | General Insurance Corporation of India | Collateralized | BBB        
Ceded Credit Risk [Line Items]        
% of total   27.40%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | General Insurance Corporation of India | Collateralized | A-        
Ceded Credit Risk [Line Items]        
% of total 22.40%      
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Pie Casualty Insurance Company | A-        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net   $ 98.0    
% of total   4.30%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Pie Casualty Insurance Company | Collateralized | A-        
Ceded Credit Risk [Line Items]        
% of total   15.40%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Allianz SE | AA-        
Ceded Credit Risk [Line Items]        
Loss and loss adjustment expenses recoverable, net $ 74.4 $ 94.4    
% of total 3.20% 4.10%    
Loss and loss adjustment expenses recoverable | Reinsurer Concentration Risk | Allianz SE | Collateralized | AA-        
Ceded Credit Risk [Line Items]        
% of total 17.30% 54.00%    
v3.25.0.1
Allowance for expected credit losses - Summary of allowance for expected credit losses (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Receivables [Abstract]        
Insurance and reinsurance balances receivable, net $ 2,054.4 $ 1,966.3    
Loss and loss adjustment expenses recoverable, net 2,315.3 2,295.1 $ 1,376.2 $ 1,215.3
Other assets 87.8 76.8    
Total assets in scope 4,457.5 4,338.2    
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Insurance and reinsurance balances receivable, net $ 2,054.4 1,966.3    
Premiums Receivable | Customer Concentration Risk | One Customer        
Receivables [Abstract]        
Insurance and reinsurance balances receivable, net   234.7    
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Insurance and reinsurance balances receivable, net   $ 234.7    
v3.25.0.1
Allowance for expected credit losses - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Allowance for expected credit losses $ 28.8 $ 28.8  
Current expected credit losses $ (0.6) $ (1.5) $ 12.7
Assets within scope of credit losses | Credit concentration risk | AM Best or S&P      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Concentration risk percentage 67.00%    
Assets within scope of credit losses | Credit concentration risk | AM Best or S&P | AM Best or S&P, rated A- or better      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Concentration risk percentage 94.00%    
v3.25.0.1
Debt and letter of credit facilities - Summary of debt obligations (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Apr. 30, 2024
Dec. 31, 2023
Debt Instrument [Line Items]      
Total debt $ 639.1   $ 786.2
Subordinated Notes      
Debt Instrument [Line Items]      
Debt, at face value 249.2   273.6
Unamortized discount (4.9)   (5.7)
Total debt $ 244.3   $ 267.9
Effective rate 7.90%   7.70%
Senior Notes | 2024 Senior Notes      
Debt Instrument [Line Items]      
Debt, at face value $ 400.0 $ 400.0  
Unamortized discount (5.2)    
Total debt $ 394.8    
Effective rate 7.40% 7.00%  
Senior Notes | 2016 Senior Notes      
Debt Instrument [Line Items]      
Debt, at face value $ 0.0   $ 400.0
Unamortized premium 0.0   3.5
Total debt $ 0.0   $ 403.5
Effective rate 0.00%   4.60%
Senior Notes | 2015 Senior Notes      
Debt Instrument [Line Items]      
Debt, at face value $ 0.0   $ 115.0
Unamortized issuance costs 0.0   (0.2)
Total debt $ 0.0   $ 114.8
Effective rate 0.00%   7.00%
v3.25.0.1
Debt and letter of credit facilities - Narrative (Details)
1 Months Ended 12 Months Ended
Dec. 19, 2024
USD ($)
Feb. 26, 2021
USD ($)
Sep. 22, 2017
USD ($)
Nov. 01, 2016
USD ($)
Apr. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Sep. 22, 2017
SEK (kr)
Debt Instrument [Line Items]                  
Interest expense           $ 48,100,000 $ 45,400,000    
Foreign exchange (gains) losses           10,000,000.0 (34,900,000) $ 66,000,000.0  
Funds withheld           25,500,000 16,200,000    
Interest expense, loss portfolio transfer           4,000,000      
Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Contractual term 4 years 3 years              
Maximum borrowing capacity $ 400,000,000 $ 300,000,000              
Outstanding borrowings           0      
Senior Notes | 2024 Senior Notes                  
Debt Instrument [Line Items]                  
Debt, at face value         $ 400,000,000 $ 400,000,000.0      
Effective rate         7.00% 7.40%      
Debt issue price, percentage         99.60%        
Proceeds from issuance of debt, net of costs         $ 393,900,000        
Interest expense           $ 21,900,000 0    
Senior Notes | 2016 Senior Notes                  
Debt Instrument [Line Items]                  
Debt, at face value           $ 0 $ 400,000,000.0    
Effective rate           0.00% 4.60%    
Debt issue price, percentage       99.20%          
Proceeds from issuance of debt, net of costs       $ 392,400,000          
Face value of debt issued       $ 400,000,000          
Interest rate       4.60%          
Senior Notes | 2015 Senior Notes                  
Debt Instrument [Line Items]                  
Debt, at face value           $ 0 $ 115,000,000.0    
Effective rate           0.00% 7.00%    
Subordinated Notes                  
Debt Instrument [Line Items]                  
Debt, at face value           $ 249,200,000 $ 273,600,000    
Effective rate           7.90% 7.70%    
Debt issue price, percentage     100.00%            
Face value of debt issued     $ 346,100,000           kr 2,750,000,000
Interest expense           $ 20,500,000 $ 20,000,000.0    
Foreign exchange (gains) losses           $ 23,800,000 $ 9,100,000    
v3.25.0.1
Debt and letter of credit facilities - Summary of letter of credit facilities (Details) - Standby letters of credit
$ in Millions
Dec. 31, 2024
USD ($)
Line of Credit Facility [Line Items]  
Issued $ 1,171.7
Cash and Cash Equivalents  
Line of Credit Facility [Line Items]  
Collateral 36.5
Debt securities  
Line of Credit Facility [Line Items]  
Collateral 1,266.8
Committed - Secured letters of credit facilities  
Line of Credit Facility [Line Items]  
Committed Capacity 355.0
Issued 267.1
Committed - Secured letters of credit facilities | Cash and Cash Equivalents  
Line of Credit Facility [Line Items]  
Collateral 17.7
Committed - Secured letters of credit facilities | Debt securities  
Line of Credit Facility [Line Items]  
Collateral 232.9
Uncommitted - Secured letters of credit facilities  
Line of Credit Facility [Line Items]  
Committed Capacity 0.0
Issued 904.6
Uncommitted - Secured letters of credit facilities | Cash and Cash Equivalents  
Line of Credit Facility [Line Items]  
Collateral 18.8
Uncommitted - Secured letters of credit facilities | Debt securities  
Line of Credit Facility [Line Items]  
Collateral $ 1,033.9
v3.25.0.1
Intangible Assets - Identifiable intangible assets (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 26, 2021
Dec. 31, 2024
Dec. 31, 2023
Indefinite-Lived Intangible Assets [Line Items]      
Finite lived intangible assets net balance   $ 93.0  
Identifiable intangible assets net balance   140.8 $ 152.7
Intangible asset impairments   0.0 0.0
Sirius Group      
Indefinite-Lived Intangible Assets [Line Items]      
Identifiable intangible assets gross balance $ 178.8    
Accumulated amortization and dispositions   (38.0) (26.1)
Identifiable intangible assets net balance   140.8 152.7
Sirius Group | Lloyd’s Capacity - Syndicate 1945      
Indefinite-Lived Intangible Assets [Line Items]      
Indefinite lived intangible assets net balance 41.8 41.8 41.8
Sirius Group | Insurance licenses      
Indefinite-Lived Intangible Assets [Line Items]      
Indefinite lived intangible assets net balance $ 7.0 6.0 6.0
Insurance licenses sold   (1.0) (1.0)
Sirius Group | Distribution relationships      
Indefinite-Lived Intangible Assets [Line Items]      
Economic Useful Life 17 years    
Finite lived intangible assets gross balance $ 75.0    
Accumulated amortization and dispositions   (13.9) (7.4)
Finite lived intangible assets net balance   61.1 67.6
Sirius Group | MGA relationships      
Indefinite-Lived Intangible Assets [Line Items]      
Economic Useful Life 13 years    
Finite lived intangible assets gross balance $ 34.0    
Accumulated amortization and dispositions   (16.9) (13.4)
Finite lived intangible assets net balance   17.1 20.6
Sirius Group | Trade name      
Indefinite-Lived Intangible Assets [Line Items]      
Economic Useful Life 16 years    
Finite lived intangible assets gross balance $ 16.0    
Accumulated amortization and dispositions   (2.4) (1.5)
Finite lived intangible assets net balance   13.6 14.5
Sirius Group | Deferred software costs      
Indefinite-Lived Intangible Assets [Line Items]      
Economic Useful Life 5 years    
Finite lived intangible assets gross balance $ 5.0    
Accumulated amortization and dispositions   (3.8) (2.8)
Finite lived intangible assets net balance   $ 1.2 $ 2.2
v3.25.0.1
Intangible Assets - Estimated remaining amortization expense for intangible assets with finite lives (Details)
$ in Millions
Dec. 31, 2024
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2025 $ 11.4
2026 9.9
2027 9.1
2028 8.5
2029 and thereafter 54.1
Total remaining amortization expense $ 93.0
v3.25.0.1
Income taxes - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Operating Loss Carryforwards [Line Items]      
Net deferred tax assets $ 220,800,000 $ 224,900,000  
Provision for taxes related to BEAT 0 0  
Provision for taxes related to GILTI 0 0  
Valuation allowance 100,100,000 112,400,000  
Unrecognized tax benefits 900,000 2,300,000 $ 2,300,000
Unrecognized tax benefits that would impact the effective tax rate 800,000    
Interest expense on unrecognized tax benefits 0 0 $ 100,000
Accrued interest on unrecognized tax benefits 100,000 700,000  
Office of the Tax Commissioner, Bermuda      
Operating Loss Carryforwards [Line Items]      
Net deferred tax assets   $ 100,800,000  
Additional net deferred tax assets recorded 34,600,000    
Alternative minimum tax carryforwards      
Operating Loss Carryforwards [Line Items]      
Tax credit carryforwards 100,000    
U.S.      
Operating Loss Carryforwards [Line Items]      
Net deferred tax assets 50,600,000    
Valuation allowance 2,900,000    
U.S. | Foreign tax credits carryforwards      
Operating Loss Carryforwards [Line Items]      
Tax credit carryforwards 7,900,000    
U.S. | Foreign      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards subject to annual limitation under IRS Code Section 382 19,700,000    
U.S. | Foreign | Expire between 2036 and 2039      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards subject to annual limitation under IRS Code Section 382 9,200,000    
U.S. | Foreign | Do not expire      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards subject to annual limitation under IRS Code Section 382 10,500,000    
Luxembourg      
Operating Loss Carryforwards [Line Items]      
Net deferred tax assets 114,400,000    
Valuation allowance 66,500,000    
Luxembourg | Foreign      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 482,500,000    
Bermuda      
Operating Loss Carryforwards [Line Items]      
Net deferred tax assets 135,500,000    
U.K.      
Operating Loss Carryforwards [Line Items]      
Net deferred tax liabilities 5,200,000    
Valuation allowance 30,700,000    
Sweden      
Operating Loss Carryforwards [Line Items]      
Net deferred tax liabilities 73,400,000    
Sweden | Foreign tax credits carryforwards      
Operating Loss Carryforwards [Line Items]      
Tax credit carryforwards 15,000,000    
Other      
Operating Loss Carryforwards [Line Items]      
Net deferred tax liabilities $ 1,100,000    
v3.25.0.1
Income taxes - Income before income tax by jurisdiction (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Taxes [Line Items]      
Bermuda $ 53.7 $ 21.5 $ (151.7)
Income (loss) before income tax (expense) benefit 233.1 318.7 (422.7)
U.S.      
Income Taxes [Line Items]      
Foreign 89.6 98.6 (47.0)
U.K.      
Income Taxes [Line Items]      
Foreign 4.1 2.7 (9.7)
Sweden      
Income Taxes [Line Items]      
Foreign 86.1 156.7 (174.6)
Luxembourg      
Income Taxes [Line Items]      
Foreign 0.1 38.1 (37.2)
Other      
Income Taxes [Line Items]      
Foreign $ (0.5) $ 1.1 $ (2.5)
v3.25.0.1
Income taxes - Components of income tax expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Current tax (expense) benefit:      
U.S. Federal $ (6.1) $ (17.0) $ 1.6
State (1.1) (1.4) (0.9)
Non-U.S. (12.6) (13.9) (3.2)
Total current tax expense (19.8) (32.3) (2.5)
Deferred tax (expense) benefit:      
U.S. Federal (15.4) (3.7) 20.7
State (1.3) (0.3) 2.0
Non-U.S. 5.8 81.3 16.5
Total deferred tax (expense) benefit (10.9) 77.3 39.2
Total income tax (expense) benefit $ (30.7) $ 45.0 $ 36.7
v3.25.0.1
Income taxes - Effective rate reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Tax Disclosure [Abstract]      
Tax (expense) benefit at the 0% Bermuda statutory rate $ 0.0 $ 0.0 $ 0.0
Differences in taxes resulting from:      
Bermuda Tax Law 28.7 100.8 0.0
Non-Bermuda earnings (39.9) (73.1) 52.9
Foreign currency effects (9.1) 9.1 (10.7)
Non-Taxable/Deductible Income 0.0 7.6 (1.4)
Change in Valuation Allowance 8.9 (4.7) (14.3)
Tax on Safety Reserve (3.1) (2.3) (2.4)
Change in uncertain tax position 1.4 0.0 8.0
Tax rate change (8.4) 0.0 2.7
State taxes expense (0.9) (1.4) (0.7)
Provision-to-return true up (3.9) 11.2 3.9
Non-Deductible expenses (1.9) (0.6) 0.0
Foreign Branches (1.4) (1.3) 0.0
Other, net (1.1) (0.3) (1.3)
Total income tax (expense) benefit $ (30.7) $ 45.0 $ 36.7
v3.25.0.1
Income taxes - Deferred tax assets and liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Non-U.S. net operating loss carryforwards $ 308.1 $ 309.6
Purchase accounting 0.0 2.4
Tax credit carryforwards 23.0 30.5
Unearned premiums 20.0 21.7
U.S. federal net operating loss and capital carryforwards 3.0 11.8
Discounting of loss and loss adjustment expense reserves 18.1 17.5
Intangible assets 84.8 57.0
Unrealized losses on investments 6.6 8.5
Investment basis differences 0.5 7.5
Foreign currency translation on investments 1.5 5.2
Incentive compensation and benefit accruals 3.9 4.3
Deferred interest 3.2 4.2
Allowance for doubtful accounts 4.0 3.7
Other items 7.0 13.3
Total gross deferred tax assets 483.7 497.2
Valuation allowance (100.1) (112.4)
Total adjusted deferred tax asset 383.6 384.8
Deferred tax liabilities:    
Safety reserve 111.0 129.1
Deferred acquisition costs 19.7 23.3
Purchase accounting 27.9 0.0
Other Items 4.2 7.5
Total deferred tax liabilities 162.8 159.9
Net deferred tax assets $ 220.8 $ 224.9
v3.25.0.1
Income taxes - Net operating loss and capital loss carryforwards (Details) - Foreign
$ in Millions
Dec. 31, 2024
USD ($)
Operating Loss Carryforwards [Line Items]  
No expiration date $ 1,422.2
Total 1,504.0
Gross deferred tax asset 311.1
Valuation allowance (96.2)
Net deferred tax asset 214.9
2030-2044  
Operating Loss Carryforwards [Line Items]  
Subject to expiration 81.8
U.S.  
Operating Loss Carryforwards [Line Items]  
No expiration date 10.5
Total 19.7
Gross deferred tax asset 3.0
Valuation allowance 0.0
Net deferred tax asset 3.0
U.S. | 2030-2044  
Operating Loss Carryforwards [Line Items]  
Subject to expiration 9.2
Luxembourg  
Operating Loss Carryforwards [Line Items]  
No expiration date 688.5
Total 761.1
Gross deferred tax asset 181.7
Valuation allowance (66.5)
Net deferred tax asset 115.2
Luxembourg | 2030-2044  
Operating Loss Carryforwards [Line Items]  
Subject to expiration 72.6
Sweden  
Operating Loss Carryforwards [Line Items]  
No expiration date 104.6
Total 104.6
Gross deferred tax asset 21.6
Valuation allowance 0.0
Net deferred tax asset 21.6
Sweden | 2030-2044  
Operating Loss Carryforwards [Line Items]  
Subject to expiration 0.0
U.K.  
Operating Loss Carryforwards [Line Items]  
No expiration date 115.7
Total 115.7
Gross deferred tax asset 29.0
Valuation allowance (29.0)
Net deferred tax asset 0.0
U.K. | 2030-2044  
Operating Loss Carryforwards [Line Items]  
Subject to expiration 0.0
Germany  
Operating Loss Carryforwards [Line Items]  
No expiration date 2.3
Total 2.3
Gross deferred tax asset 0.7
Valuation allowance (0.7)
Net deferred tax asset 0.0
Germany | 2030-2044  
Operating Loss Carryforwards [Line Items]  
Subject to expiration 0.0
Bermuda  
Operating Loss Carryforwards [Line Items]  
No expiration date 500.6
Total 500.6
Gross deferred tax asset 75.1
Valuation allowance 0.0
Net deferred tax asset 75.1
Bermuda | 2030-2044  
Operating Loss Carryforwards [Line Items]  
Subject to expiration $ 0.0
v3.25.0.1
Income taxes - Reconciliation of unrecognized tax benefits (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
Unrecognized Tax Benefits [Roll Forward]  
Beginning balance $ 2.3
Lapse in statute of limitations (1.4)
Ending balance 0.9
Permanent differences  
Unrecognized Tax Benefits [Roll Forward]  
Beginning balance 1.6
Lapse in statute of limitations (0.8)
Ending balance 0.8
Temporary differences  
Unrecognized Tax Benefits [Roll Forward]  
Beginning balance 0.0
Lapse in statute of limitations 0.0
Ending balance 0.0
Interest and penalties  
Unrecognized Tax Benefits [Roll Forward]  
Beginning balance 0.7
Lapse in statute of limitations (0.6)
Ending balance $ 0.1
v3.25.0.1
Shareholders' equity - Common shares issued and outstanding (Details) - shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Movement In Common Stock Issued and Outstanding [Roll Forward]      
Common shares issued, beginning of year (in shares) 168,120,022    
Common shares outstanding, beginning of year (in shares) 168,120,022    
Issuance of common shares upon exercise of options (in shares) 2,035,211    
Common shares issued, end of year (in shares) 116,429,057 168,120,022  
Common shares outstanding, end of year (in shares) 116,429,057 168,120,022  
Common shares      
Movement In Common Stock Issued and Outstanding [Roll Forward]      
Common shares issued, beginning of year (in shares) 168,120,022 162,177,653 161,929,777
Common shares outstanding, beginning of year (in shares) 168,120,022 162,177,653 161,929,777
Shares repurchased (in shares) (54,798,437) 0 (695,047)
Issuance of common shares upon exercise of options (in shares) 2,035,211 385,430 0
Issuance of common shares upon exercise of warrants (in shares) 0 4,025,899 0
Common shares issued, end of year (in shares) 116,429,057 168,120,022 162,177,653
Common shares outstanding, end of year (in shares) 116,429,057 168,120,022 162,177,653
RSAs | Common shares      
Movement In Common Stock Issued and Outstanding [Roll Forward]      
Shares issued/granted, net of forfeitures and shares withheld (in shares) 1,072,261 1,531,040 942,923
v3.25.0.1
Shareholders' equity - Narrative (Details)
$ / shares in Units, $ in Millions
2 Months Ended 12 Months Ended
Feb. 28, 2025
USD ($)
Dec. 30, 2024
USD ($)
Feb. 28, 2025
USD ($)
Dec. 31, 2024
USD ($)
director
period
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
shares
Jul. 31, 2024
USD ($)
Class of Stock [Line Items]              
Common shares authorized (in shares) | shares       300,000,000      
Common shares, par value (in dollars per share) | $ / shares       $ 0.10      
Dividends paid to common shareholders       $ 0.0 $ 0.0 $ 0.0  
Dividends paid to preference shareholders       16.0 $ 16.0 $ 16.0  
Additional authorized amount             $ 250.0
Authorized amount             $ 306.3
Stock repurchase program, remaining authorized amount       $ 181.3      
Securities Purchase Agreement              
Class of Stock [Line Items]              
Payments for the repurchase of warrants and common stock   $ 250.0          
Securities Purchase Agreement | Forecast              
Class of Stock [Line Items]              
Payments for the repurchase of warrants and common stock $ 483.0   $ 733.0        
Common shares              
Class of Stock [Line Items]              
Common shares repurchased and retired (in shares) | shares       54,798,437 0 695,047  
Common shares repurchased and retired       $ 5.5 $ 0.0 $ 0.1  
Common shares | Securities Purchase Agreement              
Class of Stock [Line Items]              
Common shares repurchased and retired (in shares) | shares       54,798,437      
Common shares repurchased and retired       $ 779.0      
Preference shares              
Class of Stock [Line Items]              
Preference shares, shares authorized (in shares) | shares       30,000,000      
Preference shares, par value (in dollars per share) | $ / shares       $ 0.10      
Series B preference shares              
Class of Stock [Line Items]              
Preference shares, shares authorized (in shares) | shares       8,000,000 8,000,000    
Preference shares, par value (in dollars per share) | $ / shares       $ 0.10 $ 0.10    
Preference shares, shares outstanding (in shares) | shares       8,000,000      
Dividend rate       8.00%      
Voting rights triggering event, number of dividend periods not paid | period       6      
Voting rights triggered, number of directors eligible to elect | director       2      
Dividend rate reset period       5 years      
Dividend rate basis spread on variable rate       7.298%      
Each five-year anniversary triggering event, redemption percentage       100.00%      
Rating agency triggering event, redemption percentage       102.00%      
Capital disqualification triggering event, redemption percentage       100.00%      
Tax triggering event, redemption percentage       100.00%      
Dividends paid to preference shareholders       $ 16.0 $ 16.0    
v3.25.0.1
Share-based compensation and employee benefit plans - Share-based compensation narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
period
shares
Dec. 31, 2023
USD ($)
shares
Dec. 31, 2022
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares available for future issuance (in shares) | shares 14,404,393 15,808,431  
Share-based compensation expense $ 18.3 $ 21.4 $ 26.8
Unamortized share compensation expense $ 23.2 $ 23.3  
Unamortized share compensation expense, period of recognition 1 year 8 months 12 days 1 year 9 months 18 days  
Granted (in shares) | shares 0    
Weighted average remaining contractual term for options outstanding 5 years 2 months 12 days 3 years 4 months 24 days  
Weighted average remaining contractual term for options exercisable 5 years 3 years 2 months 12 days  
Aggregate intrinsic value of options outstanding $ 17.4 $ 13.9  
Aggregate intrinsic value of options exercisable 15.5 10.7  
Net proceeds from exercise of options and warrants $ 18.4 $ 3.0  
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
RSUs | Tranche one      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting rights percentage 33.33%    
RSUs | Tranche two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting rights percentage 33.33%    
RSUs | Tranche three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting rights percentage 33.33%    
Performance shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of performance periods | period 4    
v3.25.0.1
Share-based compensation and employee benefit plans - RSU and restricted share award activity (Details)
12 Months Ended
Dec. 31, 2024
$ / shares
shares
RSUs  
Number of non- vested restricted shares  
Beginning of period (in shares) | shares 2,871,686
Granted (in shares) | shares 618,166
Forfeited (in shares) | shares (161,795)
Vested (in shares) | shares (1,548,637)
End of period (in shares) | shares 1,779,420
Weighted average grant date fair value  
Beginning of period (in dollars per share) | $ / shares $ 7.90
Granted (in dollars per share) | $ / shares 12.28
Forfeited (in dollars per share) | $ / shares 12.93
Vested (in dollars per share) | $ / shares 7.89
End of period (in dollars per share) | $ / shares $ 9.33
RSAs  
Number of non- vested restricted shares  
Beginning of period (in shares) | shares 649,527
Granted (in shares) | shares 73,696
Vested (in shares) | shares (590,516)
End of period (in shares) | shares 132,707
Weighted average grant date fair value  
Beginning of period (in dollars per share) | $ / shares $ 7.63
Granted (in dollars per share) | $ / shares 13.05
Vested (in dollars per share) | $ / shares 7.69
End of period (in dollars per share) | $ / shares $ 10.38
v3.25.0.1
Share-based compensation and employee benefit plans - Performance share unit activity (Details) - Performance shares
12 Months Ended
Dec. 31, 2024
$ / shares
shares
Number of non- vested PSUs  
Beginning of period (in shares) 1,990,467
Granted (in shares) 1,214,331
Forfeited (in shares) (334,466)
Vested (in shares) (269,904)
End of period (in shares) 2,600,428
Number of non- vested PSUs probable of vesting  
Beginning of period (in shares) 1,990,467
Granted (in shares) 1,214,331
Forfeited (in shares) (334,466)
Vested (in shares) (269,904)
End of period (in shares) 2,600,428
Weighted average grant date fair value of PSUs probable of vesting  
Beginning of period (in dollars per share) | $ / shares $ 9.61
Granted (in dollars per share) | $ / shares 11.99
Forfeited (in dollars per share) | $ / shares 10.34
Vested (in dollars per share) | $ / shares 9.76
End of period (in dollars per share) | $ / shares $ 10.61
v3.25.0.1
Share-based compensation and employee benefit plans - Valuation assumptions for options (Details)
12 Months Ended
Dec. 31, 2022
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average grant date fair value (in dollars per share) $ 1.93
Options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Dividend yield 0.00%
Risk free interest rate 3.57%
Expected volatility 32.30%
Expected life (in years) 6 years 3 months 18 days
v3.25.0.1
Share-based compensation and employee benefit plans - Options activity (Details)
12 Months Ended
Dec. 31, 2024
$ / shares
shares
Number of options  
Beginning of period (in shares) | shares 4,161,316
Exercised (in shares) | shares (2,035,211)
End of period (in shares) | shares 2,126,105
Number of options, Options exercisable (in shares) | shares 1,911,775
Weighted average exercise price  
Beginning of period (in dollars per share) | $ / shares $ 8.26
Exercised (in dollars per share) | $ / shares 9.19
End of period (in dollars per share) | $ / shares 7.36
Weighted average exercise price, Options exercisable (in dollars per share) | $ / shares $ 7.42
v3.25.0.1
Share-based compensation and employee benefit plans - Defined benefit plans narrative (Details) - SiriusPoint International - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]    
Projected benefit obligation $ 11.3 $ 14.1
Funded (unfunded) status 6.7 5.1
Accumulated benefit obligation 11.5 15.3
Sweden    
Defined Benefit Plan Disclosure [Line Items]    
Funded (unfunded) status $ 6.7 $ 6.5
v3.25.0.1
Share-based compensation and employee benefit plans - Defined contribution plans narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]      
Expenses related to defined contribution plans $ 17.5 $ 14.8 $ 6.1
v3.25.0.1
Earnings per share available to SiriusPoint common shareholders - Computation of basic and diluted earnings per share available to SiriusPoint common shareholders (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Weighted-average number of common shares outstanding:      
Basic number of common shares outstanding (in shares) 166,537,394 163,341,448 160,228,588
Dilutive effect of warrants (in shares) 0 899,249 0
Dilutive effect of Series A preference shares (in shares) 0 1,594,281 0
Diluted number of common shares outstanding (in shares) 169,470,681 169,607,348 160,228,588
Basic earnings (loss) per common share:      
Net income (loss) available to SiriusPoint common shareholders $ 183.9 $ 338.8 $ (402.8)
Net income allocated to SiriusPoint participating common shareholders (7.7) (24.3) 0.0
Net income (loss) allocated to SiriusPoint common shareholders $ 176.2 $ 314.5 $ (402.8)
Basic earnings (loss) per share available to SiriusPoint common shareholders (in dollars per share) $ 1.06 $ 1.93 $ (2.51)
Diluted earnings (loss) per common share:      
Net income (loss) available to SiriusPoint common shareholders $ 183.9 $ 338.8 $ (402.8)
Net income allocated to SiriusPoint participating common shareholders (7.7) (24.3) 0.0
Net income (loss) allocated to SiriusPoint common shareholders $ 176.2 $ 314.5 $ (402.8)
Diluted earnings (loss) per share available to SiriusPoint common shareholders (in dollars per share) $ 1.04 $ 1.85 $ (2.51)
Options      
Weighted-average number of common shares outstanding:      
Dilutive effect of share-based payment awards (in shares) 1,055,916 595,908 0
Restricted share units      
Weighted-average number of common shares outstanding:      
Dilutive effect of share-based payment awards (in shares) 1,877,371 3,176,462 0
v3.25.0.1
Earnings per share available to SiriusPoint common shareholders - Narrative (Details) - shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Options      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares)   2,697,116 4,257,266
Warrants      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares)   26,013,599 31,123,755
RSUs      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 14,741 75,154  
v3.25.0.1
Related party transactions - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Jun. 30, 2022
Feb. 23, 2022
Mar. 01, 2021
Feb. 26, 2021
Jan. 01, 2019
Related Party Transaction [Line Items]                
Gross premiums written $ 3,244,600,000 $ 3,427,400,000 $ 3,409,700,000          
Insurance and reinsurance balances receivable, net 2,054,400,000 1,966,300,000            
Reinsurance balances payable $ 1,781,600,000 1,736,700,000            
Management fees | Third Point LLC, 2020 LPA                
Related Party Transaction [Line Items]                
Fee percentage 1.25%              
Management fees | Third Point LLC, 2022 LPA                
Related Party Transaction [Line Items]                
Fee percentage 1.25%              
Management fees | Third Point LLC, 2022 Venture II LPA                
Related Party Transaction [Line Items]                
Fee percentage       0.75%        
Management fees | Third Point LLC, TPIPS IMA                
Related Party Transaction [Line Items]                
Fee percentage             0.06%  
Management fees | Third Point LLC, 2022 IMA                
Related Party Transaction [Line Items]                
Fee percentage         0.50%      
Advisory fees | Third Point LLC, 2022 IMA                
Related Party Transaction [Line Items]                
Fee amount         $ 1,500,000      
Performance fees | TP GP                
Related Party Transaction [Line Items]                
Fee percentage               20.00%
Performance fees | TP Venture GP                
Related Party Transaction [Line Items]                
Fee percentage           20.00%    
Performance fees | TP Venture GP II                
Related Party Transaction [Line Items]                
Fee percentage       20.00%        
Inventive fees | Third Point LLC, 2022 IMA                
Related Party Transaction [Line Items]                
Fee percentage         15.00%      
Related Party                
Related Party Transaction [Line Items]                
Gross premiums written $ 99,100,000 302,200,000            
Insurance and reinsurance balances receivable, net 127,200,000 61,800,000            
Reinsurance balances payable $ 0 $ 0            
v3.25.0.1
Related party transactions - Investments managed by related parties (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Related Party Transaction [Line Items]    
Investments in related party investment funds, at fair value $ 116.5 $ 105.6
Total investments 5,705.5 6,077.6
Related Party    
Related Party Transaction [Line Items]    
Investments in related party investment funds, at fair value 116.5 105.6
Third Point Optimized Credit Portfolio 595.8 562.0
Total investments 712.3 667.6
Related Party | Asset-backed securities withdrawn as redemption-in-kind    
Related Party Transaction [Line Items]    
Third Point Optimized Credit Portfolio 0.0 0.0
Related Party | Third Point Enhanced LP    
Related Party Transaction [Line Items]    
Investments in related party investment funds, at fair value 87.6 77.5
Related Party | Third Point Venture Offshore Fund I LP    
Related Party Transaction [Line Items]    
Investments in related party investment funds, at fair value 24.0 25.0
Related Party | Third Point Venture Offshore Fund II LP    
Related Party Transaction [Line Items]    
Investments in related party investment funds, at fair value $ 4.9 $ 3.1
v3.25.0.1
Related party transactions - Summary of management and performance fees (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Related Party Transaction [Line Items]      
Total management and performance fees to related parties $ 5.4 $ 6.1 $ 6.1
Management and advisory fees      
Related Party Transaction [Line Items]      
Total management and performance fees to related parties 4.8 5.2 7.3
Performance fees      
Related Party Transaction [Line Items]      
Total management and performance fees to related parties $ 0.6 $ 0.9 $ (1.2)
v3.25.0.1
Commitments and contingencies - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended 32 Months Ended
Feb. 26, 2023
Feb. 26, 2021
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Nov. 05, 2023
Related Party Transaction [Line Items]            
Operating lease expense     $ 10.4 $ 10.3 $ 12.8  
Dividends paid to preference shareholders     16.0 16.0 16.0  
Liability-classified capital instruments     0.0 67.3    
Loss on settlement and change in fair value of liability-classified capital instruments     148.5 59.4 (27.4)  
Number of private warrants exercised (in shares)           5,418,434
Payments for settlement of financial instruments subject to mandatory redemption     99.2 38.5 0.0  
Series A preference shares            
Related Party Transaction [Line Items]            
Liability-classified capital instruments       37.6    
Merger warrants            
Related Party Transaction [Line Items]            
Liability-classified capital instruments       29.7    
Loss on settlement and change in fair value of liability-classified capital instruments     25.9      
CVRs            
Related Party Transaction [Line Items]            
Payments for settlement of financial instruments subject to mandatory redemption $ 38.5          
Liability-classified capital instruments | Series A preference shares            
Related Party Transaction [Line Items]            
Gains (losses) from the change in fair value     (90.7) (35.8) 18.6  
Liability-classified capital instruments | Merger warrants            
Related Party Transaction [Line Items]            
Gains (losses) from the change in fair value       $ (15.0) $ 17.8  
Sirius Group | Series A preference shares            
Related Party Transaction [Line Items]            
Dividends paid to preference shareholders     $ 0.0      
Sirius Group | Series A preference shares            
Related Party Transaction [Line Items]            
Par value (in dollars per share)   $ 0.10        
Common Shares issued by SiriusPoint (in shares)   11,720,987        
Guy Carpenter & Company | Gross premiums written | Credit concentration risk            
Related Party Transaction [Line Items]            
Concentration risk percentage       12.10% 13.00%  
Aon Corporation | Gross premiums written | Credit concentration risk            
Related Party Transaction [Line Items]            
Concentration risk percentage         18.30%  
v3.25.0.1
Commitments and contingencies - Lease balances (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]    
Operating lease right-of-use assets $ 22.8 $ 25.6
Operating lease liabilities $ 24.5 $ 28.4
Weighted average lease term (years) 5 years 2 months 12 days 4 years 1 month 6 days
Weighted average discount rate 3.00% 2.90%
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Other assets Other assets
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Accounts payable, accrued expenses and other liabilities Accounts payable, accrued expenses and other liabilities
v3.25.0.1
Commitments and contingencies - Future minimum rental commitments (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]    
2025 $ 6.0  
2026 5.2  
2027 4.3  
2028 4.7  
2029 and thereafter 5.9  
Total future annual minimum rental payments 26.1  
Less: present value discount (1.6)  
Total lease liability $ 24.5 $ 28.4
v3.25.0.1
Statutory requirements - Narrative (Details)
£ in Millions, kr in Millions, $ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
member
subsidiary
Dec. 31, 2024
GBP (£)
Dec. 31, 2024
SEK (kr)
Dec. 31, 2023
USD ($)
Dec. 31, 2024
SEK (kr)
member
subsidiary
Statutory Accounting Practices [Line Items]          
Dividends declared $ 370.9       kr 4,055.5
Bermuda          
Statutory Accounting Practices [Line Items]          
Liquidity ratio, minimum percentage required 75.00%       75.00%
Statutory maximum percentage of prior year statutory capital and surplus available for dividend payments without approval 25.00%       25.00%
Number of members of the Board of Directors required to approve dividend payments in excess of the maximum percentage | member 2       2
Amount available for dividend payments without regulatory approval $ 712.7     $ 810.0  
United Kingdom          
Statutory Accounting Practices [Line Items]          
Lloyds approved net capacity 180.4 £ 144.0      
Sweden | SiriusPoint International          
Statutory Accounting Practices [Line Items]          
Statutory net income 146.9     152.0  
Amount available for dividend payments 334.5     628.1  
Dividends paid 306.0   kr 3,335.4    
Safety Reserve 521.0       kr 5,700.0
Deferred tax liability related to the Safety Reserve, payable if failing to maintain prescribed levels of premium writings and loss reserves 107.3        
U.S. | SiriusPoint America          
Statutory Accounting Practices [Line Items]          
Amount available for dividend payments without regulatory approval 63.9     62.6  
Statutory net income 41.2     51.1  
Statutory surplus 639.4     626.9  
Earned surplus $ 70.0     $ 72.0  
Bermuda          
Statutory Accounting Practices [Line Items]          
Number of insurance subsidiaries | subsidiary 2       2
v3.25.0.1
Statutory requirements - Summary of statutory information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Bermuda | SiriusPoint Bermuda    
Statutory Accounting Practices [Line Items]    
Estimated statutory capital and surplus   $ 3,639.7
Required statutory economic capital and surplus   1,239.9
Statutory net income $ 381.5 416.8
Bermuda | Alstead Re    
Statutory Accounting Practices [Line Items]    
Estimated statutory capital and surplus   5.3
Required statutory economic capital and surplus   2.4
Statutory net income 0.2 0.7
U.S. | SiriusPoint Ltd.    
Statutory Accounting Practices [Line Items]    
Estimated statutory capital and surplus   3,226.7
Required statutory economic capital and surplus   1,264.5
U.S. | SiriusPoint America    
Statutory Accounting Practices [Line Items]    
Estimated statutory capital and surplus 639.4 626.9
Required statutory economic capital and surplus 192.0 177.0
Statutory net income 41.2 51.1
U.S. | SiriusPoint Specialty    
Statutory Accounting Practices [Line Items]    
Estimated statutory capital and surplus 78.3 72.5
Required statutory economic capital and surplus 14.7 9.7
Statutory net income 3.9 15.0
U.S. | Oakwood    
Statutory Accounting Practices [Line Items]    
Estimated statutory capital and surplus 40.7 40.0
Required statutory economic capital and surplus 0.3 0.3
Statutory net income $ 0.7 $ 0.6
v3.25.0.1
Subsequent events (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Subsequent Event [Line Items]        
Catastrophe losses   $ 54.8 $ 24.8 $ 137.9
Subsequent event | Forecast | Minimum        
Subsequent Event [Line Items]        
Catastrophe losses $ 60.0      
Subsequent event | Forecast | Maximum        
Subsequent Event [Line Items]        
Catastrophe losses $ 70.0      
v3.25.0.1
Schedule I - Summary of Investments - Other than Investments in Related Parties (Details)
$ in Millions
Dec. 31, 2024
USD ($)
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost $ 5,523.6
Fair value 5,488.3
Balance sheet value 5,488.3
Debt securities, available for sale  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 5,143.8
Fair value 5,131.0
Balance sheet value 5,131.0
Debt securities, trading  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 187.3
Fair value 162.2
Balance sheet value 162.2
Asset-backed securities | Debt securities, available for sale  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 1,142.7
Fair value 1,149.7
Balance sheet value 1,149.7
Asset-backed securities | Debt securities, trading  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 54.7
Fair value 53.1
Balance sheet value 53.1
Residential mortgage-backed securities | Debt securities, available for sale  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 985.8
Fair value 973.8
Balance sheet value 973.8
Residential mortgage-backed securities | Debt securities, trading  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 56.4
Fair value 48.7
Balance sheet value 48.7
Corporate debt securities | Debt securities, available for sale  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 1,905.2
Fair value 1,899.9
Balance sheet value 1,899.9
Corporate debt securities | Debt securities, trading  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 15.1
Fair value 4.6
Balance sheet value 4.6
U.S. government and government agency | Debt securities, available for sale  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 861.0
Fair value 859.0
Balance sheet value 859.0
U.S. government and government agency | Debt securities, trading  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 4.3
Fair value 4.0
Balance sheet value 4.0
Non-U.S. government and government agency | Debt securities, available for sale  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 24.9
Fair value 24.1
Balance sheet value 24.1
Total short-term investments  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 95.3
Fair value 95.8
Balance sheet value 95.8
Other long-term investments  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 97.2
Fair value 99.3
Balance sheet value 99.3
Commercial mortgage-backed securities | Debt securities, available for sale  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 224.2
Fair value 224.5
Balance sheet value 224.5
Commercial mortgage-backed securities | Debt securities, trading  
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]  
Cost or amortized cost 56.8
Fair value 51.8
Balance sheet value $ 51.8
v3.25.0.1
Schedule II - Condensed Financial Information of Registrant - Balance Sheets (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Assets    
Total investments $ 5,705.5 $ 6,077.6
Cash and cash equivalents 682.0 969.2
Deferred tax asset 297.0 293.6
Other assets 270.7 175.9
Total assets 12,524.9 12,871.5
Liabilities    
Accounts payable, accrued expenses and other liabilities 269.2 278.1
Liability-classified capital instruments 0.0 67.3
Share repurchase liability 483.0 0.0
Debt 639.1 786.2
Total liabilities 10,586.1 10,340.9
Shareholders’ equity    
Common shares 11.6 16.8
Additional paid-in capital 945.0 1,693.0
Retained earnings 784.9 601.0
Accumulated other comprehensive loss (4.1) 3.1
Shareholders’ equity attributable to SiriusPoint shareholders 1,937.4 2,513.9
Total liabilities, noncontrolling interests and shareholders’ equity 12,524.9 12,871.5
Series B preference shares    
Shareholders’ equity    
Series B preference shares 200.0 200.0
Parent Company    
Assets    
Total investments 0.2 1.5
Cash and cash equivalents 14.2 12.3
Investment in subsidiaries 2,864.7 3,294.4
Deferred tax asset 75.1 46.0
Amounts due from affiliates 112.6 16.1
Other assets 7.1 7.1
Total assets 3,073.9 3,377.4
Liabilities    
Accounts payable, accrued expenses and other liabilities 14.4 10.0
Liability-classified capital instruments 0.0 67.3
Share repurchase liability 483.0 0.0
Debt 639.1 786.2
Total liabilities 1,136.5 863.5
Shareholders’ equity    
Common shares 11.6 16.8
Additional paid-in capital 945.0 1,693.0
Retained earnings 784.9 601.0
Accumulated other comprehensive loss (4.1) 3.1
Shareholders’ equity attributable to SiriusPoint shareholders 1,937.4 2,513.9
Total liabilities, noncontrolling interests and shareholders’ equity 3,073.9 3,377.4
Parent Company | Series B preference shares    
Shareholders’ equity    
Series B preference shares $ 200.0 $ 200.0
v3.25.0.1
Schedule II - Condensed Financial Information of Registrant - Statements of Income (Loss) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Revenues      
Net investment income and net realized and unrealized investment gains (losses) $ 224.6 $ 272.7 $ (322.7)
Other revenues 184.2 97.8 82.8
Loss on settlement and change in fair value of liability-classified capital instruments (148.5) (59.4) 27.4
Total revenues 2,603.8 2,737.3 2,105.6
Expenses      
Net corporate and other expenses 232.1 258.2 312.8
Interest expense 69.6 64.1 38.6
Foreign exchange (gains) losses (10.0) 34.9 (66.0)
Total expenses 2,370.7 2,418.6 2,528.3
Income (loss) before income tax (expense) benefit 233.1 318.7 (422.7)
Income tax benefit (30.7) 45.0 36.7
Net income (loss) available to SiriusPoint 199.9 354.8 (386.8)
Dividends on Series B preference shares (16.0) (16.0) (16.0)
Net income (loss) available to SiriusPoint common shareholders, basic 183.9 338.8 (402.8)
Net income (loss) available to SiriusPoint common shareholders, diluted 183.9 338.8 (402.8)
Parent Company      
Revenues      
Net investment income and net realized and unrealized investment gains (losses) (0.8) (3.5) 6.4
Other revenues 4.8 (0.4) 3.2
Loss on settlement and change in fair value of liability-classified capital instruments (148.5) (59.4) 27.4
Equity in earnings (losses) of subsidiaries 381.5 471.6 (360.2)
Total revenues 237.0 408.3 (323.2)
Expenses      
Net corporate and other expenses 39.5 45.2 64.9
Interest expense 50.9 45.2 38.6
Foreign exchange (gains) losses (24.2) 9.1 (38.1)
Total expenses 66.2 99.5 65.4
Income (loss) before income tax (expense) benefit 170.8 308.8 (388.6)
Income tax benefit 29.1 46.0 1.8
Net income (loss) available to SiriusPoint 199.9 354.8 (386.8)
Dividends on Series B preference shares (16.0) (16.0) (16.0)
Net income (loss) available to SiriusPoint common shareholders, basic 183.9 338.8 (402.8)
Net income (loss) available to SiriusPoint common shareholders, diluted $ 183.9 $ 338.8 $ (402.8)
v3.25.0.1
Schedule II - Condensed Financial Information of Registrant - Statements of Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Comprehensive income (loss)      
Net income (loss) available to SiriusPoint $ 199.9 $ 354.8 $ (386.8)
Other comprehensive income (loss)      
Change in foreign currency translation adjustment 1.1 1.1 (5.0)
Unrealized gains (losses) from debt securities held as available for sale investments 1.3 38.9 (42.5)
Comprehensive income (loss) available to SiriusPoint 192.7 402.9 (431.6)
Parent Company      
Comprehensive income (loss)      
Net income (loss) available to SiriusPoint 199.9 354.8 (386.8)
Other comprehensive income (loss)      
Change in foreign currency translation adjustment 1.1 1.1 (5.0)
Unrealized gains (losses) from debt securities held as available for sale investments 1.3 38.9 (42.5)
Reclassifications from accumulated other comprehensive income (loss) (9.6) 8.1 2.7
Total other comprehensive income (loss) (7.2) 48.1 (44.8)
Comprehensive income (loss) available to SiriusPoint $ 192.7 $ 402.9 $ (431.6)
v3.25.0.1
Schedule II - Condensed Financial Information of Registrant - Statements of Cash Flows (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Operating activities      
Net income (loss) available to SiriusPoint $ 199.9 $ 354.8 $ (386.8)
Adjustments to reconcile net income available to SiriusPoint to net cash provided by operating activities:      
Share compensation 20.7 21.4 30.5
Net realized and unrealized loss on investments and derivatives 88.7 5.9 207.6
Amortization of premium and accretion of discount, net (61.2) (67.1) (17.2)
Change in fair value of liability-classified capital instruments 31.9 59.4 (27.4)
Other items, net (42.4) 23.7 (28.0)
Changes in assets and liabilities:      
Deferred tax asset 11.2 (84.4) (53.9)
Other assets (110.0) (28.8) (36.9)
Accounts payable, accrued expenses and other liabilities (8.9) 11.5 36.8
Net cash provided by operating activities 74.7 581.3 293.3
Investing activities      
Net cash provided by (used in) investing activities 343.6 (332.2) (1,304.3)
Financing activities      
Settlement of liability-classified capital instruments (99.2) (38.5) 0.0
Net proceeds from exercise of options and warrants 18.4 27.8 0.0
Cash dividends paid to preference shareholders (16.0) (16.0) (16.0)
Taxes paid on withholding shares (9.8) (11.5) (7.1)
Purchases of SiriusPoint common shares under share repurchase program (299.7) 0.0 (5.0)
Payment of redemption of debt (517.9) 0.0 0.0
Proceeds from issuance of debt, net of costs 393.9 0.0 0.0
Net cash used in financing activities (625.0) (61.5) (23.7)
Net increase (decrease) in cash, cash equivalents and restricted cash (206.7) 187.6 (1,034.7)
Cash, cash equivalents and restricted cash at beginning of year 1,101.3 913.7 1,948.4
Cash, cash equivalents and restricted cash at end of year 894.6 1,101.3 913.7
Parent Company      
Operating activities      
Net income (loss) available to SiriusPoint 199.9 354.8 (386.8)
Adjustments to reconcile net income available to SiriusPoint to net cash provided by operating activities:      
Equity in (earnings) losses of subsidiaries (381.5) (471.6) 360.2
Dividend received by parent 714.0 101.2 125.0
Share compensation 20.7 21.4 30.6
Net realized and unrealized loss on investments and derivatives 1.3 3.5 (6.4)
Amortization of premium and accretion of discount, net 0.7 17.3 (0.5)
Change in fair value of liability-classified capital instruments 0.0 59.4 (27.4)
Change in fair value of liability-classified capital instruments 31.9 0.0 0.0
Other items, net (23.6) (8.5) (38.0)
Changes in assets and liabilities:      
Deferred tax asset (29.1) (46.0) 0.0
Other assets 0.0 5.7 (0.1)
Accounts payable, accrued expenses and other liabilities 4.4 (5.3) (2.5)
Amounts due to affiliates (6.5) (1.4) (28.3)
Net cash provided by operating activities 532.2 30.5 25.8
Investing activities      
Proceeds from sales and maturities of investments 0.0 14.4 0.0
Net cash provided by (used in) investing activities 0.0 14.4 0.0
Financing activities      
Settlement of liability-classified capital instruments (99.2) (38.5) 0.0
Net proceeds from exercise of options and warrants 18.4 27.8 0.0
Cash dividends paid to preference shareholders (16.0) (16.0) (16.0)
Taxes paid on withholding shares (9.8) (11.5) (7.1)
Purchases of SiriusPoint common shares under share repurchase program (299.7) 0.0 (5.0)
Payment of redemption of debt (517.9) 0.0 0.0
Proceeds from issuance of debt, net of costs 393.9 0.0 0.0
Net cash used in financing activities (530.3) (38.2) (28.1)
Net increase (decrease) in cash, cash equivalents and restricted cash 1.9 6.7 (2.3)
Cash, cash equivalents and restricted cash at beginning of year 12.3 5.6 7.9
Cash, cash equivalents and restricted cash at end of year $ 14.2 $ 12.3 $ 5.6
v3.25.0.1
Schedule III - Supplementary Insurance Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]      
Deferred acquisition costs, net $ 327.5 $ 308.9 $ 294.9
Loss and loss adjustment expense reserves 5,653.9 5,608.1 5,268.7
Unearned premium 1,639.2 1,627.3 1,521.1
Net premiums earned 2,343.5 2,426.2 2,318.1
Net investment income and net realized and unrealized investment gains (losses) 224.6 272.7 (322.7)
Loss and loss adjustment expenses incurred, net 1,368.5 1,381.3 1,588.4
Acquisition costs, net 516.9 472.7 461.9
Other underwriting expenses 181.7 196.3 184.5
Net premiums written 2,352.1 2,437.9 2,549.2
Corporate & Eliminations      
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]      
Deferred acquisition costs, net 0.1 19.0 0.1
Loss and loss adjustment expense reserves 1,939.1 1,419.3 688.0
Unearned premium 0.4 36.7 0.4
Net premiums earned 144.4 145.6 18.2
Net investment income and net realized and unrealized investment gains (losses) 224.6 272.7 (322.7)
Loss and loss adjustment expenses incurred, net 100.1 75.6 13.8
Acquisition costs, net (47.7) (75.0) (121.6)
Other underwriting expenses 15.6 19.3 7.9
Net premiums written 11.2 94.2 3.6
Reinsurance | Operating Segments      
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]      
Deferred acquisition costs, net 156.6 159.0 175.7
Loss and loss adjustment expense reserves 2,185.4 2,459.1 3,512.2
Unearned premium 709.8 663.6 843.9
Net premiums earned 1,045.1 1,031.4 1,213.1
Net investment income and net realized and unrealized investment gains (losses) 0.0 0.0 0.0
Loss and loss adjustment expenses incurred, net 554.3 490.3 855.9
Acquisition costs, net 279.9 252.2 310.3
Other underwriting expenses 86.1 82.7 113.8
Net premiums written 1,104.7 1,061.0 1,199.6
Insurance & Services | Operating Segments      
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]      
Deferred acquisition costs, net 170.8 130.9 119.1
Loss and loss adjustment expense reserves 1,529.4 1,729.7 1,068.5
Unearned premium 929.0 927.0 676.8
Net premiums earned 1,154.0 1,249.2 1,086.8
Net investment income and net realized and unrealized investment gains (losses) 0.0 0.0 0.0
Loss and loss adjustment expenses incurred, net 714.1 815.4 718.7
Acquisition costs, net 284.7 295.5 273.2
Other underwriting expenses 80.0 94.3 62.8
Net premiums written $ 1,236.2 $ 1,282.7 $ 1,346.0
v3.25.0.1
Schedule IV - Reinsurance (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]      
Direct premiums written $ 1,824.3 $ 1,678.7 $ 1,403.9
Assumed from other companies 1,420.3 1,748.7 2,005.8
Ceded to other companies 892.5 989.5 860.5
Net premiums written $ 2,352.1 $ 2,437.9 $ 2,549.2
Percentage of amount assumed to net 60.40% 71.70% 78.70%
v3.25.0.1
Schedule VI - Supplementary Information for Property-Casualty Insurance Operations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Abstract]        
Deferred acquisition costs, net $ 327.5 $ 308.9 $ 294.9  
Loss and loss adjustment expense reserves 5,653.9 5,608.1 5,268.7 $ 4,841.4
Unearned premium reserves 1,639.2 1,627.3 1,521.1  
Net premiums earned 2,343.5 2,426.2 2,318.1  
Net investment income and net realized and unrealized investment gains (losses) 224.6 272.7 (322.7)  
Loss and loss expenses incurred related to current year 1,476.4 1,555.5 1,609.7  
Loss and loss expenses incurred related to prior year (107.9) (174.2) (21.3)  
Acquisition costs, net 516.9 472.7 461.9  
Net paid losses and loss expenses 1,035.2 1,184.7 1,255.3  
Net premiums written $ 2,352.1 $ 2,437.9 $ 2,549.2  
v3.25.0.1
Label Element Value
Interest and Penalties [Member]  
Unrecognized Tax Benefits us-gaap_UnrecognizedTaxBenefits $ 700,000
Permanent Differences [Member]  
Unrecognized Tax Benefits us-gaap_UnrecognizedTaxBenefits 1,600,000
Temporary Differences [Member]  
Unrecognized Tax Benefits us-gaap_UnrecognizedTaxBenefits $ 0