3,395

827

Private equities

13,362

12,355

Total investments (refer to Note 3 for balances associated with variable interest entities (VIEs))

5,583

1,341

129,961

113,551

Cash, including restricted cash $192 and $115 (refer to Note 3 for balances associated with VIEs)

2,778

2,127

1,469

1,523

Insurance and reinsurance balances receivable, net of valuation allowance - $53 and $52

1,040

941

13,907

11,933

Reinsurance recoverable on losses and loss expenses, net of valuation allowance - $370 and $351

19,750

^[1]

18,859

^[2]

^[1],[2]

315

302

6,856

6,031

3,675

3,702

Goodwill

19,554

16,228

Other intangible assets

6,844

5,441

3,514

3,136

188

2,507

5,306

5,190

7,591

7,546

222,748

199,017

Liabilities

79,705

75,747

22,684

19,713

13,109

10,476

Policyholders' account balances

770

800

7,178

3,140

Separate account liabilities

5,306

5,190

Securities lending payable

8,481

7,780

1,469

1,523

Accounts payable, accrued expenses, and other liabilities

8,422

7,148

Repurchase agreements (refer to Note 3 for balances associated with VIEs)

759

377

2,617

1,419

Short-term debt

700

475

Long-term debt

13,736

14,402

Trust preferred securities

308

Commitments and contingencies (refer to Note 13)

165,244

148,498

Shareholders’ equity

Common Shares (CHF 0.50 and 24.15 par value; 431,451,586 and 446,376,614 shares issued; 407,984,339 and 414,594,856 shares outstanding)

241

10,346

Common Shares in treasury (23,467,247 and 31,781,758 shares)

(3,747)

(5,113)

Additional paid-in capital

15,887

7,166

Accumulated other comprehensive income (loss) (AOCI)

51,510

48,305

(11,518)

(10,185)

Total Chubb shareholders’ equity

52,373

50,519

Noncontrolling interests (refer to Note 3 for balances associated with VIEs)

5,131

0

Total shareholders' equity

57,504

50,519

Total liabilities and shareholders’ equity

$ 222,748

$ 199,017

[1]	Net of valuation allowance for uncollectible reinsurance.
[2]	Net of valuation allowance for uncollectible reinsurance.

Consolidated Balance Sheets (Parentheticals) (Unaudited) $ in Millions	Sep. 30, 2023 USD ($) shares	Dec. 31, 2022 USD ($) shares
Statement of Financial Position [Abstract]
Short-term investments amortized cost	$ 5,455	$ 4,962
Fixed maturities, available-for-sale, valuation allowance	158	169
Fixed maturities, available-for-sale, at amortized cost	109,355	93,355
Fixed maturities, held-to-maturity, valuation allowance	0	34
Fixed maturities, held-to-maturity, fair value	0	8,439
Restricted cash	192	115
Premium Receivable, Allowance for Credit Loss	53	52
Valuation allowance for uncollectible reinsurance	$ 370	$ 351
Common Shares, shares issued \| shares	431,451,586	446,376,614
Common Shares, shares outstanding \| shares	407,984,339	414,594,856
Treasury Stock, Common, Shares \| shares	23,467,247	31,781,758

Consolidated Statements Of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues
Net premiums written	$ 13,104	$ 12,012	$ 35,765	$ 31,494
Increase in unearned premiums	(430)	(482)	(1,950)	(1,678)
Net premiums earned	12,674	11,530	33,815	29,816
Net investment income	1,314	979	3,566	2,689
Net realized gains (losses)	(103)	(456)	(484)	(936)
Market risk benefits gains (losses)	(32)	69	(154)	85
Total revenues	13,853	12,122	36,743	31,654
Expenses
Losses and loss expenses	7,106	7,063	17,937	16,833
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	938	707	2,565	1,441
Policy acquisition costs	2,178	1,970	6,142	5,415
Administrative expenses	1,060	883	2,959	2,479
Interest expense	174	150	499	416
Other (income) expense	(154)	202	(550)	(9)
Amortization of purchased intangibles	84	69	226	211
Cigna integration expenses	14	23	51	26
Total expenses	11,400	11,067	29,829	26,812
Income before income tax	2,453	1,055	6,914	4,842
Income tax expense	413	263	1,189	907
Net Income	2,040	792	5,725	3,935
Net loss attributable to noncontrolling interests	(3)	0	(3)	0
Net income attributable to Chubb	2,043	792	5,728	3,935
Other comprehensive income (loss):
Change in unrealized depreciation	(2,170)	(3,045)	(1,578)	(12,041)
Current discount rate on future policy benefits	683	479	497	1,546
Instrument-specific credit risk on market risk benefits	(5)	8	3	48
Cumulative foreign currency translation adjustment	(317)	(942)	(279)	(1,631)
Other, including postretirement benefit liability adjustment	37	(59)	52	(35)
Other comprehensive loss, before income tax	(1,772)	(3,559)	(1,305)	(12,113)
Income tax (expense) benefit related to OCI items	0	109	(104)	1,071
Other comprehensive loss	(1,772)	(3,450)	(1,409)	(11,042)
Comprehensive income (loss)	268	(2,658)	4,316	(7,107)
Comprehensive loss attributable to noncontrolling interests	(79)	0	(79)	0
Comprehensive income (loss) attributable to Chubb	$ 347	$ (2,658)	$ 4,395	$ (7,107)
Earnings per share
Basic earnings per share attributable to Chubb	$ 4.99	$ 1.90	$ 13.90	$ 9.34
Diluted earnings per share attributable to Chubb	$ 4.95	$ 1.89	$ 13.79	$ 9.26

Consolidated Statements Of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock [Member]	Treasury Stock, Common	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)							$ 0
Balance – beginning of period, net of tax at Dec. 31, 2021		$ 10,985	$ (7,464)	$ 8,478	$ 47,403	$ (1,074)
CB_Par value reduction		0		0
Treasury Stock, Retired, Cost Method, Amount		(639)	4,983		(4,344)
Common Shares repurchased			(2,815)
Net shares issued under employee share-based compensation plans			318	(185)
Exercise of stock options				(35)
Share-based compensation expense				205
Funding of dividends declared to Retained earnings				(1,034)
Net loss attributable to Chubb	$ 3,935				3,935
Funding of dividends declared from Additional paid-in capital					1,034
Dividends declared on Common Shares					(1,034)
Other Comprehensive Income (Loss), Net of Tax	(11,042)					(11,042)
Balance – end of period, net of tax at Sep. 30, 2022	47,675	10,346	(4,978)	7,429	46,994	(12,116)
Net loss attributable to noncontrolling interests	0						0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest							0
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)							0
Balance – beginning of period, net of tax at Jun. 30, 2022		10,666	(6,794)	7,707	48,355	(8,666)
CB_Par value reduction		0		0
Treasury Stock, Retired, Cost Method, Amount		(320)	2,473		(2,153)
Common Shares repurchased			(685)
Net shares issued under employee share-based compensation plans			28	10
Exercise of stock options				(8)
Share-based compensation expense				66
Funding of dividends declared to Retained earnings				(346)
Net loss attributable to Chubb	792				792
Funding of dividends declared from Additional paid-in capital					346
Dividends declared on Common Shares					(346)
Other Comprehensive Income (Loss), Net of Tax	(3,450)					(3,450)
Balance – end of period, net of tax at Sep. 30, 2022	47,675	10,346	(4,978)	7,429	46,994	(12,116)
Net loss attributable to noncontrolling interests	0						0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest							0
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)							0
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value							0
Total shareholders' equity	47,675
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)	0						0
Total shareholders' equity	50,519
Balance – beginning of period, net of tax at Dec. 31, 2022	50,519	10,346	(5,113)	7,166	48,305	(10,185)
CB_Par value reduction		(9,759)		9,759
Treasury Stock, Retired, Cost Method, Amount		(346)	2,869		(2,523)
Common Shares repurchased			(1,758)
Net shares issued under employee share-based compensation plans			255	(203)
Exercise of stock options				(15)
Share-based compensation expense				230
Funding of dividends declared to Retained earnings				(1,050)
Net loss attributable to Chubb	5,728				5,728
Funding of dividends declared from Additional paid-in capital					1,050
Dividends declared on Common Shares					(1,050)
Other Comprehensive Income (Loss), Net of Tax	(1,409)					(1,333)
Balance – end of period, net of tax at Sep. 30, 2023	52,373	241	(3,747)	15,887	51,510	(11,518)
Net loss attributable to noncontrolling interests	(3)						(3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest							(76)
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)							0
Balance – beginning of period, net of tax at Jun. 30, 2023		241	(3,174)	16,163	49,467	(9,822)
CB_Par value reduction		0		0
Treasury Stock, Retired, Cost Method, Amount		0	0		0
Common Shares repurchased			(606)
Net shares issued under employee share-based compensation plans			33	3
Exercise of stock options				(2)
Share-based compensation expense				75
Funding of dividends declared to Retained earnings				(352)
Net loss attributable to Chubb	2,043				2,043
Funding of dividends declared from Additional paid-in capital					352
Dividends declared on Common Shares					(352)
Other Comprehensive Income (Loss), Net of Tax	(1,772)					(1,696)
Balance – end of period, net of tax at Sep. 30, 2023	52,373	$ 241	$ (3,747)	$ 15,887	$ 51,510	$ (11,518)
Net loss attributable to noncontrolling interests	(3)						(3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest							(76)
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)	5,131						5,131
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value							$ 5,210
Total shareholders' equity	$ 57,504

Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Adjustments to reconcile net income to net cash flows from operating activities
Net realized (gains) losses	$ 484	$ 936
Market risk benefits gains (losses)	154	(85)
Amortization of premiums/discounts on fixed maturities	(80)	185
Amortization of purchased intangibles	226	211
Equity in net income of partially-owned entities	(610)	(180)
Deferred income taxes	39	55
Unpaid losses and loss expenses	3,270	4,805
Unearned premiums	2,085	1,904
Future policy benefits	570	117
Insurance and reinsurance balances payable	23	544
Accounts payable, accrued expenses, and other liabilities	(392)	337
Income taxes payable	(6)	(108)
Insurance and reinsurance balances receivable	(1,618)	(1,756)
Reinsurance recoverable	(388)	(1,850)
Deferred policy acquisition costs	(832)	(355)
Other	796	(95)
Net cash flows from operating activities	9,446	8,600
Cash flows from investing activities
Purchases of fixed maturities available for sale	(21,613)	(23,533)
Purchases of fixed maturities held to maturity	(208)	(454)
Purchases of equity securities	(968)	(837)
Sales of fixed maturities available for sale	11,293	14,142
Sales of equity securities	531	4,453
Maturities and redemptions of fixed maturities available for sale	5,107	7,882
Maturities and redemptions of fixed maturities held to maturity	708	1,357
Net change in short-term investments	484	(1,106)
Net derivative instruments settlements	(56)	(52)
Private equity contribution	(1,313)	(2,194)
Private equity distribution	938	649
Payments to Acquire Businesses, Net of Cash Acquired	216	(5,095)
Other	(553)	(414)
Net cash flows used for investing activities	(5,434)	(5,202)
Cash flows from financing activities
Dividends paid on Common Shares	(1,044)	(1,030)
Common Shares repurchased	(1,848)	(2,783)
Proceeds from issuance of repurchase agreements	3,778	3,552
Repayment of long-term debt	(475)	0
Repayment of repurchase agreements	(3,832)	(2,554)
Proceeds from share-based compensation plans	140	198
Policyholder contract deposits	415	321
Policyholder contract withdrawals	(269)	(285)
Payment, Tax Withholding, Share-based Payment Arrangement	(100)	(100)
Proceeds from (Payments for) Other Financing Activities	(90)	(49)
Net cash flows used for financing activities	(3,325)	(2,730)
Effect of foreign currency rate changes on cash and restricted cash	(36)	(215)
Net increase (decrease) in cash and restricted cash	651	453
Cash and restricted cash - beginning of period	2,127	1,811
Cash and restricted cash - end of period	2,778	2,264
Supplemental cash flow information
Taxes paid	1,101	964
Interest paid	345	339
Net income	$ 5,725	$ 3,935

Consolidated Statements of Operations and Comprehensive Income (Parentheticals) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Liability for Future Policy Benefit, Remeasurement Gain (Loss)	$ 25	$ 17	$ 21	$ 11

General and significant accounting policies

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

General

General and significant accounting policies

a) Basis of presentation

Chubb Limited is a holding company incorporated in Zurich, Switzerland. Chubb Limited, through its subsidiaries, provides a broad range of insurance and reinsurance products to insureds worldwide. Our results are reported through the following business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. Refer to Note 18 for additional information.

The interim unaudited consolidated financial statements include the accounts of Chubb Limited and its subsidiaries (collectively, Chubb, we, us, or our), over which Chubb exercises control, including Huatai Group, our majority-owned subsidiary, and minority-owned entities such as variable interest entities (VIEs) in which Chubb is considered the primary beneficiary. Noncontrolling interests on the consolidated financial statements represent the portion of majority-owned subsidiaries and VIEs in which we do not have direct equity ownership. These interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) and, in the opinion of management, reflect all adjustments necessary for a fair statement of the results and financial position for such periods. All significant intercompany accounts and transactions, including internal reinsurance transactions, have been eliminated.

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Accordingly, Chubb discontinued the equity method of accounting for its investment in Huatai Group and applied consolidation accounting. Business activity for, and the financial position of, Huatai Group is reported at 100 percent on the Consolidated Financial Statements starting when Chubb obtained control of Huatai Group on July 1, 2023. The relevant amounts attributable to shareholders other than Chubb (representing approximately 30.4 percent of Huatai Group) are reflected under Noncontrolling interests, Net income (loss) attributable to noncontrolling interests, and Comprehensive income (loss) attributable to noncontrolling interests in the Consolidated Financial Statements. Refer to Note 2 for additional information.

Huatai Group's life and asset management businesses are included in the Life Insurance segment, and Huatai Group's P&C business is included in the Overseas General Insurance segment. Results for Huatai Group's non-insurance operations, comprising real estate and holding company activity, are included in Corporate.

The results of operations and cash flows for any interim period are not necessarily indicative of the results for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our 2022 Form 10-K.

b) Accounting policies adopted upon consolidation of Huatai Group

The following accounting policies have been adopted or updated upon the consolidation of Huatai Group and its subsidiaries (collectively, Huatai) in the third quarter of 2023:

Asset management and performance fee revenue and expenses

Huatai's asset management companies recognize revenue and expenses unrelated to Chubb's core insurance operations from the management of third-party assets. These revenues include fixed-rate management fees, which are recognized in the period in which the services are performed, and asset performance fees, which are recognized to the extent it is probable that a significant reversal will not occur. These fees and expenses are included in Other (income) expense on the Consolidated statements of operations. Refer to Note 17 for additional information.

Private debt held-for-investment, at amortized cost

Private debt held-for-investment are investments related principally to the funding of public and private projects that are mostly infrastructure related, and were acquired as part of Huatai’s investment portfolio upon consolidation. They have stated interest rates and maturity dates with fixed or determinable payments. Private debt held-for-investment are carried at amortized cost, net of a valuation allowance for credit losses. Interest income is recorded when earned.

Other investments

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai’s asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities.

Other investments principally comprised these fixed maturities. These securities are reported at fair value with changes in fair value reported through the Consolidated statements of operations within Net realized gains (losses) as required under investment company accounting standards.

Consolidation of variable interest entities (VIEs)

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai's asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities. These entities are created for varied purposes during the ordinary course of business, such as to obtain returns from investments, and to collect management fees for the assets managed on behalf of the third party investors. While many investors may not be related parties, Huatai invests in these funds at various ownership percentages. We determined that we are the primary beneficiary of these VIEs and generally consolidate when we hold an economic interest of 10 percent or more. The consolidation of VIEs records 100 percent of the underlying assets and liabilities of the mutual funds within the Consolidated balance sheets. The relevant amounts attributable to investors other than Chubb are reflected as Noncontrolling interests. Where Huatai's ownership in these sponsored investment products is less than 10 percent, we generally would not expect to be the primary beneficiary of these VIEs. Refer to Note 3 g) for additional information.

c) Accounting guidance adopted in 2023

Targeted Improvements to the Accounting for Long-Duration Contracts

Effective January 1, 2023, we adopted new guidance on the accounting for long-duration contracts (LDTI). The new accounting guidance requires more frequent updating of assumptions and a standardized discount rate for the future policy benefit liability, a requirement to use the fair value measurement model for policies with market risk benefits, simplified amortization of deferred acquisition costs, and enhanced disclosures.

With the exception of market risk benefits, we adopted this guidance on a modified retrospective basis. Under the modified retrospective basis, the liability for future policy benefits is updated to remove any amounts related to changes to the original discount rate at January 1, 2021 (the transition date) in AOCI and future cash flow assumptions are applied to contracts in force. The liability for future policy benefits prior to the transition date continues to use the original discount rate (interest accretion rate). The guidance for long-duration contracts applicable to market risk benefits, primarily assumed reinsurance programs involving minimum benefit guarantees under variable annuity contracts, was adopted on a retrospective transition approach. Under the retrospective transition approach, we calculated the fair value of market risk benefits which were previously accounted for under an insurance accounting model and recognized an adjustment to retained earnings as of January 1, 2021.

On January 1, 2021, we recognized a cumulative effect adjustment and increased beginning retained earnings by $52 million, and decreased AOCI by $1.8 billion. Results for the prior reporting periods in this report are presented in accordance with the new guidance. We also adopted the required disclosures in Note 6 Deferred acquisition costs, Note 9 Future policy benefits, Note 10 Policyholders’ account balances, Note 11 Market risk benefits, and Note 12 Separate accounts.

The impact of adoption of the new guidance on our historical financial statements is as follows:


	December 31, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated balance sheet
Reinsurance recoverable on losses and loss expenses	$	18,901	$	(42)	$	18,859
Reinsurance recoverable on policy benefits	303		(1)		302
Deferred policy acquisition costs	5,788		243		6,031
Value of business acquired	3,596		106		3,702

Prepaid reinsurance premiums	3,140		(4)		3,136
Investments in partially-owned insurance companies	2,877		(370)		2,507

Unpaid losses and loss expenses	76,323		(576)		75,747
Unearned premiums	20,360		(647)		19,713

Future policy benefits	10,120		356		10,476
Market risk benefits	—		800		800
Insurance and reinsurance balances payable	7,795		(15)		7,780

Deferred tax liabilities	292		85		377
Retained Earnings	48,334		(29)		48,305
Accumulated other comprehensive income (loss)	(10,193)		8		(10,185)

Excluded from the table above is the reclassification of Separate account assets, Separate account liabilities, and Policyholders' account balances as separate line items on the Consolidated balance sheets. Separate accounts assets were previously classified in Other assets, and Separate account liabilities and Policyholders' account balances were previously classified in Accounts payable, accrued expenses, and other liabilities.


	Three Months Ended						Nine Months Ended
	September 30, 2022						September 30, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted		As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statements of operations and comprehensive income
Net premiums written	$	12,020	$	(8)	$	12,012	$	31,521	$	(27)	$	31,494
Net premiums earned	11,535		(5)		11,530		29,838		(22)		29,816
Net realized gains (losses)	(384)		(72)		(456)		(787)		(149)		(936)
Market risk benefits gains (losses)	—		69		69		—		85		85
Losses and loss expenses	7,279		(216)		7,063		17,474		(641)		16,833
Policy benefits	486		221		707		790		651		1,441
Policy acquisition costs	1,975		(5)		1,970		5,451		(36)		5,415

Other (income) expense	188		14		202		(21)		12		(9)
Income tax expense	265		(2)		263		913		(6)		907
Net Income	812		(20)		792		4,001		(66)		3,935
Other comprehensive income
Change in current discount rate on future policy benefits	—		479		479		—		1,546		1,546
Change in instrument-specific credit risk on market risk benefits	—		8		8		—		48		48
Income tax benefit related to OCI items	165		(56)		109		1,222		(151)		1,071
Comprehensive income (loss)	(3,093)		435		(2,658)		(8,529)		1,422		(7,107)


	Nine Months Ended
	September 30,2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statement of cash flows













Net cash flows from operating activities	$	8,592	$	8	$	8,600





Net cash flows used for financing activities	(2,722)		(8)		(2,730)

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of future policy benefits:


	Life Insurance						Overseas General Insurance				Offsetting Equity Line Classification
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		A&H		Total
Future policy benefits
Balance – December 31, 2020 (1)	$	391	$	2,578	$	2,270	$	72	$	754	$	6,065

Effect of change in current discount rate	63		1,189		299		17		19		1,587		AOCI
Balance – January 1, 2021	$	454	$	3,767	$	2,569	$	89	$	773	$	7,652

(1) Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of market risk benefits:


(in millions of U.S. dollars)			Offsetting Equity Line Classification
Market risk benefits
Balance – December 31, 2020	$	1,138
Cumulative effect of changes in instrument-specific credit risk between original contract issuance date and transition date (1)	84		AOCI
Other fair value adjustments	(59)		Retained Earnings
Balance – January 1, 2021	$	1,163

(1) Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

Significant accounting policies

The following accounting policies have been updated to reflect the adoption of LDTI. Refer to Note 1 in the 2022 Form 10-K for a complete description of our accounting policies.

Deferred policy acquisition costs (DAC)

Policy acquisition costs on long-duration contracts are grouped by contract type and issue year into cohorts consistent with the grouping used in estimating the associated liability. Deferred policy acquisition costs are amortized on a constant level basis over the expected term of the related contracts to approximate straight-line amortization. The constant level basis used for amortization is the face amount in force and is projected using the same assumptions used in estimating the liability for future policy benefits. If those projected assumptions change in future periods, they will be reflected in the cohort level amortization basis at that time. Unexpected changes in the in-force portfolio, due to variances in mortality and lapse experience, are recognized over the contract term. Changes in future mortality and lapse assumptions are also recognized prospectively over the remaining expected contract term.

Future policy benefits

For traditional and limited-payment contracts, contracts are grouped into cohorts by contract type and issue year to determine a liability for future policy benefits. The future policy benefit liability (FPBL) is the present value of estimated future policy benefits to be paid to or on behalf of policyholders and certain related expenses less the present value of estimated future net premiums to be collected from policyholders, and is accrued as premium revenue is recognized. The valuation of this liability requires management to make estimates and assumptions regarding expenses, mortality, and persistency. Estimates are primarily based on historical experience. Actual results could differ materially from these estimates.

The liability is adjusted for differences between actual and expected experience. With the exception of the expense assumption, we review our future cash flow assumptions at least annually to determine if the net premium ratio (NPR), the mechanism used to record the liability as premium is earned, used to calculate the liability should be changed at that time. We have elected to use expense assumptions that are locked in at contract inception and are not subsequently reviewed or updated. Each quarter, we update the cash flows expected over the entire life of each cohort for actual historical experience and projected future cash

flows. These updated cash flows are used to calculate the revised NPR, which is used to derive an updated FPBL as of the beginning of the current reporting period, discounted at the original contract issuance discount rate. This amount is then compared to the carrying amount of the liability as of that same date, but before the updating of cash flow assumptions, to determine the current period change in FPBL. This current period change in the liability is the liability remeasurement gain or loss and is recorded in Policy benefits in the Consolidated statements of operations. In subsequent periods, the revised NPR is used to measure the FPBL until future revisions become required.

For traditional and limited-payment contracts, the discount rate assumption based on an upper-medium grade fixed-income instrument yield. An equivalent rate is derived based on A-credit-rated fixed-income instruments with similar duration to the liability. The discount rate assumption is updated quarterly and used to remeasure the liability at each reporting date, with the resulting change reflected in Other comprehensive income. For liability cash flows that are projected beyond the duration of market-observable A-credit-rated fixed-income instruments, we use the last market-observable yield level, as the basis for a linear interpolation to determine yield assumptions for durations that do not have market-observable yields.

Deferred profit liability

For limited-payment products, gross premiums received in excess of net premiums are deferred at initial recognition as a deferred profit liability (DPL) and recorded as a component of Future policy benefits in the Consolidated balance sheets. Net premiums are measured using actual cash flows and future cash flow assumptions consistent with those used in the measurement of the liability for future policy benefits and remeasured quarterly. The DPL is amortized in proportion to the discounted in-force policies. Interest is accreted on the balance of the DPL using the discount rate consistent with the interest accretion on the FPBL. The recalculated DPL, including adjusted amortization through the current period, is compared to the current carrying amount and the difference is recognized as an adjustment to Policy benefits in the Consolidated statements of operations as a remeasurement gain or loss.

Market risk benefits

Chubb reinsures various death and living benefit guarantees associated with variable annuities issued primarily in the United States, which are referred to as market risk benefits. These reinsurance contracts provide both protection to the ceding entity from other-than-nominal capital market risk and expose us to other-than-nominal capital market risk.

Market risk benefits are measured at fair value using a valuation model based on current net exposures, market data, our experience, and other factors. Changes in fair value are recognized in Market risk benefits gains (losses) in the Consolidated statements of operations, except the change in fair value due to a change in the instrument-specific credit risk, which is recognized in other comprehensive income. Refer to Note 11 for additional information.

Accounting guidance adopted

Accounting guidance adopted in 2023

Targeted Improvements to the Accounting for Long-Duration Contracts

Effective January 1, 2023, we adopted new guidance on the accounting for long-duration contracts (LDTI). The new accounting guidance requires more frequent updating of assumptions and a standardized discount rate for the future policy benefit liability, a requirement to use the fair value measurement model for policies with market risk benefits, simplified amortization of deferred acquisition costs, and enhanced disclosures.

With the exception of market risk benefits, we adopted this guidance on a modified retrospective basis. Under the modified retrospective basis, the liability for future policy benefits is updated to remove any amounts related to changes to the original discount rate at January 1, 2021 (the transition date) in AOCI and future cash flow assumptions are applied to contracts in force. The liability for future policy benefits prior to the transition date continues to use the original discount rate (interest accretion rate). The guidance for long-duration contracts applicable to market risk benefits, primarily assumed reinsurance programs involving minimum benefit guarantees under variable annuity contracts, was adopted on a retrospective transition approach. Under the retrospective transition approach, we calculated the fair value of market risk benefits which were previously accounted for under an insurance accounting model and recognized an adjustment to retained earnings as of January 1, 2021.

On January 1, 2021, we recognized a cumulative effect adjustment and increased beginning retained earnings by $52 million, and decreased AOCI by $1.8 billion. Results for the prior reporting periods in this report are presented in accordance with the new guidance. We also adopted the required disclosures in Note 6 Deferred acquisition costs, Note 9 Future policy benefits, Note 10 Policyholders’ account balances, Note 11 Market risk benefits, and Note 12 Separate accounts.

The impact of adoption of the new guidance on our historical financial statements is as follows:


	December 31, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated balance sheet
Reinsurance recoverable on losses and loss expenses	$	18,901	$	(42)	$	18,859
Reinsurance recoverable on policy benefits	303		(1)		302
Deferred policy acquisition costs	5,788		243		6,031
Value of business acquired	3,596		106		3,702

Prepaid reinsurance premiums	3,140		(4)		3,136
Investments in partially-owned insurance companies	2,877		(370)		2,507

Unpaid losses and loss expenses	76,323		(576)		75,747
Unearned premiums	20,360		(647)		19,713

Future policy benefits	10,120		356		10,476
Market risk benefits	—		800		800
Insurance and reinsurance balances payable	7,795		(15)		7,780

Deferred tax liabilities	292		85		377
Retained Earnings	48,334		(29)		48,305
Accumulated other comprehensive income (loss)	(10,193)		8		(10,185)

Excluded from the table above is the reclassification of Separate account assets, Separate account liabilities, and Policyholders' account balances as separate line items on the Consolidated balance sheets. Separate accounts assets were previously classified in Other assets, and Separate account liabilities and Policyholders' account balances were previously classified in Accounts payable, accrued expenses, and other liabilities.


	Three Months Ended						Nine Months Ended
	September 30, 2022						September 30, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted		As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statements of operations and comprehensive income
Net premiums written	$	12,020	$	(8)	$	12,012	$	31,521	$	(27)	$	31,494
Net premiums earned	11,535		(5)		11,530		29,838		(22)		29,816
Net realized gains (losses)	(384)		(72)		(456)		(787)		(149)		(936)
Market risk benefits gains (losses)	—		69		69		—		85		85
Losses and loss expenses	7,279		(216)		7,063		17,474		(641)		16,833
Policy benefits	486		221		707		790		651		1,441
Policy acquisition costs	1,975		(5)		1,970		5,451		(36)		5,415

Other (income) expense	188		14		202		(21)		12		(9)
Income tax expense	265		(2)		263		913		(6)		907
Net Income	812		(20)		792		4,001		(66)		3,935
Other comprehensive income
Change in current discount rate on future policy benefits	—		479		479		—		1,546		1,546
Change in instrument-specific credit risk on market risk benefits	—		8		8		—		48		48
Income tax benefit related to OCI items	165		(56)		109		1,222		(151)		1,071
Comprehensive income (loss)	(3,093)		435		(2,658)		(8,529)		1,422		(7,107)


	Nine Months Ended
	September 30,2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statement of cash flows













Net cash flows from operating activities	$	8,592	$	8	$	8,600





Net cash flows used for financing activities	(2,722)		(8)		(2,730)

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of future policy benefits:


	Life Insurance						Overseas General Insurance				Offsetting Equity Line Classification
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		A&H		Total
Future policy benefits
Balance – December 31, 2020 (1)	$	391	$	2,578	$	2,270	$	72	$	754	$	6,065

Effect of change in current discount rate	63		1,189		299		17		19		1,587		AOCI
Balance – January 1, 2021	$	454	$	3,767	$	2,569	$	89	$	773	$	7,652

(1) Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of market risk benefits:


(in millions of U.S. dollars)			Offsetting Equity Line Classification
Market risk benefits
Balance – December 31, 2020	$	1,138
Cumulative effect of changes in instrument-specific credit risk between original contract issuance date and transition date (1)	84		AOCI
Other fair value adjustments	(59)		Retained Earnings
Balance – January 1, 2021	$	1,163

(1) Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

Basis of presentation

Chubb Limited is a holding company incorporated in Zurich, Switzerland. Chubb Limited, through its subsidiaries, provides a broad range of insurance and reinsurance products to insureds worldwide. Our results are reported through the following business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. Refer to Note 18 for additional information.

The interim unaudited consolidated financial statements include the accounts of Chubb Limited and its subsidiaries (collectively, Chubb, we, us, or our), over which Chubb exercises control, including Huatai Group, our majority-owned subsidiary, and minority-owned entities such as variable interest entities (VIEs) in which Chubb is considered the primary beneficiary. Noncontrolling interests on the consolidated financial statements represent the portion of majority-owned subsidiaries and VIEs in which we do not have direct equity ownership. These interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) and, in the opinion of management, reflect all adjustments necessary for a fair statement of the results and financial position for such periods. All significant intercompany accounts and transactions, including internal reinsurance transactions, have been eliminated.

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Accordingly, Chubb discontinued the equity method of accounting for its investment in Huatai Group and applied consolidation accounting. Business activity for, and the financial position of, Huatai Group is reported at 100 percent on the Consolidated Financial Statements starting when Chubb obtained control of Huatai Group on July 1, 2023. The relevant amounts attributable to shareholders other than Chubb (representing approximately 30.4 percent of Huatai Group) are reflected under Noncontrolling interests, Net income (loss) attributable to noncontrolling interests, and Comprehensive income (loss) attributable to noncontrolling interests in the Consolidated Financial Statements. Refer to Note 2 for additional information.

Huatai Group's life and asset management businesses are included in the Life Insurance segment, and Huatai Group's P&C business is included in the Overseas General Insurance segment. Results for Huatai Group's non-insurance operations, comprising real estate and holding company activity, are included in Corporate.

The results of operations and cash flows for any interim period are not necessarily indicative of the results for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our 2022 Form 10-K.

Other Investment

Other investments

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai’s asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities.

Other investments principally comprised these fixed maturities. These securities are reported at fair value with changes in fair value reported through the Consolidated statements of operations within Net realized gains (losses) as required under investment company accounting standards.

The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480016/944-40-65-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480016/944-40-65-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480016/944-40-65-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480016/944-40-65-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (h)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480016/944-40-65-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 11.M.Q2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480530/250-10-S99-5

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (i)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480528/815-20-65-6

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 5
-Subparagraph (f)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479832/842-10-65-5

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 5
-Subparagraph (f)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479832/842-10-65-5

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 848
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483550/848-10-65-2

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 105
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479343/105-10-65-6

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 8
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482615/740-10-65-8

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 8
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482615/740-10-65-8

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 8
-Subparagraph (e)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482615/740-10-65-8

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482833/825-10-65-6

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482833/825-10-65-6

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (e)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482833/825-10-65-6

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479654/326-10-65-4

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479654/326-10-65-4

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (f)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483194/926-20-65-2

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (f)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483194/926-20-65-2

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (f)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483194/926-20-65-2

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480530/250-10-S99-6

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 250
-Publisher FASB
-URI https://asc.fasb.org//250/tableOfContent

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-1

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (d)(1)
-SubTopic 20
-Topic 310
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481925/310-20-65-2

Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (d)(2)
-SubTopic 20
-Topic 310
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481925/310-20-65-2

Investments, Debt and Equity Securities [Abstract]

Acquisitions

9 Months Ended

Sep. 30, 2023

Business Combinations [Abstract]

Acquisitions

Huatai Group

Huatai Insurance Group Co., Ltd. (Huatai Group) is a Chinese financial services holding company and the parent company of, among others, Huatai Property & Casualty Insurance Co., Ltd. (Huatai P&C), Huatai Life Insurance Co., Ltd. (Huatai Life), Huatai Asset Management Co., Ltd., and Huatai Baoxing Fund Management Co., Ltd., of which Huatai Group owns 100 percent, 80 percent, 82 percent, and 85 percent, respectively (collectively, Huatai).

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Chubb paid $318 million for the incremental 5.4 percent ownership interest.

On October 1, 2023, we closed on an incremental ownership interest of approximately 2.5 percent for $146 million, which was previously paid as a deposit. Chubb has agreements in place to acquire approximately 14.1 percent of incremental ownership interests, pending completion of certain closing conditions, of which approximately 3 percent also requires regulatory approval. We have paid deposits of $416 million for the approximately 14.1 percent of ownership interests, and the remaining aggregate purchase price to be paid upon closing is approximately $433 million, based on current exchange rates. Refer to Note 2 to the Consolidated Financial Statements in our 2022 Form 10-K for additional information.

Upon discontinuation of the equity method of accounting, Chubb remeasured the 64.2 percent equity method investment to its fair value of $4.1 billion as of July 1, 2023, resulting in a one-time realized gain of $744 million after-tax, reflecting the remeasurement of the previously held equity interest's historical carrying value to fair value. There was also a net realized and unrealized loss of $17 million after-tax reflecting the write-off of AOCI loss balances accumulated while under the equity method of $611 million with an offset to realized loss of $628 million.

The acquisition of a controlling majority interest in Huatai Group generated $3,394 million of Goodwill, attributable to expected growth and profitability, and $1,655 million of Other intangible assets. None of the goodwill is expected to be deductible for income tax purposes. Additionally, the acquisition of a controlling majority interest in Huatai Group generated $309 million of Value of business acquired (VOBA). Chubb financed the transaction through available cash on hand. Direct costs related to the acquisition were expensed as incurred. These include one-time costs that are directly attributable to third-party consulting fees and other professional and legal fees related to the acquisition.

The following table summarizes Chubb's best estimate of fair value of the assets acquired and liabilities assumed on July 1, 2023. The fair value of assets and liabilities are preliminary and may change with offsetting adjustments to goodwill. Chubb may make further adjustments to its purchase price allocation and the fair value of noncontrolling interest through the end of the permissible one-year measurement period.


Preliminary estimate of Huatai Group assets and liabilities consolidated	July 1
(in millions of U.S. dollars)	2023
Assets
Investments and Cash	$	13,346
Accrued investment income	60
Insurance and reinsurance balances receivable	277
Reinsurance recoverable on losses and loss expenses	581
Reinsurance recoverable on future policy benefits	27
Value of business acquired	309
Goodwill and intangible assets	5,049
Other assets	748
Total assets	$	20,397
Liabilities
Unpaid losses and loss expenses	$	831
Unearned premiums	800
Future policy benefits	2,287
Policyholders' account balances	4,014
Insurance and reinsurance balances payable	644
Accounts payable, accrued expenses, and other liabilities	702
Deferred tax liabilities	232
Repurchase agreements	1,269
Total liabilities	$	10,779

Net acquired assets, including goodwill, attributable to Chubb	4,408
Net acquired assets, attributable to noncontrolling interests	5,210
Net acquired assets, including goodwill	$	9,618

The following table summarizes the results of the acquired Huatai Group operations that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2023:


(in millions of U.S. dollars)
Total revenues	$	389
Net loss	$	(11)
Net loss attributable to Chubb	$	(9)

The preliminary purchase price allocation to intangible assets recorded in connection with the Huatai Group acquisition and their related useful lives at July 1, 2023, are as follows:


(in millions of U.S. dollars)	Amount		Weighted-average useful life
Definite life
Agency distribution relationships	$	332	20 years
Asset management customer contracts	94		16 years
Unearned premium reserves (UPR) intangible asset	95		3 years
Land use rights	569		31 years
Technology	45		6 years
Indefinite life
Trademarks	398		Indefinite
Asset management mutual funds	122		Indefinite
Total identified intangible assets	$	1,655

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of a controlling majority interest in Huatai Group that occurred on July 1, 2023, had instead occurred on January 1, 2022. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition of a controlling majority interest been consummated on January 1, 2022, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets.


	Three Months Ended				Nine Months Ended
Pro forma:	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Net premiums earned	$	12,674	$	11,952	$	34,605	$	30,996
Total revenues	$	13,755	$	12,612	$	37,589	$	33,019
Net income	$	1,905	$	787	$	5,595	$	3,975
Net income attributable to Chubb	$	1,912	$	777	$	5,587	$	3,935

Cigna’s Accident and Health (A&H) and Life Insurance Business in Asian Markets

On July 1, 2022, we completed the acquisition of the life and non-life insurance companies that house the personal accident, supplemental health, and life insurance business of Cigna in several Asian markets. Chubb paid approximately $5.4 billion in cash for the operations, which include Cigna's accident and health (A&H) and life business in Korea, Taiwan, New Zealand, Thailand, Hong Kong, and Indonesia, collectively referred to as Cigna's business in Asia. This complementary strategic acquisition expands our presence and advances our long-term growth opportunity in Asia. Effective July 1, 2022, the results of operations of this acquired business are reported primarily in our Life Insurance segment and, to a lesser extent, our Overseas General Insurance segment. Refer to the 2022 Form 10-K for additional information on this acquisition.

The acquisition of Cigna's business in Asia generated $1,177 million of goodwill, attributable to expected growth and profitability, and $309 million of other intangible assets. None of the goodwill is expected to be deductible for income tax purposes. Additionally, the acquisition of Cigna's business in Asia generated $3,633 million of value of business acquired (VOBA). Chubb financed the transaction through a combination of available cash and $2.0 billion in repurchase agreements that expired at the end of 2022. Direct costs related to the acquisition were expensed as incurred.

The following table summarizes the fair value of the assets acquired and liabilities assumed at July 1, 2022:


Assets acquired and liabilities assumed from Cigna's business in Asia	July 1
(in millions of U.S. dollars)	2022
Assets
Investments and Cash	$	5,274
Accrued investment income	33
Insurance and reinsurance balances receivable	52
Reinsurance recoverable on losses and loss expenses	3
Reinsurance recoverable on future policy benefits	85
Value of business acquired	3,633
Goodwill and intangible assets	1,486
Other assets	648
Total assets	$	11,214
Liabilities
Unpaid losses and loss expenses	$	12
Unearned premiums	60
Future policy benefits	3,856
Insurance and reinsurance balances payable	115
Accounts payable, accrued expenses, and other liabilities	926
Deferred tax liabilities	886
Total liabilities	$	5,855

Net acquired assets, including goodwill	5,359
Total	$	11,214

The following table summarizes the results of the acquired Cigna business in Asia that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2022:


(in millions of U.S. dollars)
Total revenues	$	681
Net income	$	17

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of Cigna's business in Asia that occurred on July 1, 2022, had instead occurred on January 1, 2021. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition been consummated on January 1, 2021, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets and recognition of interest expense associated with the repurchase agreement transactions used to effect the acquisition.


	Three Months Ended		Nine Months Ended
Pro forma:	September 30		September 30
(in millions of U.S. dollars)	2022		2022
Net premiums earned	$	11,530	$	31,341
Total revenues	$	12,124	$	33,161
Net income	$	837	$	4,172

Investments

9 Months Ended

Sep. 30, 2023

Investments

a) Transfers of securities

In June 2023, we determined that we no longer have the intent to hold securities in our held to maturity (HTM) portfolio until maturity. As a result, our entire HTM securities portfolio was transferred to the available for sale (AFS) portfolio. This decision allowed us to increase our flexibility to execute on our investment strategy and take advantage of the continuing higher reinvestment environment while not making any major change to our current asset allocation. At the time of the transfer on June 30, 2023, these securities had a carrying value of $8.2 billion and a fair value of $7.8 billion, resulting in an increase to Unrealized depreciation in OCI of $428 million, after-tax. This transfer represents a non-cash transaction and does not impact the Consolidated Statements of Cash Flows.

b) Fixed maturities


September 30, 2023	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	3,944	$	—	$	2	$	(265)	$	3,681
Non-U.S.	34,912		(53)		239		(2,381)		32,717
Corporate and asset-backed securities	44,932		(104)		61		(4,034)		40,855
Mortgage-backed securities	22,402		(1)		6		(2,802)		19,605
Municipal	3,165		—		2		(259)		2,908
	$	109,355	$	(158)	$	310	$	(9,741)	$	99,766


December 31, 2022	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	2,792	$	—	$	5	$	(171)	$	2,626
Non-U.S.	28,064		(59)		108		(2,205)		25,908
Corporate and asset-backed securities	40,547		(107)		49		(3,534)		36,955
Mortgage-backed securities	17,871		(3)		4		(2,021)		15,851
Municipal	4,081		—		8		(209)		3,880
	$	93,355	$	(169)	$	174	$	(8,140)	$	85,220


December 31, 2022	Amortized Cost		Valuation Allowance		Net Carrying Value		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Held to maturity
U.S. Treasury / Agency	$	1,417	$	—	$	1,417	$	1	$	(48)	$	1,370
Non-U.S.	1,140		(4)		1,136		—		(82)		1,054
Corporate and asset-backed securities	1,733		(28)		1,705		1		(126)		1,580
Mortgage-backed securities	1,456		(1)		1,455		—		(104)		1,351
Municipal	3,136		(1)		3,135		1		(52)		3,084
	$	8,882	$	(34)	$	8,848	$	3	$	(412)	$	8,439

The following table presents the amortized cost of our held to maturity securities according to S&P rating:


	December 31, 2022
(in millions of U.S. dollars, except for percentages)		Amortized cost		% of Total
AAA		$	1,612	18	%
AA		5,023		57	%
A		1,634		18	%
BBB		593		7	%
BB		20		—	%

Total		$	8,882	100	%

The following table presents fixed maturities by contractual maturity:


	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Carrying Value		Fair Value		Net Carrying Value		Fair Value
Available for sale
Due in 1 year or less	$	4,805	$	4,805	$	2,962	$	2,962
Due after 1 year through 5 years	31,738		31,738		24,791		24,791
Due after 5 years through 10 years	27,452		27,452		26,679		26,679
Due after 10 years	16,166		16,166		14,937		14,937
	80,161		80,161		69,369		69,369
Mortgage-backed securities	19,605		19,605		15,851		15,851
	$	99,766	$	99,766	$	85,220	$	85,220
Held to maturity
Due in 1 year or less	$	—	$	—	$	1,015	$	1,003
Due after 1 year through 5 years	—		—		3,658		3,531
Due after 5 years through 10 years	—		—		1,460		1,423
Due after 10 years	—		—		1,260		1,131
	—		—		7,393		7,088
Mortgage-backed securities	—		—		1,455		1,351
	$	—	$	—	$	8,848	$	8,439

Expected maturities could differ from contractual maturities because borrowers may have the right to call or prepay obligations, with or without call or prepayment penalties.

c) Gross unrealized loss

Fixed maturities in an unrealized loss position at September 30, 2023, and December 31, 2022, comprised both investment grade and below investment grade securities for which fair value declined, principally due to rising interest rates since the date of purchase. Refer to Note 1 e) in the 2022 Form 10-K for further information on factors considered in the evaluation of expected credit losses.

The following tables present, for AFS fixed maturities in an unrealized loss position (including securities on loan) that are not deemed to have expected credit losses, the aggregate fair value and gross unrealized loss by length of time the security has been in an unrealized loss position:


	0 – 12 Months				Over 12 Months				Total
September 30, 2023	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)
U.S. Treasury / Agency	$	1,108	$	(32)	$	2,449	$	(233)	$	3,557	$	(265)
Non-U.S.	8,591		(280)		16,631		(1,670)		25,222		(1,950)
Corporate and asset-backed securities	10,120		(362)		22,672		(2,441)		32,792		(2,803)
Mortgage-backed securities	5,827		(249)		13,450		(2,510)		19,277		(2,759)
Municipal	1,389		(51)		1,269		(208)		2,658		(259)
Total AFS fixed maturities	$	27,035	$	(974)	$	56,471	$	(7,062)	$	83,506	$	(8,036)


	0 – 12 Months				Over 12 Months				Total
December 31, 2022	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)

U.S. Treasury / Agency	$	2,152	$	(125)	$	386	$	(46)	$	2,538	$	(171)
Non-U.S.	15,538		(1,012)		5,490		(704)		21,028		(1,716)
Corporate and asset-backed securities	25,687		(1,793)		4,190		(552)		29,877		(2,345)
Mortgage-backed securities	10,561		(1,033)		4,770		(941)		15,331		(1,974)
Municipal	3,251		(152)		155		(48)		3,406		(200)
Total AFS fixed maturities	$	57,189	$	(4,115)	$	14,991	$	(2,291)	$	72,180	$	(6,406)

At September 30, 2023, the tax benefit on certain unrealized losses in our investment portfolio was reduced by a valuation allowance of $1,108 million necessary due to limitations on the utilization of these losses. As part of evaluating whether it was more likely than not that we could realize these losses, we considered realized gains, carryback ability and available tax planning strategies.

The following table presents a roll-forward of valuation allowance for expected credit losses on fixed maturities:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Available for sale
Valuation allowance for expected credit losses - beginning of period	$	193	$	78	$	169	$	14


Provision for expected credit loss	34		91		172		169

Write-offs charged against the expected credit loss	(1)		—		(5)		—
Foreign currency revaluation	—		(2)		—		(2)
Recovery of expected credit loss	(68)		(20)		(178)		(34)
Valuation allowance for expected credit losses - end of period	$	158	$	147	$	158	$	147
Held to maturity
Valuation allowance for expected credit losses - beginning of period	$	—	$	34	$	34	$	35


Provision for expected credit loss	—		—		—		1


Recovery of expected credit loss	—		(1)		(34)		(3)
Valuation allowance for expected credit losses - end of period	$	—	$	33	$	—	$	33

d) Net realized gains (losses)

The following table presents the components of Net realized gains (losses):


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities:



Gross realized gains	$	97	$	144	$	116	$	545
Gross realized losses	(185)		(331)		(457)		(1,158)
Net (provision for) recovery of expected credit losses	34		(70)		44		(133)
Impairment (1)	(16)		(22)		(60)		(111)
Total fixed maturities	(70)		(279)		(357)		(857)
Equity securities	(100)		(80)		(61)		(287)

Private equities	40		(42)		75		17
Foreign exchange	(67)		202		(122)		546
Investment and embedded derivative instruments	9		(198)		(92)		(232)
Other derivative instruments	(7)		(19)		(6)		(9)
Other (2)	92		(40)		79		(114)
Net realized gains (losses) (pre-tax)	$	(103)	$	(456)	$	(484)	$	(936)

(1)Relates to certain securities we intended to sell and securities written to market entering default.

(2)The three and nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

Realized gains and losses from Other investments, Equity securities and Private equities from the table above include sales of securities and unrealized gains and losses from fair value changes as follows:


									Three Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(100)	$	40	$	(61)	$	(80)	$	(42)	$	(122)
Less: Net gains (losses) recognized from sales of securities	—		(45)		—		(45)		(12)		—		(12)
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(55)	$	40	$	(16)	$	(68)	$	(42)	$	(110)


									Nine Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(61)	$	75	$	13	$	(287)	$	17	$	(270)
Less: Net gains (losses) recognized from sales of securities	—		(48)		—		(48)		406		—		406
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(13)	$	75	$	61	$	(693)	$	17	$	(676)

e) Alternative investments

Alternative investments include partially-owned investment companies, investment funds, and limited partnerships measured at fair value using net asset value (NAV) as a practical expedient. The following table presents, by investment category, the expected liquidation period, fair value, and maximum future funding commitments of alternative investments:


	Expected Liquidation Period of Underlying Assets	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)		Fair Value		Maximum Future Funding Commitments		Fair Value		Maximum Future Funding Commitments
Financial	2 to 10 Years	$	1,219	$	384	$	1,074	$	505
Real assets	2 to 13 Years	2,136		526		2,166		681
Distressed	2 to 8 Years	1,160		810		1,048		755
Private credit	3 to 8 Years	319		309		215		429
Traditional	2 to 14 Years	8,222		4,280		7,424		5,025
Vintage	1 to 3 Years	78		—		55		—
Investment funds	Not Applicable	228		—		373		—
		$	13,362	$	6,309	$	12,355	$	7,395

Included in all categories in the above table, except for Investment funds, are investments for which Chubb will never have the contractual option to redeem but receives distributions based on the liquidation of the underlying assets. Further, for all categories except for Investment funds, Chubb does not have the ability to sell or transfer the investments without consent from the general partner of the individual funds.


Investment Category:						Consists of investments in private equity funds:
Financial						targeting financial services companies, such as financial institutions and insurance services worldwide
Real assets						targeting investments related to hard physical assets, such as real estate, infrastructure and natural resources
Distressed						targeting distressed corporate debt/credit and equity opportunities in the U.S.
Private credit						targeting privately originated corporate debt investments, including senior secured loans and subordinated bonds
Traditional						employing traditional private equity investment strategies, such as buyout and growth equity globally
Vintage						funds where the initial fund term has expired

Investment funds employ various investment strategies, such as long/short equity and arbitrage/distressed. Included in this category are investments for which Chubb has the option to redeem at agreed upon value as described in each investment fund’s subscription agreement. Depending on the terms of the various subscription agreements, investment fund investments may be redeemed monthly, quarterly, semi-annually, or annually. If Chubb wishes to redeem an investment fund investment, it must first determine if the investment fund is still in a lock-up period (a time when Chubb cannot redeem its investment so that the investment fund manager has time to build the portfolio). If the investment fund is no longer in its lock-up period, Chubb must then notify the investment fund manager of its intention to redeem by the notification date prescribed by the subscription agreement. Subsequent to notification, the investment fund can redeem Chubb’s investment within several months of the notification. Notice periods for redemption of the investment funds are up to 270 days. Chubb can redeem its investment funds without consent from the investment fund managers.

f) Restricted assets

Chubb is required to maintain assets on deposit with various regulatory authorities to support its insurance and reinsurance operations. These requirements are generally promulgated in the statutory regulations of the individual jurisdictions. The assets on deposit are available to settle insurance and reinsurance liabilities. Chubb is also required to restrict assets pledged under repurchase agreements, which represent Chubb's agreement to sell securities and repurchase them at a future date for a predetermined price. We use trust funds in certain large reinsurance transactions where the trust funds are set up for the benefit of the ceding companies and generally take the place of letter of credit (LOC) requirements. We have investments in segregated portfolios primarily to provide collateral or guarantees for LOC and derivative transactions. Included in restricted assets at September 30, 2023, and December 31, 2022, are investments, primarily fixed maturities, totaling $17,505 million and $15,721 million, respectively, and cash of $192 million and $115 million, respectively.

The following table presents the components of restricted assets:


	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Trust funds	$	8,462	$	8,120
Deposits with U.S. regulatory authorities	2,290		2,345
Deposits with non-U.S. regulatory authorities	3,366		2,959
Assets pledged under repurchase agreements	2,753		1,527
Other pledged assets	826		885
Total	$	17,697	$	15,836

g) Variable interest entities (VIEs)

Consolidated VIEs

Certain subsidiaries of Huatai Group are the investment manager of, and maintain investments in, sponsored investment products that are considered Variable Interest entities (VIEs). Refer to Note 1 for further information on our consolidation criteria. The assets of these VIEs are not available to our creditors, and the investors in these VIEs have no recourse to Chubb in excess of the assets contained within the VIEs. Our economic exposures are limited to our investments based on our ownership interest in these VIEs. Our total exposure to these sponsored investment products represents the value of our economic ownership interest.

The following table presents the balances related to these sponsored investment products accounted for as VIEs that were recorded on our Consolidated balance sheets, including our net interest in these sponsored investment products:


	September 30
(in millions of U.S. dollars)	2023
Short-term investments	$	466

Equity securities	986
Private equities	21
Other investments	3,937
Total investments of consolidated VIEs	5,410
Cash	164
Other assets	22
Total assets of consolidated VIEs	$	5,596
Other liabilities	32
Repurchase agreements	837
Total liabilities of consolidated VIEs	869
Noncontrolling interests	3,176
Chubb's net interest in consolidated VIEs	$	1,551

The carrying value of assets and liabilities on the Consolidated balance sheets relating to nonconsolidated sponsored investment products where we are not the primary beneficiary is immaterial.

Fair value measurements

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Fair value measurements

a) Fair value hierarchy

Fair value of financial assets and financial liabilities is estimated based on the framework established in the fair value accounting guidance. The guidance defines fair value as the price to sell an asset or transfer a liability (an exit price) in an orderly transaction between market participants and establishes a three-level valuation hierarchy based on the reliability of the inputs. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data.

The three levels of the hierarchy are as follows:

•Level 1 – Unadjusted quoted prices for identical assets or liabilities in active markets;

•Level 2 – Includes, among other items, inputs other than quoted prices that are observable for the asset or liability such as

interest rates and yield curves, quoted prices for similar assets and liabilities in active markets, and quoted prices for identical or similar assets and liabilities in markets that are not active; and

•Level 3 – Inputs that are unobservable and reflect management’s judgments about assumptions that market participants

would use in pricing an asset or liability.

We categorize financial instruments within the valuation hierarchy at the balance sheet date based upon the lowest level of inputs that are significant to the fair value measurement.

We use pricing services to obtain fair value measurements for the majority of our investment securities. Based on management’s understanding of the methodologies used, these pricing services only produce an estimate of fair value if there is observable market information that would allow them to make a fair value estimate. Based on our understanding of the market inputs used by the pricing services, all applicable investments have been valued in accordance with GAAP. We do not adjust prices obtained from pricing services. The following is a description of the valuation techniques and inputs used to determine fair values for financial instruments carried at fair value, as well as the general classification of such financial instruments pursuant to the valuation hierarchy.

Fixed maturities

We use pricing services to estimate fair value measurements for the majority of our fixed maturities. The pricing services use market quotations for fixed maturities that have quoted prices in active markets; such securities are classified within Level 1. For fixed maturities other than U.S. Treasury securities that generally do not trade on a daily basis, the pricing services prepare estimates of fair value measurements using their pricing applications or pricing models, which include available relevant market information, benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing. Additional valuation factors that can be taken into account are nominal spreads, dollar basis, and liquidity adjustments. The pricing services evaluate each asset class based on relevant market and credit information, perceived market movements, and sector news. The market inputs used in the pricing evaluation, listed in the approximate order of priority include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, reference data, and industry and economic events. The extent of the use of each input is dependent on the asset class and the market conditions. Given the asset class, the priority of the use of inputs may change, or some market inputs may not be relevant. Additionally, fixed maturities valuation is more subjective when markets are less liquid due to the lack of market based inputs (i.e., stale pricing) and may require the use of models to be priced. The lack of market based inputs may increase the potential that an investment's estimated fair value is not reflective of the price at which an actual transaction would occur. The overwhelming majority of fixed maturities are classified within Level 2 because the most significant inputs used in the pricing techniques are observable. For a small number of fixed maturities, we obtain a single broker quote (typically from a market maker). Due to the disclaimers on the quotes that indicate that the price is indicative only, we include these fair value estimates in Level 3.

Equity securities

Equity securities with active markets are classified within Level 1 as fair values are based on quoted market prices. For equity securities in markets which are less active, fair values are based on market valuations and are classified within Level 2. Equity securities for which pricing is unobservable are classified within Level 3.

Short-term investments

Short-term investments, which comprise securities due to mature within one year of the date of purchase that are traded in active markets, are classified within Level 1 as fair values are based on quoted market prices. Securities such as commercial paper and discount notes are classified within Level 2 because these securities are typically not actively traded due to their approaching maturity, and as such, their cost approximates fair value. Short-term investments for which pricing is unobservable are classified within Level 3.

Private equities

Fair values for the majority of Private equities including investments in partially-owned investment companies, investment funds, and limited partnerships are based on their respective NAV and are excluded from the fair value hierarchy table below.

Other investments

Certain of our long-duration contracts are supported by assets that do not qualify for separate account reporting under GAAP. These assets comprise mutual funds, classified within Level 1 in the valuation hierarchy on the same basis as other equity securities traded in active markets. Other investments principally include fixed maturities carried at fair value with changes in fair value recorded through the Consolidated statements of operations. These fixed maturities principally relate to the acquired Huatai investment portfolio and are classified within Level 2. Also included are life insurance policies collateralizing investments held in rabbi trusts maintained by Chubb for deferred compensation plans and supplemental retirement plans. These policies are carried at cash surrender value and are classified in the valuation hierarchy within Level 2.

Securities lending collateral

The underlying assets included in Securities lending collateral in the Consolidated balance sheets are fixed maturities which are classified in the valuation hierarchy on the same basis as other fixed maturities. Excluded from the valuation hierarchy is the corresponding liability related to Chubb’s obligation to return the collateral plus interest as it is reported at contract value and not fair value in the Consolidated balance sheets.

Investment derivatives

Actively traded investment derivative instruments, including futures, options, and forward contracts are classified within Level 1 as fair values are based on quoted market prices. The fair value of cross-currency swaps and interest rate swaps is based on market valuations and is classified within Level 2. Investment derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Derivatives designated as hedging instruments

Certain of our derivatives are cross-currency swaps designated as fair value and net investment hedging instruments. The fair value of cross-currency swaps and interest rate swaps is based on market valuations and is classified within Level 2. Investment derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Other derivative instruments

We maintain positions in exchange-traded equity futures contracts designed to limit exposure to a severe equity market decline, which would cause an increase in expected claims and, therefore, an increase in market risk benefits (MRB) reserves and our MRB reinsurance business. Our positions in exchange-traded equity futures contracts are classified within Level 1. The fair value of the majority of the remaining positions in other derivative instruments is based on significant observable inputs including equity security and interest rate indices. Accordingly, these are classified within Level 2. Other derivative instruments based on unobservable inputs are classified within Level 3. Other derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Separate account assets

Separate account assets represent segregated funds where investment risks are borne by the customers, except to the extent of certain guarantees made by Chubb. Separate account assets principally comprise mutual funds classified within Level 1 in the valuation hierarchy on the same basis as other equity securities traded in active markets. Separate account assets also include fixed maturities classified within Level 2 because the most significant inputs used in the pricing techniques are observable. Excluded from the valuation hierarchy are the corresponding liabilities as they are reported at contract value and not fair value in the Consolidated balance sheets.

Financial instruments measured at fair value on a recurring basis, by valuation hierarchy


September 30, 2023	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	3,084	$	597	$	—	$	3,681
Non-U.S.	—		32,084		633		32,717
Corporate and asset-backed securities	—		38,286		2,569		40,855
Mortgage-backed securities	—		19,580		25		19,605
Municipal	—		2,908		—		2,908
	3,084		93,455		3,227		99,766

Equity securities	3,310		—		85		3,395
Short-term investments	2,546		2,906		2		5,454
Other investments (1)	569		4,364		—		4,933
Securities lending collateral	—		1,469		—		1,469
Investment derivatives	42		—		—		42
Derivatives designated as hedging instruments	—		48		—		48
Other derivative instruments	53		—		—		53
Separate account assets	5,217		89		—		5,306
Total assets measured at fair value (1)(2)	$	14,821	$	102,331	$	3,314	$	120,466
Liabilities:
Investment derivatives	$	168	$	—	$	—	$	168
Derivatives designated as hedging instruments	—		68		—		68
Other derivative instruments	—		4		—		4
Market risk benefits (3)	—		—		770		770
Total liabilities measured at fair value	$	168	$	72	$	770	$	1,010

(1)Excluded from the table above are policy loans of $603 million, and other investments of $47 million at September 30, 2023, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $13,362 million at September 30, 2023, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.


December 31, 2022	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	2,100	$	526	$	—	$	2,626
Non-U.S.	—		25,344		564		25,908
Corporate and asset-backed securities	—		34,506		2,449		36,955
Mortgage-backed securities	—		15,840		11		15,851
Municipal	—		3,880		—		3,880
	2,100		80,096		3,024		85,220
Equity securities	737		—		90		827
Short-term investments	3,108		1,849		3		4,960
Other investments (1)	552		399		—		951
Securities lending collateral	—		1,523		—		1,523
Investment derivative instruments	82		—		—		82
Derivatives designated as hedging instruments	—		17		—		17
Other derivative instruments	33		—		—		33
Separate account assets	5,101		89		—		5,190
Total assets measured at fair value (1)(2)	$	11,713	$	83,973	$	3,117	$	98,803
Liabilities:
Investment derivatives	$	139	$	—	$	—	$	139
Derivatives designated as hedging instruments	—		53		—		53
Market risk benefits (3)	—		—		800		800

Total liabilities measured at fair value	$	139	$	53	$	800	$	992

(1)Excluded from the table above are policy loans of $343 million and other investments of $47 million at December 31, 2022, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $12,355 million at December 31, 2022, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.

Level 3 financial instruments

The following tables present a reconciliation of the beginning and ending balances of financial instruments measured at fair value using significant unobservable inputs (Level 3). Excluded from the following tables is the reconciliation of Market risk benefits, refer to Note 11 for additional information:



Three Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities	Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities

Balance, beginning of period	$	649	$	2,524	$	10		$	86	$	3
Transfers into Level 3	—		—		—			—		—
Transfers out of Level 3	(22)		(10)		—			—		—
Change in Net Unrealized Gains/Losses in OCI	(6)		6		—			—		—
Net Realized Gains/Losses	(2)		(4)		—			—		—
Purchases	46		158		16			4		—
Sales	(17)		(40)		—			(5)		(1)
Settlements	(15)		(65)		(1)			—		—

Balance, end of period	$	633	$	2,569	$	25		$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(4)	$	—		$	—	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(8)	$	4	$	—		$	—	$	—



Three Months Ended September 30, 2022 (in millions of U.S. dollars)		Available-for-Sale Debt Securities								Equity securities		Short-term investments
	Non-U.S.			Corporate and asset- backed securities			Mortgage-backed securities

Balance, beginning of period		$	549		$	2,261		$	19	$	81	$	9
Transfers into Level 3		—			2			—		—		—
Transfers out of Level 3		—			(4)			—		—		—
Change in Net Unrealized Gains/Losses in OCI		(34)			(16)			—		—		—

Net Realized Gains/Losses		(4)			(9)			—		3		(1)

Purchases		39			164			4		3		1
Sales		(19)			(8)			—		(4)		—
Settlements		(25)			(94)			(4)		—		(6)

Balance, end of period		$	506		$	2,296		$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date		$	(1)		$	(3)		$	—	$	3	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date		$	(35)		$	(19)		$	—	$	—	$	—



Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities	Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities

Balance, beginning of period	$	564	$	2,449	$	11		$	90	$	3
Transfers into Level 3	21		3		—			—		—
Transfers out of Level 3	(22)		(23)		—			—		—
Change in Net Unrealized Gains/Losses in OCI	5		8		—			—		(1)
Net Realized Gains/Losses	(3)		(7)		—			(6)		—
Purchases	151		481		16			15		3
Sales	(52)		(70)		—			(14)		(3)
Settlements	(31)		(272)		(2)			—		—

Balance, end of period	$	633	$	2,569	$	25		$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(6)	$	—		$	(6)	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	1	$	2	$	—		$	—	$	—



Nine Months Ended September 30, 2022 (in millions of U.S. dollars)		Available-for-Sale Debt Securities								Equity securities		Short-term investments
	Non-U.S.			Corporate and asset- backed securities			Mortgage-backed securities

Balance, beginning of period		$	633		$	2,049		$	26	$	77	$	7
Transfers into Level 3		23			41			—		1		—
Transfers out of Level 3		(23)			(97)			(5)		—		—
Change in Net Unrealized Gains/Losses in OCI		(88)			(68)			—		—		—
Net Realized Gains/Losses		(6)			(9)			—		7		(1)

Purchases		108			658			4		6		8
Sales		(44)			(59)			—		(8)		—
Settlements		(97)			(219)			(6)		—		(11)

Balance, end of period		$	506		$	2,296		$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date		$	(3)		$	(4)		$	—	$	6	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date		$	(89)		$	(71)		$	—	$	—	$	—

b) Financial instruments disclosed, but not measured, at fair value

Chubb uses various financial instruments in the normal course of its business. Our insurance contracts are excluded from fair value of financial instruments accounting guidance, and therefore, are not included in the amounts discussed below.

The carrying values of cash, other assets, other liabilities, and other financial instruments not included below approximated their fair values. Refer to the 2022 Form 10-K for information on the fair value methods and assumptions for investments in partially-owned insurance companies, short-term and long-term debt, repurchase agreements, and trust-preferred securities.

The following tables present fair value, by valuation hierarchy, and carrying value of the financial instruments not measured at fair value:


September 30, 2023	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Private debt held-for-investment	$	—	$	—	$	2,389	$	2,389	$	2,401
Total assets	$	—	$	—	$	2,389	$	2,389	$	2,401
Liabilities:
Repurchase agreements	$	—	$	2,617	$	—	$	2,617	$	2,617
Short-term debt	—		688		—		688		700
Long-term debt	—		11,627		—		11,627		13,736
Trust preferred securities	—		362		—		362		308
Total liabilities	$	—	$	15,294	$	—	$	15,294	$	17,361

Private debt held-for-investment is related to Huatai and its consolidation. The fair value of Private debt held-for-investment is derived using a discounted cash flow approach, which includes an evaluation of forecasted contractual cash flows and yield curve information, among other loan characteristics and assumptions. These assumptions are derived from internal and third party sources. Since the valuation is derived from model-based techniques, Private debt held-for-investment is classified within Level 3 of the valuation hierarchy.


December 31, 2022	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities held to maturity
U.S. Treasury / Agency	$	1,299	$	71	$	—	$	1,370	$	1,417
Non-U.S.	—		1,054		—		1,054		1,136
Corporate and asset-backed securities	—		1,580		—		1,580		1,705
Mortgage-backed securities	—		1,351		—		1,351		1,455
Municipal	—		3,084		—		3,084		3,135
Total assets	$	1,299	$	7,140	$	—	$	8,439	$	8,848
Liabilities:
Repurchase agreements	$	—	$	1,419	$	—	$	1,419	$	1,419
Short-term debt	—		473		—		473		475
Long-term debt	—		12,495		—		12,495		14,402
Trust preferred securities	—		383		—		383		308
Total liabilities	$	—	$	14,770	$	—	$	14,770	$	16,604

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

Deferred Policy Acquisition Costs Disclosures [Abstract]

Reinsurance

9 Months Ended

Sep. 30, 2023

Reinsurance Disclosures [Abstract]

Reinsurance [Text Block]

Reinsurance

Reinsurance recoverable on ceded reinsurance


	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Reinsurance Recoverable (1)		Valuation allowance		Net Reinsurance Recoverable (1)		Valuation allowance
Reinsurance recoverable on unpaid losses and loss expenses	$	17,808	$	318	$	17,086	$	289
Reinsurance recoverable on paid losses and loss expenses	1,942		52		1,773		62
Reinsurance recoverable on losses and loss expenses	$	19,750	$	370	$	18,859	$	351
Reinsurance recoverable on policy benefits	$	315	$	1	$	302	$	4

(1)Net of valuation allowance for uncollectible reinsurance.

The increase in reinsurance recoverable on losses and loss expenses was primarily due to the consolidation of Huatai and unfavorable prior period development on ceded reserves.

The following table presents a roll-forward of valuation allowance for uncollectible reinsurance related to Reinsurance recoverable on loss and loss expenses:


	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Valuation allowance for uncollectible reinsurance - beginning of period	$	351	$	329
Provision for uncollectible reinsurance	27		30
Write-offs charged against the valuation allowance	(8)		(4)
Foreign exchange revaluation	—		(3)

Valuation allowance for uncollectible reinsurance - end of period	$	370	$	352

Deferred acquisition costs

9 Months Ended

Sep. 30, 2023

Deferred Policy Acquisition Costs

Deferred acquisition costs

Deferred acquisition costs comprise capitalized costs on short-duration contracts of $3,283 million and $2,809 million and long-duration contracts of $3,573 million and $2,979 million at September 30, 2023, and September 30, 2022, respectively. The assumptions used to amortize DAC were consistent with the assumptions used to estimate the liability for future policy benefits for nonparticipating traditional and limited-payment contracts.

The following tables present a roll-forward of deferred acquisitions costs on long-duration contracts included in the Life Insurance segment:


	Nine Months Ended September 30, 2023

(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	320	$	776	$	395	$	902	$	121	$	2,514

Capitalizations	118		85		102		392		25		722
Amortization expense	(74)		(57)		(16)		(100)		(15)		(262)

Other (including foreign exchange)	8		(20)		7		(13)		(4)		(22)
Balance - end of period	$	372	$	784	$	488	$	1,181	$	127	$	2,952
Overseas General Insurance segment excluded from table											621
Total deferred acquisition costs on long-duration contracts											$	3,573


	Nine Months Ended September 30, 2022

(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	246	$	771	$	334	$	745	$	108	$	2,204

Capitalizations	111		95		46		166		39		457
Amortization expense	(56)		(55)		(14)		(72)		(16)		(213)

Other (including foreign exchange)	(2)		(50)		(16)		(20)		(14)		(102)
Balance - end of period	$	299	$	761	$	350	$	819	$	117	$	2,346
Overseas General Insurance segment excluded from table											633
Total deferred acquisition costs on long-duration contracts											$	2,979

Goodwill and Value of business acquired

9 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets Disclosure [Text Block]

Goodwill, Value of business acquired, and Other intangible assets

Goodwill

The following table presents a roll-forward of Goodwill by segment:


(in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Chubb Consolidated
Balance at December 31, 2022	$	6,945	$	2,230	$	134	$	4,605	$	371	$	1,943	$	16,228

Consolidation of Huatai Group (1)	—		—		—		562		—		2,832		3,394
Foreign exchange revaluation and other	—		—		—		44		—		(112)		(68)
Balance at September 30, 2023	$	6,945	$	2,230	$	134	$	5,211	$	371	$	4,663	$	19,554

(1)Includes $1.0 billion attributable to noncontrolling interests.

Value of business acquired

Value of business acquired (VOBA) represents the fair value of the future profits of in-force long duration contracts from businesses acquired, principally Cigna's Asian business, and is amortized in relation to the profit emergence of the underlying contracts. The VOBA calculation is based on many factors including mortality, morbidity, persistency, investment yields, expenses, and the discount rate, with the discount rate being the most significant factor.

The following table presents a roll-forward of VOBA:


	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023
Balance, beginning of period	$	3,702

Consolidation of Huatai Group	309
Amortization of VOBA (1)	(235)
Foreign exchange revaluation and other	(101)
Balance, end of period	$	3,675

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

The following table presents, as of September 30, 2023, the expected estimated pre-tax amortization expense related to VOBA at current foreign currency rates, for the fourth quarter of 2023 and for the next five years:




For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of VOBA


Fourth quarter of 2023	$	67
2024	270
2025	230
2026	202
2027	181
2028	165
Total	$	1,115

Other intangible assets

Other intangible assets that are subject to amortization principally relate to agency distribution relationships, renewal rights, and patents. Other intangible assets that are not subject to amortization principally relate to trademarks. For other intangible assets related to the consolidation of Huatai, refer to Note 2.


(in millions of U.S. dollars)	September 30 2023		December 31 2022
Subject to amortization	$	3,350	$	2,459
Not subject to amortization	3,494		2,982
Total	$	6,844	$	5,441

The following table presents, as of September 30, 2023, the expected pre-tax amortization expense of purchased intangibles, at current foreign currency exchange rates, for the fourth quarter of 2023 and for the next five years:



For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of purchased intangibles		Amortization of Huatai UPR intangible asset (1)		Amortization of Huatai land use rights (2)		Total amortization
Fourth quarter of 2023	$	84	$	16	$	3	$	103
2024	312		30		12		354
2025	286		16		12		314
2026	269		7		12		288
2027	249		3		13		265
2028	240		—		13		253
Total	$	1,440	$	72	$	65	$	1,577

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

(2)Recognized in Other (income) expense in the Consolidated statements of operations.

Unpaid losses and loss expenses

9 Months Ended

Sep. 30, 2023

Liability for Claims and Claims Adjustment Expense [Abstract]

Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block]

Unpaid losses and loss expenses

The following table presents a reconciliation of beginning and ending Unpaid losses and loss expenses:


	Nine Months Ended
	September 30
	2023		2022
(in millions of U.S. dollars)			As Adjusted
Gross unpaid losses and loss expenses – beginning of period	$	75,747	$	72,330
Reinsurance recoverable on unpaid losses – beginning of period (1)	(17,086)		(16,132)
Net unpaid losses and loss expenses – beginning of period	58,661		56,198
Net losses and loss expenses incurred in respect of losses occurring in:
Current year	18,604		17,755
Prior years (2)	(667)		(922)
Total	17,937		16,833
Net losses and loss expenses paid in respect of losses occurring in:
Current year	4,853		4,511
Prior years	10,158		9,217
Total	15,011		13,728
Consolidation of Huatai Group	405		—
Foreign currency revaluation and other	(95)		(1,280)
Net unpaid losses and loss expenses – end of period	61,897		58,023
Reinsurance recoverable on unpaid losses (1)	17,808		17,313
Gross unpaid losses and loss expenses – end of period	$	79,705	$	75,336

(1) Net of valuation allowance for uncollectible reinsurance.

(2) Relates to prior period loss reserve development only and excludes prior period development related to reinstatement premiums, expense adjustments, earned premiums, and development on international A&H lines totaling $71 million and $213 million for the nine months ended September 30, 2023 and 2022, respectively.

Gross and net unpaid losses and loss expenses increased $4.0 billion and $3.2 billion for the nine months ended September 30, 2023, respectively, principally reflecting underlying exposure growth and the consolidation of Huatai. The increase in net unpaid losses also reflected seasonality in our crop insurance business. This increase was partially offset by favorable prior period development and by large payments related to the Boy Scouts of America.

Prior Period Development

Prior period development (PPD) arises from changes to loss estimates recognized in the current year that relate to loss events that occurred in previous calendar years and excludes the effect of losses from the development of earned premium from previous accident years. Long-tail lines include lines such as workers' compensation, general liability, and financial lines; while short-tail lines include lines such as most property lines, energy, personal accident, and agriculture.

The following table summarizes (favorable) and adverse PPD by segment:


	Three Months Ended September 30						Nine Months Ended September 30
(in millions of U.S. dollars)	Long-tail		Short-tail		Total		Long-tail		Short-tail		Total
2023
North America Commercial P&C Insurance	$	107	$	(191)	$	(84)	$	(23)	$	(279)	$	(302)
North America Personal P&C Insurance	—		(119)		(119)		—		(135)		(135)
North America Agricultural Insurance	—		(9)		(9)		—		(12)		(12)
Overseas General Insurance	(52)		3		(49)		(52)		(201)		(253)
Global Reinsurance	—		—		—		7		(32)		(25)
Corporate	61		—		61		131		—		131
Total	$	116	$	(316)	$	(200)	$	63	$	(659)	$	(596)
2022
North America Commercial P&C Insurance	$	(29)	$	(137)	$	(166)	$	(315)	$	(246)	$	(561)
North America Personal P&C Insurance	—		(133)		(133)		—		(187)		(187)
North America Agricultural Insurance	—		9		9		—		(17)		(17)
Overseas General Insurance	(5)		—		(5)		(5)		(233)		(238)
Global Reinsurance	—		—		—		(7)		29		22
Corporate	73		—		73		272		—		272
Total	$	39	$	(261)	$	(222)	$	(55)	$	(654)	$	(709)

Significant prior period movements by segment, principally driven by reserve reviews completed during each respective period, are discussed in more detail below. The remaining net development for long-tail lines and short-tail business for each segment and Corporate comprises numerous favorable and adverse movements across a number of lines and accident years, none of which is significant individually or in the aggregate.

North America Commercial P&C Insurance. Net favorable development for the three months ended September 30, 2023 included $71 million in workers' compensation lines, mainly due to lower than expected loss experience, and $188 million in commercial property and marine lines, mainly due to net lower than expected development impacting the most recent accident years. The favorable development was partially offset by adverse development of $222 million in commercial excess and umbrella lines, driven by higher than expected loss development, principally related to automobile exposures.

Net favorable development for the nine months ended September 30, 2023 included $379 million in workers' compensation lines, $113 million in commercial property and marine lines, and $101 million in surety, all mainly driven by lower than expected development. These favorable movements were partially offset by adverse development of $227 million in commercial excess and umbrella lines and $125 million in commercial auto liability, both driven by higher than expected loss experience.

Net favorable development for the three months ended September 30, 2022 included $164 million from lower than expected loss experience in workers’ compensation lines and $66 million, net of premium adjustments, from lower claims activity in large multi-line loss sensitive accounts. The favorable development was partially offset by net adverse development of $58 million from higher than expected claims severity in commercial auto liability, and $71 million in commercial umbrella/excess portfolios. Net favorable development on our short-tail businesses primarily included $132 million in property and marine portfolios, where paid and reported loss activity for the most recent accident years was lower than expected. Net favorable development for the nine months ended September 30, 2022 also included favorable development in workers’ compensation lines due to updates to loss development factors and our annual assessment of multi-claimant events, including industrial accidents.

North America Personal P&C Insurance. Net favorable development for the three and nine months ended September 30, 2023 included $263 million and $244 million, respectively, in homeowners and valuables lines, mainly due to lower than expected loss experience in accident year 2022. The favorable development was partially offset by net adverse development of $145 million in the three months ended September 30, 2023 in personal excess liability due to adverse development on reported losses.

Net favorable development for the three and nine months ended September 30, 2022 included favorable development in the homeowners and valuables lines of business, driven by lower than expected claims reserve development.

Overseas General Insurance. Net favorable development for the three months ended September 30, 2023 included favorable loss emergence in financial lines of $77 million primarily in accident years 2019 and prior of partially offset by net adverse development of $51 million in political risks. Net favorable development for the nine months ended September 30, 2023, also included net favorable development of $147 million in property and marine lines, and $45 million in A&H lines.

Net favorable development for the three months ended September 30, 2022, included lower than expected paid and reported loss activity of $82 million in casualty lines, including primary and excess lines in Continental Europe, the U.K., and Asia Pacific, and $34 million in environmental lines. The favorable development was partially offset by net adverse development of $114 million in financial lines, including Directors and Officers (D&O) due to a combination of higher than expected development on specific claims and increased expected future development in the U.K., Continental Europe, Asia Pacific, and London wholesale business. Net favorable development for the nine months ended September 30, 2022, also included net favorable development of $75 million in A&H lines, $67 million in property lines, and $53 million in personal lines.

Corporate. Net adverse development for the three months ended September 30, 2023 and 2022, included adverse development for environmental liabilities. Net adverse development for the nine months ended September 30, 2023 and 2022 also included adverse development for molestation claims of $49 million and $155 million, respectively.

Future policy benefits

9 Months Ended

Sep. 30, 2023

Liability for Future Policy Benefits Activity [Abstract]

Liability for future policy benefits

Future policy benefits

The following tables present a roll-forward of the liability for future policy benefits included in the Life Insurance segment:


Present Value of Expected Net Premiums	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	818	$	2,301	$	9,863	$	42	$	13,024
Beginning balance at original discount rate	879		2,354		10,409		43		13,685
Effect of changes in cash flow assumptions	35		40		(811)		2		(734)
Effect of actual variances from expected experience	(13)		6		(120)		—		(127)
Adjusted beginning of period balance	901		2,400		9,478		45		12,824
Consolidation of Huatai Group	3		1,690		145		12		1,850
Issuances	90		274		1,066		5		1,435
Interest accrual	45		62		421		1		529
Net premiums collected (1)	(127)		(375)		(998)		(15)		(1,515)

Other (including foreign exchange)	(9)		(56)		(212)		18		(259)
Ending balance at original discount rate	903		3,995		9,900		66		14,864
Effect of changes in discount rate assumptions	(69)		(62)		(497)		(1)		(629)
Balance – end of period	$	834	$	3,933	$	9,403	$	65	$	14,235

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.


Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	1,427	$	6,048	$	14,206	$	239	$	21,920
Beginning balance at original discount rate	1,555		6,225		15,022		250		23,052
Effect of changes in cash flow assumptions	31		44		(848)		3		(770)
Effect of actual variances from expected experience	(10)		12		(114)		—		(112)
Adjusted beginning of period balance	1,576		6,281		14,060		253		22,170
Consolidation of Huatai Group	17		3,659		163		298		4,137
Issuances	90		276		1,065		5		1,436
Interest accrual	54		176		514		6		750
Benefits payments	(119)		(212)		(1,065)		(8)		(1,404)

Other (including foreign exchange)	92		22		(628)		178		(336)
Ending balance at original discount rate	1,710		10,202		14,109		732		26,753
Effect of changes in discount rate assumptions	(152)		(274)		(790)		(11)		(1,227)
Balance – end of period	$	1,558	$	9,928	$	13,319	$	721	$	25,526


	September 30, 2023
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	724	$	5,995	$	3,916	$	656	$	718	$	12,009
Deferred profit liability	223		707		156		14		—		1,100
Net liability for future policy benefits, per consolidated balance sheet	947		6,702		4,072		670		718		13,109
Less: Reinsurance recoverable on future policy benefits	111		47		103		21		33		315
Net liability for future policy benefits, after reinsurance recoverable	$	836	$	6,655	$	3,969	$	649	$	685	$	12,794
Weighted-average duration (years)	10.2		26.5		10.3		15.1		4.9		18.7


Present Value of Expected Net Premiums	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	422	$	1,341	$	2,520	$	30	$	4,313
Beginning balance at original discount rate	397		1,243		2,323		28		3,991
Effect of changes in cash flow assumptions	—		(3)		(29)		—		(32)
Effect of actuarial variances from expected experience	(31)		12		(120)		—		(139)
Adjusted beginning of period balance	366		1,252		2,174		28		3,820
Acquisition of Cigna	445		1,078		8,191		23		9,737
Issuances	95		155		348		3		601
Interest accrual	45		37		184		1		267
Net premiums collected (1)	(93)		(156)		(445)		(9)		(703)


Other (including foreign exchange)	(46)		(102)		(487)		(4)		(639)
Ending balance at original discount rate	812		2,264		9,965		42		13,083
Effect of changes in discount rate assumptions	(59)		(95)		(531)		(1)		(686)
Balance – end of period	$	753	$	2,169	$	9,434	$	41	$	12,397

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.


Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	921	$	4,785	$	4,939	$	130	$	10,775
Beginning balance at original discount rate	858		3,833		4,589		122		9,402
Effect of changes in cash flow assumptions	(5)		(3)		(41)		11		(38)
Effect of actuarial variances from expected experience	(32)		14		(126)		—		(144)
Adjusted beginning of period balance	821		3,844		4,422		133		9,220
Acquisition of Cigna	668		2,267		10,542		106		13,583
Issuances	100		155		348		3		606
Interest accrual	52		123		242		3		420
Benefits payments	(82)		(151)		(469)		(2)		(704)


Other (including foreign exchange)	(112)		(207)		(651)		(102)		(1,072)
Ending balance at original discount rate	1,447		6,031		14,434		141		22,053
Effect of changes in discount rate assumptions	(126)		(308)		(790)		(16)		(1,240)
Balance – end of period	$	1,321	$	5,723	$	13,644	$	125	$	20,813


	September 30, 2022
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	568	$	3,554	$	4,210	$	84	$	735	$	9,151
Deferred profit liability	172		450		125		8		—		755
Net liability for future policy benefits, per consolidated balance sheet	740		4,004		4,335		92		735		9,906
Less: Reinsurance recoverable on future policy benefits	111		56		107		—		38		312
Net liability for future policy benefits, after reinsurance recoverable	$	629	$	3,948	$	4,228	$	92	$	697	$	9,594
Weighted-average duration (years)	9.0		24.7		11.0		13.5		5.1		16.2

The following table presents the amount of undiscounted expected gross premiums and expected future policy benefit payments included in the Life Insurance segment:


	September 30		September 30
(in millions of U.S. dollars)	2023		2022

Term Life
Undiscounted expected future benefit payments	$	2,492	$	2,189
Undiscounted expected future gross premiums	$	2,884	$	2,503
Discounted expected future benefit payments	$	1,558	$	1,321
Discounted expected future gross premiums	$	1,910	$	1,682
Whole Life
Undiscounted expected future benefit payments	$	23,457	$	15,631
Undiscounted expected future gross premiums	$	9,478	$	6,654
Discounted expected future benefit payments	$	9,928	$	5,723
Discounted expected future gross premiums	$	7,654	$	5,173
A&H
Undiscounted expected future benefit payments	$	23,168	$	23,873
Undiscounted expected future gross premiums	$	34,055	$	34,659
Discounted expected future benefit payments	$	13,319	$	13,644
Discounted expected future gross premiums	$	20,604	$	20,193
Other
Undiscounted expected future benefit payments	$	977	$	265
Undiscounted expected future gross premiums	$	103	$	102
Discounted expected future benefit payments	$	721	$	125
Discounted expected future gross premiums	$	92	$	92

The following table presents the amount of revenue and interest recognized in the statement of operations:


	Gross Premiums or Assessments				Interest Accretion
	Nine Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Life Insurance
Term Life	$	511	$	361	$	9	$	7

Whole Life	858		411		114		86
A&H	2,171		1,226		93		58
Other	54		71		5		2
Overseas General Insurance
A&H	1,175		1,075		—		—
Total	$	4,769	$	3,144	$	221	$	153

The following table presents the weighted-average interest rates:


	Interest Accretion Rate				Current Discount Rate

	September 30				September 30
	2023		2022		2023		2022
Life Insurance
Term Life	2.9	%	2.6	%	6.0	%	6.1	%

Whole Life	3.2	%	3.9	%	4.7	%	5.5	%
A&H	3.7	%	3.6	%	6.7	%	6.1	%
Other	2.6	%	3.7	%	4.3	%	6.2	%

Policyholders' account balances

9 Months Ended

Sep. 30, 2023

Policyholder Account Balance [Abstract]

Liability for policyholders' account balance

Policyholders' account balances

The following tables present a roll-forward of policyholders' account balances:


	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,719	$	1,421	$	3,140
Consolidation of Huatai Group	602		3,412		4,014

Premiums received	275		228		503
Policy charges (1)	(135)		(8)		(143)
Surrenders and withdrawals	(69)		(113)		(182)
Benefit payments	(6)		(81)		(87)

Interest credited	39		43		82
Other (including foreign exchange)	(42)		(107)		(149)
Balance, end of period	$	2,383	$	4,795	$	7,178


	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,612	$	1,154	$	2,766

Acquisition of Cigna	10		345		355
Premiums received	292		55		347
Policy charges (1)	(141)		(8)		(149)
Surrenders and withdrawals	(55)		(39)		(94)
Benefit payments	(3)		(15)		(18)

Interest credited	30		25		55
Other (including foreign exchange)	(69)		(185)		(254)
Balance, end of period	$	1,676	$	1,332	$	3,008

(1)Contracts included in the policyholder account balances are generally charged a premium and/or monthly assessments on the basis of the account balance.



	September 30
	2023						2022
(in millions of U.S. dollars, except for percentages)	Universal Life			Other			Universal Life			Other
Weighted-average crediting rate	3.8		%	2.1		%	3.7		%	2.6		%
Net amount at risk (1)	$	10,493		$	1,675		$	10,116		$	1,503
Cash Surrender Value	$	1,596		$	3,655		$	934		$	1,280

(1)For those guarantees of benefits that are payable in the event of death, the net amount at risk is defined as the current guaranteed minimum death benefit in excess of the current account balance at the balance sheet date.

The following tables present the balance of account values by range of guaranteed minimum crediting rates and the related range of difference, in basis points, between rates being credited to policyholders and the respective guaranteed minimum:

Universal Life


	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	56	$	563	$	622
2.01% – 4.00%	472		377		558		333		1,740
Greater than 4.00%	21		—		—		—		21
Total	$	496	$	377	$	614	$	896	$	2,383


	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	59	$	505	$	567
2.01% – 4.00%	456		394		228		—		1,078
Greater than 4.00%	31		—		—		—		31
Total	$	490	$	394	$	287	$	505	$	1,676

Other policyholders' account balances


	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	1,328	$	—	$	1,719	$	799	$	3,846
2.01% – 4.00%	112		487		27		—		626
Greater than 4.00%	323		—		—		—		323
Total	$	1,763	$	487	$	1,746	$	799	$	4,795


	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	411	$	—	$	191	$	424	$	1,026
2.01% – 4.00%	—		—		—		—		—
Greater than 4.00%	306		—		—		—		306
Total	$	717	$	—	$	191	$	424	$	1,332

Market risk benefits

9 Months Ended

Sep. 30, 2023

Market Risk Benefit [Abstract]

Separate Accounts Disclosure [Abstract]

Our reinsurance programs covering variable annuity guarantees, comprising guaranteed living benefits (GLB) and guaranteed minimum death benefits (GMDB), meet the definition of Market risk benefits (MRB). The following table presents a roll-forward of MRB:


	Nine Months Ended September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	800	$	812
Balance, beginning of period, before effect of changes in the instrument-specific credit risk	776		755



Interest rate changes	(117)		(561)
Effect of changes in equity markets	(69)		633
Effect of changes in volatilities	51		14

Effect of changes in future expected policyholder behavior	89		40

Effect of timing and all other	19		(29)
Balance, end of period, before effect of changes in the instrument-specific credit risk	$	749	$	852
Effect of changes in the instrument-specific credit risk	21		9
Balance – end of period	$	770	$	861
Weighted-average age of policyholders (years)	73		73
Net amount at risk	$	2,138	$	2,885

Excluded from the table above are MRB gains (losses) of $(181) million and $186 million for the nine months ended September 30, 2023 and 2022, respectively, reported in the Consolidated statements of operations, relating to the market risk benefits' economic hedge and other net cash flows. There is no reinsurance recoverable associated with our liability for MRB.

In the third quarter of 2023, we completed a review of policyholder behavior related to annuitizations, partial withdrawals, lapses, and mortality for our variable annuity reinsurance business.

•As annuitization and partial withdrawal experience continued to emerge, we refined our assumptions for an additional year of data. The annuitization assumption updates included treaty-based and age-based behavior, as well as a refresh of our annuitization rates which depend on the value of the guarantees. These refinements resulted in a net increase of approximately $92 million to the MRB fair value, recognized as a Market risk benefits loss.

•We also refined our lapse and mortality assumptions based on additional emerging experience. The changes had an insignificant impact on the MRB fair value.

For MRB, Chubb estimates fair value using an internal valuation model which includes a number of factors including interest rates, equity markets, credit risk, current account value, market volatility, expected annuitization rates and other policyholder behavior, and changes in policyholder mortality. All reinsurance treaties contain claim limits, which are also factored into the valuation model.

Valuation Technique

Significant Unobservable Inputs

September 30, 2023

September 30, 2022

Ranges

Weighted Average(1)

Ranges

Weighted Average(1)

MRB (1)

Actuarial model

Lapse rate

0.5% – 30%

4.0

%

0.5% – 30.4%

3.8

%

Annuitization rate

0% – 100%

4.8

%

0% – 100%

4.6

%

(1)The weighted-average lapse and annuitization rates are determined by weighting each treaty's rates by the MRB contract's fair value.

The most significant policyholder behavior assumptions include lapse rates for MRBs, and GLB annuitization rates. Assumptions regarding lapse rates and GLB annuitization rates differ by treaty, but the underlying methodologies to determine rates applied to each treaty are comparable.

A lapse rate is the percentage of in-force policies surrendered in a given calendar year. All else equal, as lapse rates increase, ultimate claim payments will decrease. In general, the base lapse function assumes low lapse rates during the surrender charge period, followed by a "spike" lapse rate in the year immediately following the surrender charge period, and then reverting to an ultimate lapse rate, typically over a 2-year period. This base rate is adjusted downward for policies with more valuable guarantees (policies with guaranteed values far in excess of their account values). Partial withdrawals and the impact of older policyholders with tax-qualified contracts (due to required minimum distributions) are also reflected in our modeling.

The GLB annuitization rate is the percentage of policies for which the policyholder will elect to annuitize using the guaranteed benefit provided under the GLB. All else equal, as GLB annuitization rates increase, ultimate claim payments will increase, subject to treaty claim limits. All GLB reinsurance treaties include claim limits to protect Chubb in the event that actual annuitization behavior is significantly higher than expected. In general, Chubb assumes that GLB annuitization rates will be higher for policies with more valuable guarantees (policies with guaranteed values far in excess of their account values). Chubb also assumes that GLB annuitization rates increase as policyholders get older. In addition, it is also assumed that GLB annuitization rates are higher in the first year immediately following the waiting period (the first year the policies are eligible to annuitize using the GLB) in comparison to all subsequent years. Chubb does not yet have fully credible annuitization experience for all clients.

The effect of changes in key market factors on assumed lapse and annuitization rates reflect emerging trends using data available from cedants. For treaties with limited experience, rates are established by blending the experience with data received from other ceding companies. The model and related assumptions are regularly re-evaluated by management and enhanced, as appropriate, based upon additional experience obtained related to policyholder behavior and availability of updated information such as market conditions, market participant assumptions, and demographics of in-force annuities.

Separate accounts

9 Months Ended

Sep. 30, 2023

Separate Accounts

Separate accounts

Separate account assets represent segregated funds where investment risks are borne by the customers, except to the extent of certain guarantees made by Chubb. The assets that support variable contracts are measured at fair value and are reported as Separate account assets and corresponding liabilities are reported within Separate account liabilities on the Consolidated balance sheets. Policy charges assessed against the policyholders for mortality, administration, and other services are included in Net premiums earned on the Consolidated statements of operations.

The following table presents the aggregate fair value of Separate account assets, by major security type:


	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Cash and cash equivalents	$	88	$	141

Mutual funds	5,129		4,960

Fixed maturities	89		89

Total	$	5,306	$	5,190

The following table presents a roll-forward of separate account liabilities:


	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	5,190	$	5,560
Acquisition of Cigna	—		301
Premiums and deposits	724		1,147
Policy charges	(103)		(93)
Surrenders and withdrawals	(407)		(304)
Benefit payments	(291)		(289)
Investment performance	382		(978)

Other (including foreign exchange)	(189)		(453)
Balance – end of period	$	5,306	$	4,891
Cash surrender value (1)	$	5,285	$	4,771

(1) Cash surrender value represents the amount of the contract holder's account balances distributable at the balance sheet date less certain surrender charges.

Commitments, contingencies, and guarantees

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments, contingencies, and guarantees

a) Derivative instruments

Chubb maintains positions in derivative instruments such as futures, options, swaps, and foreign currency forward contracts for which the primary purposes are to manage duration and foreign currency exposure, yield enhancement, or to obtain an exposure to a particular financial market. Chubb also maintains positions in convertible securities that contain embedded derivatives, and exchange-traded equity futures contracts on equity market indices to limit equity exposure in the MRB book of business. Investment derivative instruments and derivatives designated as hedges for accounting purposes are recorded in either Other assets (OA) or Accounts payable, accrued expenses, and other liabilities (AP); convertible bonds are recorded in Fixed maturities available for sale (FM AFS); and convertible equity securities are recorded in Equity securities (ES) in the Consolidated balance sheets. These are the most numerous and frequent derivative transactions. In addition, Chubb, from time to time, purchases to be announced mortgage-backed securities (TBAs) as part of its investing activities.

As a global company, Chubb entities transact business in multiple currencies. Our policy is to generally match assets, liabilities, and required capital for each individual jurisdiction in local currency, which would include the use of derivatives discussed below. Some of Chubb's derivatives satisfy hedge accounting requirements, as discussed below. We also consider economic hedging for planned cross border transactions.

The following table presents the balance sheet location, fair value of derivative instruments in an asset or (liability) position, and notional value/payment provision of our derivative instruments:


				September 30, 2023								December 31, 2022
	Consolidated Balance Sheet Location	Fair Value				Notional Value/ Payment Provision			Fair Value					Notional Value/ Payment Provision
(in millions of U.S. dollars)		Derivative Asset		Derivative (Liability)				Derivative Asset			Derivative (Liability)
Investment and embedded derivatives not designated as hedging instruments:
Foreign currency forward contracts	OA / (AP)	$	15	$	(147)	$	3,711		$	64		$	(115)	$	4,134
Options/Futures contracts on notes and bonds	OA / (AP)	27		(21)		2,150			18			(24)		1,511
Convertible securities (1)	FM AFS / ES	53		—		61			30			—		37
		$	95	$	(168)	$	5,922		$	112		$	(139)	$	5,682
Other derivative instruments:
Futures contracts on equities (2)	OA / (AP)	$	48	$	—	$	1,119		$	33		$	—	$	939
Other	OA / (AP)	5		(4)		368			—			—		—
		$	53	$	(4)	$	1,487		$	33		$	—	$	939
Derivatives designated as hedging instruments:
Cross-currency swaps - fair value hedges	OA / (AP)	$	48	$	—	$	1,609		$	17		$	—	$	1,595
Cross-currency swaps - net investment hedges	OA / (AP)	—		(68)		1,594			—			(53)		1,604
		$	48	$	(68)	$	3,203		$	17		$	(53)	$	3,199

(1)Includes fair value of embedded derivatives.

(2)Related to MRB book of business.

At September 30, 2023, and December 31, 2022, net derivative liabilities of $97 million and $60 million, respectively, included in the table above were subject to a master netting agreement. The remaining derivatives included in the table above were not subject to a master netting agreement.

b) Hedge accounting

We designate certain derivatives as fair value hedges and net investment hedges for accounting purposes to hedge for foreign currency exposure associated with portions of our euro denominated debt and the net investment in certain foreign subsidiaries, respectively. These derivatives comprise cross-currency swaps, which are agreements under which two counterparties exchange interest payments and principal denominated in different currencies at a future date.

(i) Cross-currency swaps - fair value hedges

In September 2022, Chubb entered into certain cross-currency swaps designated as fair value hedges. The objective of these cross-currency swaps is to hedge the foreign currency risk on €1.5 billion, or approximately $1.6 billion at September 30, 2023, of our euro denominated debt, by converting cash flows back into the U.S. dollar.

These fair value hedges are carried at fair value. The hedges are expected to be highly effective, with gains or losses on the fair value hedges offsetting the foreign currency remeasurement on the hedged euro denominated senior notes within Net realized gains (losses). The remaining change in fair value is recorded in Other comprehensive income (OCI), with an immaterial amount recorded in Interest expense.

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for fair value hedges:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(17)	$	(94)	$	23	$	(94)
Net realized gain/(loss) reclassified from OCI	(51)		(32)		(20)		(32)
Interest expense reclassified from OCI	(4)		—		(12)		—
OCI gain/(loss) after reclassifications	$	38	$	(62)	$	55	$	(62)

(ii) Cross-currency swaps - net investment hedges

In September 2022, Chubb entered into certain cross-currency swaps designated as net investment hedges. The objective of these cross-currency swaps is to hedge the foreign currency exposure in the net investments of certain foreign subsidiaries by converting cash flows from U.S. dollar to the British pound sterling, Japanese yen, and Swiss franc. The hedged risk is designated as the foreign currency exposure arising between the functional currency of the foreign subsidiary and the functional currency of its parent entity.

These net investment hedges are carried at fair value, with changes in fair value recorded in Cumulative translation adjustments (CTA) within OCI, and an immaterial amount recorded to Interest expense. The mark-to-market adjustments for foreign currency changes will remain until the underlying hedge subsidiary is deconsolidated or if hedge accounting is discontinued.

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for net investment hedges:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(20)	$	64	$	(8)	$	64
Interest income reclassified from OCI	3		—		10		—
OCI gain/(loss) after reclassifications	$	(23)	$	64	$	(18)	$	64

c) Derivative instruments not designated as hedges

Derivative instruments which are not designated as hedges are carried at fair value with changes in fair value recorded in Net realized gains (losses) or, for futures contracts on equities, Market risk benefits gains (losses) in the Consolidated statements of operations. The following table presents net realized gains (losses) related to derivative instrument activity in the Consolidated statements of operations:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Investment and embedded derivative instruments:
Foreign currency forward contracts	$	(17)	$	(247)	$	(95)	$	(515)

All other futures contracts, options, and equities	29		49		5		285
Convertible securities (1)	(3)		—		(2)		(2)

Total investment and embedded derivative instruments	$	9	$	(198)	$	(92)	$	(232)
Other derivative instruments:
Futures contracts on equities (2)	$	52	$	54	$	(80)	$	240
Other	(7)		(19)		(6)		(9)
Total other derivative instruments	$	45	$	35	$	(86)	$	231
	$	54	$	(163)	$	(178)	$	(1)

(1)Includes embedded derivatives.

(2)Related to MRB book of business.

(i) Foreign currency exposure management

A foreign currency forward contract (forward) is an agreement between participants to exchange specific currencies at a future date. Chubb uses forwards to minimize the effect of fluctuating foreign currencies as discussed above.

(ii) Duration management and market exposure

Futures

Futures contracts give the holder the right and obligation to participate in market movements, determined by the index or underlying security on which the futures contract is based. Settlement is made daily in cash by an amount equal to the change in value of the futures contract times a multiplier that scales the size of the contract. Exchange-traded futures contracts on money market instruments, notes and bonds are used in fixed maturity portfolios to more efficiently manage duration, as substitutes for ownership of the money market instruments, bonds, and notes without significantly increasing the risk in the portfolio. Investments in futures contracts may be made only to the extent that there are assets under management not otherwise committed.

Exchange-traded equity futures contracts are used to limit exposure to a severe equity market decline, which would cause an increase in expected claims and, therefore, an increase in market risk benefit reserves.

Options

An option contract conveys to the holder the right, but not the obligation, to purchase or sell a specified amount or value of an underlying security at a fixed price. Option contracts are used in our investment portfolio as protection against unexpected shifts in interest rates, which would affect the duration of the fixed maturity portfolio. By using options in the portfolio, the overall interest rate sensitivity of the portfolio can be reduced. Option contracts may also be used as an alternative to futures contracts in the synthetic strategy as described above.

The price of an option is influenced by the underlying security, level of interest rates, expected volatility, time to expiration, and supply and demand.

The credit risk associated with the above derivative financial instruments relates to the potential for non-performance by counterparties. Although non-performance is not anticipated, in order to minimize the risk of loss, management monitors the creditworthiness of its counterparties and obtains collateral. The performance of exchange-traded instruments is guaranteed by

the exchange on which they trade. For non-exchange-traded instruments, the counterparties are principally banks which must meet certain criteria according to our investment guidelines.

Other

Included within Other are derivatives intended to reduce potential losses which may arise from certain exposures in our insurance business. The economic benefit provided by these derivatives is similar to purchased reinsurance. For example, Chubb may, from time to time, enter into crop derivative contracts to protect underwriting results in the event of a significant decline in commodity prices.

(iii) Convertible security investments

A convertible security is a debt instrument or preferred stock that can be converted into a predetermined amount of the issuer’s equity. The convertible option is an embedded derivative within the host instruments which are classified in the investment portfolio as either available for sale or as an equity security. Chubb purchases convertible securities for their total return and not specifically for the conversion feature.

(iv) TBA

By acquiring TBAs, we make a commitment to purchase a future issuance of mortgage-backed securities. For the period between purchase of the TBAs and issuance of the underlying security, we account for our position as a derivative in the Consolidated Financial Statements. Chubb purchases TBAs, from time to time, both for their total return and for the flexibility they provide related to our mortgage-backed security strategy.

(v) Futures contracts on equities

Under the MRB program, as the assuming entity, Chubb is obligated to provide coverage until the expiration or maturity of the underlying deferred annuity contracts or the expiry of the reinsurance treaty. We may recognize a loss for changes in fair value due to adverse changes in the capital markets (e.g., declining interest rates and/or declining U.S. and/or international equity markets). To mitigate adverse changes in the capital markets, we maintain positions in exchange-traded equity futures contracts, as noted under section "(ii) Futures" above. These futures increase in fair value when the S&P 500 index decreases (and decrease in fair value when the S&P 500 index increases). The net impact of gains or losses related to changes in fair value of the MRB liability and the exchange-traded equity futures are included in Market risk benefits gains (losses) in the Consolidated statements of operations.

d) Securities lending and secured borrowings

Chubb participates in a securities lending program operated by a third-party banking institution whereby certain assets are loaned to qualified borrowers and from which we earn an incremental return. The securities lending collateral can only be drawn down by Chubb in the event that the institution borrowing the securities is in default under the lending agreement. An indemnification agreement with the lending agent protects us in the event a borrower becomes insolvent or fails to return any of the securities on loan. The collateral is recorded in Securities lending collateral and the liability is recorded in Securities lending payable in the Consolidated balance sheets.

The following table presents the carrying value of collateral held under securities lending agreements by investment category and remaining contractual maturity of the underlying agreements:


	Remaining contractual maturity

	September 30, 2023		December 31, 2022
(in millions of U.S. dollars)	Overnight and Continuous
Collateral held under securities lending agreements:
Cash	$	762	$	820
U.S. Treasury / Agency	81		72
Non-U.S.	555		604
Corporate and asset-backed securities	47		27

Municipal	6		—
Equity securities	18		—

	$	1,469	$	1,523
Gross amount of recognized liability for securities lending payable	$	1,469	$	1,523

At September 30, 2023, and December 31, 2022, our repurchase agreement obligations of $2,617 million and $1,419 million, respectively, were fully collateralized. In contrast to securities lending programs, the use of cash received is not restricted for the repurchase obligations. The fair value of the underlying securities sold remains in Fixed maturities available for sale, and the repurchase agreement obligation is recorded in Repurchase agreements in the Consolidated balance sheets.

The following table presents the carrying value of collateral pledged under repurchase agreements by investment category and remaining contractual maturity of the underlying agreements:


	Remaining contractual maturity
	September 30, 2023								December 31, 2022
	Up to 30 Days		30-90 Days		Greater than 90 Days		Total		Up to 30 Days		30-90 Days		Total
(in millions of U.S. dollars)
Collateral pledged under repurchase agreements:
Cash	$	—	$	—	$	46	$	46	$	12	$	—	$	12
Non-U.S.	1,138		—		—		$	1,138	—		—		$	—
U.S. Treasury / Agency	—		103		—		103		—		101		101


Mortgage-backed securities	50		507		909		1,466		921		493		1,414
	$	1,188	$	610	$	955	$	2,753	$	933	$	594	$	1,527
Gross amount of recognized liabilities for repurchase agreements							$	2,617					$	1,419
Difference (1)							$	136					$	108

(1)Per the repurchase agreements, the amount of collateral posted is required to exceed the amount of gross liability.

Potential risks exist in our secured borrowing transactions due to market conditions and counterparty exposure. With collateral that we pledge, there is a risk that the collateral may not be returned at the expiration of the agreement. If the counterparty fails to return the collateral, Chubb will have free use of the borrowed funds until our collateral is returned. In addition, we may encounter the risk that Chubb may not be able to renew outstanding borrowings with a new term or with an existing counterparty due to market conditions including a decrease in demand as well as more restrictive terms from banks due to increased regulatory and capital constraints. Should this condition occur, Chubb may seek alternative borrowing sources or reduce borrowings. Additionally, increased margins and collateral requirements due to market conditions would increase our restricted assets as we are required to provide additional collateral to support the transaction.

e) Fixed maturities

At September 30, 2023, and December 31, 2022, commitments to purchase fixed income securities over the next several years were $1,075 million and $770 million, respectively.

f) Private equities

At September 30, 2023, included in Private equities in the Consolidated balance sheet are investments in limited partnerships and partially-owned investment companies with a carrying value of $13.1 billion. In connection with these investments, we have commitments that may require funding of up to $6.3 billion over the next several years. At December 31, 2022, these investments had a carrying value of $12.0 billion with commitments that may have required funding of up to $7.4 billion.

g) Income taxes

At September 30, 2023, $67 million of unrecognized tax benefits remain outstanding. It is reasonably possible that, over the next twelve months, the amount of unrecognized tax benefits may change resulting from the re-evaluation of unrecognized tax benefits arising from examinations by taxing authorities, settlements, and the lapses of statutes of limitations. With few exceptions, Chubb is no longer subject to income tax examinations for years before 2012.

h) Legal proceedings

Our insurance subsidiaries are subject to claims litigation involving disputed interpretations of policy coverages and, in some jurisdictions, direct actions by allegedly-injured persons seeking damages from policyholders. These lawsuits, involving claims on policies issued by our subsidiaries which are typical to the insurance industry in general and in the normal course of business, are considered in our loss and loss expense reserves. In addition to claims litigation, we are subject to lawsuits and

regulatory actions in the normal course of business that do not arise from or directly relate to claims on insurance policies. This category of business litigation typically involves, among other things, allegations of underwriting errors or misconduct, employment claims, regulatory activity, or disputes arising from our business ventures. In the opinion of management, our ultimate liability for these matters could be, but we believe is not likely to be, material to our consolidated financial condition and results of operations.

i) Lease commitments

At September 30, 2023, and December 31, 2022, the right-of-use asset was $549 million and $607 million, respectively, recorded within Other assets, and the lease liability was $577 million and $633 million, respectively, recorded within Accounts payable, accrued expenses, and other liabilities on the Consolidated balance sheets. These leases consist principally of real estate operating leases that are amortized on a straight-line basis over the term of the lease, which expire at various dates.

Shareholders' equity

9 Months Ended

Sep. 30, 2023

Stockholders' Equity Note [Abstract]

Shareholders' equity

Shareholders’ equity

All of Chubb’s Common Shares are authorized under Swiss corporate law. Though the par value of Common Shares is stated in Swiss francs, Chubb continues to use U.S. dollars as its reporting currency for preparing the Consolidated Financial Statements. Under Swiss corporate law, dividends, including distributions from legal reserves or through a reduction in par value (par value reduction), must be stated in Swiss francs though dividend payments are made by Chubb in U.S. dollars. At September 30, 2023, our Common Shares had a par value of CHF 0.50 per share.

At our May 2023 annual general meeting, our shareholders approved an annual dividend for the following year of up to $3.44 per share, expected to be paid in four quarterly installments of $0.86 per share after the general meeting by way of distribution from capital contribution reserves, transferred to free reserves for payment. The Board of Directors (Board) will determine the record and payment dates at which the annual dividend may be paid until the date of 2024 annual general meeting, and is authorized to abstain from distributing a dividend at its discretion.

At our May 2022 and 2021 annual general meetings, our shareholders approved annual dividends for the following year of up to $3.32 per share and $3.20 per share, respectively, which were paid in four quarterly installments of $0.83 per share and $0.80 per share, respectively, at dates determined by the Board after the annual general meetings by way of a distribution from capital contribution reserves, transferred to free reserves for payment.

The following table presents dividend distributions per Common Share in Swiss francs (CHF) and U.S. dollars (USD):


	Three Months Ended						Nine Months Ended
	September 30						September 30
	2023			2022			2023			2022
	CHF	USD		CHF	USD		CHF	USD		CHF	USD
Total dividend distributions per common share	0.75	$	0.86	0.78	$	0.83	2.29	$	2.55	2.32	$	2.46

Increases in Common Shares in treasury are due to open market repurchases of Common Shares and the surrender of Common Shares to satisfy tax withholding obligations in connection with the vesting of restricted stock and the forfeiture of unvested restricted stock. Decreases in Common Shares in treasury are principally due to grants of restricted stock, exercises of stock options, purchases under the Employee Stock Purchase Plan (ESPP), and share cancellations. At the Chubb Limited Extraordinary General Meeting of Shareholders, held on November 3, 2021, shareholders approved the cancellation of 14,465,400 shares repurchased under our share repurchase program during the first six months of 2021. The capital reduction by cancellation of shares was subject to publication requirements and a two-month waiting period in accordance with Swiss law and became effective on January 17, 2022. At our May 2022 annual general meeting, held on May 19, 2022, our shareholders approved the cancellation of 13,179,100 shares purchased under our share repurchase program during the last six months of 2021. The capital reduction by cancellation of shares was subject to publication requirements and a two-month waiting period in accordance with Swiss law and became effective on August 4, 2022. At our May 2023 annual general meeting, held on May 17, 2023, our shareholders approved the cancellation of 14,925,028 shares purchased under our share repurchase programs during 2022. The capital reduction was subject to publication requirements and became effective in accordance with Swiss law on May 22, 2023. During the nine months ended September 30, 2023, 8,634,600 shares were

repurchased, 14,925,028 shares were canceled, and 2,024,083 net shares were issued under employee share-based compensation plans. At September 30, 2023, 23,467,247 Common Shares remain in treasury.

Chubb Limited securities repurchase authorizations

The Board has authorized share repurchase programs as follows:

•One-time incremental share repurchase program of $5.0 billion of Chubb Common Shares from July 19, 2021 through June 30, 2022;

•$2.5 billion of Chubb Common Shares from May 19, 2022 through June 30, 2023; and

•$5.0 billion of Chubb Common Shares effective July 1, 2023 with no expiration date.

The following table presents repurchases of Chubb's Common Shares conducted in a series of open market transactions under the Board authorizations:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars, except share data)	2023		2022		2023		2022
Number of shares repurchased	2,949,900		3,676,528		8,634,600		14,022,728
Cost of shares repurchased	$	606	$	685	$	1,758	$	2,815
Repurchase authorization remaining at end of period	$	4,398	$	1,816	$	4,398	$	1,816

The following table presents changes in accumulated other comprehensive income (loss):


	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI)
Net unrealized appreciation (depreciation) on investments
Balance – beginning of period, net of tax	$	(6,809)	$	(5,713)	$	(7,279)	$	2,256
Change in period, before reclassification from AOCI (before tax)	(2,240)		(3,324)		(1,935)		(12,898)
Amounts reclassified from AOCI (before tax)	70		279		357		857
Change in period, before tax	(2,170)		(3,045)		(1,578)		(12,041)
Income tax (expense) benefit	29		147		(93)		1,174
Total other comprehensive loss	(2,141)		(2,898)		(1,671)		(10,867)
Noncontrolling interests, net of tax	3		—		3		—
Balance – end of period, net of tax	(8,953)		(8,611)		(8,953)		(8,611)
Current discount rate on liability for future policy benefits
Balance – beginning of period, net of tax	(247)		(427)		(75)		(1,399)
Change in period, before tax	683		479		497		1,546
Income tax expense	(35)		(57)		(21)		(152)
Total other comprehensive income	648		422		476		1,394
Noncontrolling interests, net of tax	(3)		—		(3)		—
Balance – end of period, net of tax	404		(5)		404		(5)


	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI) - continued
Instrument-specific credit risk on market risk benefits
Balance – beginning of period, net of tax	(16)		(17)		(24)		(57)
Change in period, before and net of tax	(5)		8		3		48
Total other comprehensive income (loss)	(5)		8		3		48
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(21)		(9)		(21)		(9)
Cumulative foreign currency translation adjustment
Balance – beginning of period, net of tax	(2,920)		(2,768)		(2,966)		(2,114)
Change in period, before reclassification from AOCI (before tax)	(314)		(942)		(269)		(1,631)
Amounts reclassified from AOCI (before tax)	(3)		—		(10)		—
Change in period, before tax	(317)		(942)		(279)		(1,631)
Income tax benefit	13		7		21		42
Total other comprehensive loss	(304)		(935)		(258)		(1,589)
Noncontrolling interests, net of tax	(76)		—		(76)		—
Balance – end of period, net of tax	(3,148)		(3,703)		(3,148)		(3,703)
Fair value hedging instruments
Balance – beginning of period, net of tax	(53)		—		(66)		—
Change in period, before reclassification from AOCI (before tax)	(17)		(94)		23		(94)
Amounts reclassified from AOCI (before tax)	55		32		32		32
Change in period, before tax	38		(62)		55		(62)
Income tax (expense) benefit	(7)		13		(11)		13
Total other comprehensive income (loss)	31		(49)		44		(49)
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(22)		(49)		(22)		(49)
Postretirement benefit liability adjustment
Balance – beginning of period, net of tax	223		259		225		240
Change in period, before tax	(1)		3		(3)		27
Income tax expense	—		(1)		—		(6)
Total other comprehensive income (loss)	(1)		2		(3)		21
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	222		261		222		261
Accumulated other comprehensive income (loss)	$	(11,518)	$	(12,116)	$	(11,518)	$	(12,116)

The following table presents reclassifications from accumulated other comprehensive income (loss) to the Consolidated statements of operations:


	Three Months Ended				Nine Months Ended				Consolidated Statement of Operations Location
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities available for sale	$	(70)	$	(279)	$	(357)	$	(857)	Net realized gains (losses)
Income tax benefit	25		39		59		138		Income tax expense
	$	(45)	$	(240)	$	(298)	$	(719)	Net income
Cumulative foreign currency translation adjustment
Cross-currency swaps	$	3	$	—	$	10	$	—	Interest expense
Income tax expense	(1)		—		(2)		—		Income tax expense
	$	2	$	—	$	8	$	—	Net income
Net gains (losses) of fair value hedging instruments
Cross-currency swaps	$	(51)	$	(32)	$	(20)	$	(32)	Net realized gains (losses)
Cross-currency swaps	(4)		—		(12)		—		Interest expense
Income tax benefit	12		7		7		7		Income tax expense
	$	(43)	$	(25)	$	(25)	$	(25)	Net income
Total amounts reclassified from AOCI	$	(86)	$	(265)	$	(315)	$	(744)

The entire disclosure for equity.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481004/946-505-50-6

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-6

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//505/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-16

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

Compensation and Employee Benefit Plans [Text Block]

Share-based compensation	9 Months Ended
Share-based compensation	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Share-based compensation	Share-based compensationThe Chubb Limited 2016 Long-Term Incentive Plan, as amended and restated (the Amended 2016 LTIP), permits grants of both incentive and non-qualified stock options principally at an option price per share equal to the grant date fair value of Chubb's Common Shares. Stock options are generally granted with a 3-year vesting period and a 10-year term. Stock options typically vest in equal annual installments over the respective vesting period, which is also the requisite service period. On February 23, 2023, Chubb granted 1,540,002 stock options with a weighted-average grant date fair value of $51.32 each. The fair value of the options issued is estimated on the grant date using the Black-Scholes option pricing model.The Amended 2016 LTIP also permits grants of service-based restricted stock and restricted stock units as well as performance-based restricted stock awards. Chubb generally grants service-based restricted stock and restricted stock units with a 4-year vesting period, based on a graded vesting schedule. The performance-based restricted stock awards granted comprise target awards and premium awards that cliff vest at the end of a 3-year performance period based on both tangible book value (shareholders' equity less goodwill and intangible assets, net of tax) per share growth and P&C combined ratio compared to a defined group of peer companies. Premium awards are subject to an additional vesting provision based on total shareholder return compared to our peer group. The restricted stock is principally granted at market close price on the grant date. On February 23, 2023, Chubb granted 785,319 service-based restricted stock awards, 315,545 service-based restricted stock units, and 407,825 performance-based stock awards to employees and officers with a grant date fair value of $208.60 each. Each restricted stock unit represents our obligation to deliver to the holder one Common Share upon vesting.

Postretirement benefits

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Postretirement benefits

The components of net pension and other postretirement benefit costs (benefits) reflected in Net income in the Consolidated statements of operations were as follows:


	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023		2022
Three Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	2	$	—	$	1	$	—	$	—
Non-service cost (benefit):
Interest cost	35		9		21		5		1		—
Expected return on plan assets	(56)		(13)		(70)		(11)		—		—
Amortization of net actuarial loss	—		—		—		—		(1)		—
Amortization of prior service cost	—		—		—		—		(1)		—

Settlements	3		—		—		—		—		—
Total non-service cost (benefit)	(18)		(4)		(49)		(6)		(1)		—
Net periodic benefit cost (benefit)	$	(18)	$	(2)	$	(49)	$	(5)	$	(1)	$	—


	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023			2022
Nine Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost:	$	—	$	6	$	—	$	3		$	—		$	—
Non-service cost (benefit):
Interest cost	103		27		64		17			2			1
Expected return on plan assets	(168)		(38)		(212)		(33)			(2)			(1)
Amortization of net actuarial loss	—		—		—		—			(1)			—
Amortization of prior service cost	—		—		—		—			(1)			—
Settlements	3		—		—		—			—			—
Total non-service cost (benefit)	(62)		(11)		(148)		(16)			(2)			—
Net periodic benefit cost (benefit)	$	(62)	$	(5)	$	(148)	$	(13)		$	(2)		$	—

The line items in which the service cost and non-service cost (benefit) components of net periodic cost (benefit) are included in the Consolidated statements of operations were as follows:


	Pension Benefit Plans				Other Postretirement Benefit Plans
Three Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	2		1		—		—
Total service cost	2		1		—		—
Non-service cost (benefit):
Losses and loss expenses	(1)		(5)		—		—
Administrative expenses	(21)		(50)		(1)		—
Total non-service cost (benefit)	(22)		(55)		(1)		—
Net periodic benefit cost (benefit)	$	(20)	$	(54)	$	(1)	$	—


	Pension Benefit Plans				Other Postretirement Benefit Plans
Nine Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	6		3		—		—
Total service cost	6		3		—		—
Non-service cost (benefit):
Losses and loss expenses	(6)		(15)		—		—
Administrative expenses	(67)		(149)		(2)		—
Total non-service cost (benefit)	(73)		(164)		(2)		—
Net periodic benefit cost (benefit)	$	(67)	$	(161)	$	(2)	$	—

Other Income and Expense

9 Months Ended

Sep. 30, 2023

Other Income and Expenses [Abstract]

Other Income and Expense Disclosure

Other income and expense


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Equity in net income (loss) of partially-owned entities	$	150	$	(111)	$	610	$	180
Gains (losses) from fair value changes in separate account assets (1)	(19)		(67)		(56)		(116)
Asset management and performance fee revenue	55		—		55		—
Asset management and performance fee expense	(33)		—		(33)		—
Federal excise and capital taxes	(6)		(6)		(17)		(15)
Other	7		(18)		(9)		(40)
Total	$	154	$	(202)	$	550	$	9

(1) Related to gains (losses) from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP.

Equity in net income of partially-owned entities includes our share of net income or loss, both underlying operating income and mark-to-market movement, related to partially-owned investment companies (private equity) where we own more than three percent, and partially-owned insurance companies. This line item includes mark-to-market gains (losses) on private equities of $51 million and $290 million for the three and nine months ended September 30, 2023, respectively, and $(190) million and $(69) million, respectively, for the prior year periods.

Other income and expense includes net income attributable to our investment in Huatai under the equity method of accounting comprising income of $36 million through June 30, 2023, and $28 million and $83 million for the three and nine months ended September 30, 2022, respectively. Effective July 1, 2023, we discontinued the equity method of accounting and include the results of operations of Huatai in our consolidated results.

Also included in Other income and expense are gains (losses) from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP. The offsetting movement in the separate account liabilities is included in Policy benefits in the Consolidated statements of operations.

Asset management and performance fee revenue and expense primarily relate to the management of third-party assets by Huatai's asset management business, which is unrelated to Huatai Group's core insurance operations. These revenues and expenses are recognized in the period in which the services are performed.

Certain federal excise and capital taxes incurred as a result of capital management initiatives are included in Other income and expense as these are considered capital transactions and are excluded from underwriting results. Bad debt expense for uncollectible premiums is also included in Other income and expense.

Segment information

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Segment information

Chubb operates through six business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. These segments distribute their products through various forms of brokers, agencies, and direct marketing programs. All business segments have established relationships with reinsurance intermediaries. Commencing in the third quarter of 2023, the results of Huatai Group's life and asset management business are included in the Life Insurance segment, and the results of Huatai Group's P&C business are included in the Overseas General Insurance segment. Results for Huatai Group’s non-insurance operations, comprising real estate and holding company activity, are included in Corporate. Commencing in the third quarter of 2022, the results of Cigna's business in Asia are included in our Life Insurance segment and, to a lesser extent, Overseas General Insurance segment according to the nature of the business written.

Management uses underwriting income (loss) as the basis for segment performance for its P&C operations. P&C underwriting income (loss) excludes the Life Insurance segment and is calculated by subtracting Losses and loss expenses, Policy benefits, Policy acquisition costs, and Administrative expenses from Net premiums earned. Segment income (loss) includes Underwriting income (loss), Net investment income (loss), and Other operating income and expense items such as each segment's share of the operating income (loss) related to partially-owned entities and miscellaneous income and expense items for which the segments are held accountable. Our main measure of segment performance is Segment income (loss), which also includes Amortization of purchased intangibles acquired by the segment. We determined that this definition of Segment income (loss) is appropriate and aligns with how the business is managed. We continue to evaluate our segments as our business continues to evolve and may further refine our segments and Segment income (loss) measures.

Revenue and expenses managed at the corporate level, including Net realized gains (losses), Market risk benefits gains (losses), Interest expense, Cigna integration expenses, Income tax, and Net income (loss) attributable to noncontrolling interests are reported within Corporate. Cigna integration expenses are one-time costs that are directly attributable to third-party consulting fees, employee-related retention costs, and other professional and legal fees primarily related to the acquisition of Cigna's business in Asia. These items are not allocated to the segment level as they are one-time in nature and are not related to the ongoing business activities of the segment. The Chief Executive Officer does not manage segment results or allocate resources to segments when considering these costs, and therefore are excluded from our definition of Segment income (loss).

Certain items are presented in a different manner for segment reporting purposes than in the Consolidated Financial Statements. These items are reconciled to the consolidated presentation in the Segment measure reclass column below and include:

•Losses and loss expenses include realized gains and losses on crop derivatives. These derivatives were purchased to provide economic benefit, in a manner similar to reinsurance protection, in the event that a significant decline in commodity pricing impacts underwriting results. We view gains and losses on these derivatives as part of the results of our underwriting operations, and therefore realized gains (losses) from these derivatives are reclassified to Losses and loss expenses.

•Policy benefits include fair value changes on separate accounts that do not qualify for separate accounting under GAAP. These gains and losses have been reclassified from Other (income) expense. We view gains and losses from fair value changes in both separate account assets and liabilities as part of the results of our underwriting operations, and therefore these gains and losses are reclassified to Policy benefits.

•Net investment income includes investment income reclassified from Other (income) expense related to partially-owned investment companies (private equity partnerships) where our ownership interest is in excess of three percent. We view investment income from these equity-method private equity partnerships as Net investment income for segment reporting purposes.

The following tables present the Statement of Operations by segment:


For the Three Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated



Net premiums written	$	5,132	$	1,527	$	1,521	$	3,211	$	261	$	1,452	$	—	$	—	$	13,104
Net premiums earned	4,735		1,407		1,540		3,311		239		1,442		—		—		12,674
Losses and loss expenses	3,025		900		1,356		1,635		116		20		61		(7)		7,106
Policy benefits	—		—		—		91		—		866		—		(19)		938
Policy acquisition costs	640		287		76		827		69		279		—		—		2,178
Administrative expenses	323		84		3		327		9		216		98		—		1,060
Underwriting income (loss)	747		136		105		431		45		61		(159)		26		1,392
Net investment income	780		94		12		248		47		211		14		(92)		1,314
Other (income) expense	6		2		—		(10)		—		(28)		(51)		(73)		(154)
Amortization expense of purchased intangibles	—		3		6		19		—		12		44		—		84
Segment income (loss)	$	1,521	$	225	$	111	$	670	$	92	$	288	$	(138)	$	7	$	2,776
Net realized gains (losses)													(96)		(7)		(103)
Market risk benefits gains (losses)													(32)		—		(32)
Interest expense													174		—		174
Cigna integration expenses													14		—		14
Income tax expense													413		—		413
Net income (loss)													(867)		—		2,040
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(864)	$	—	$	2,043


For the Three Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated



Net premiums written	$	4,722	$	1,392	$	1,723	$	2,645	$	265	$	1,265	$	—	$	—	$	12,012
Net premiums earned	4,283		1,334		1,673		2,741		255		1,244		—		—		11,530
Losses and loss expenses	3,036		857		1,444		1,333		311		27		74		(19)		7,063
Policy benefits	—		—		—		108		—		666		—		(67)		707
Policy acquisition costs	583		274		68		720		59		266		—		—		1,970
Administrative expenses	272		71		3		264		8		174		91		—		883
Underwriting income (loss)	392		132		158		316		(123)		111		(165)		86		907
Net investment income	589		76		9		151		71		147		5		(69)		979
Other (income) expense	6		1		1		(2)		—		4		194		(2)		202
Amortization expense of purchased intangibles	—		2		7		12		—		2		46		—		69
Segment income (loss)	$	975	$	205	$	159	$	457	$	(52)	$	252	$	(400)	$	19	$	1,615
Net realized gains (losses)													(437)		(19)		(456)
Market risk benefits gains (losses)													69		—		69
Interest expense													150		—		150
Cigna integration expenses													23		—		23
Income tax expense													263		—		263
Net income (loss)													$	(1,204)	$	—	$	792


For the Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated



Net premiums written	$	14,575	$	4,404	$	2,581	$	9,359	$	831	$	4,015	$	—	$	—	$	35,765
Net premiums earned	13,710		4,084		2,334		9,005		720		3,962		—		—		33,815
Losses and loss expenses	8,625		2,634		2,003		4,139		319		87		133		(3)		17,937
Policy benefits	—		—		—		338		—		2,283		—		(56)		2,565
Policy acquisition costs	1,867		836		128		2,286		196		829		—		—		6,142
Administrative expenses	934		247		9		899		27		553		290		—		2,959
Underwriting income (loss)	2,284		367		194		1,343		178		210		(423)		59		4,212
Net investment income	2,204		262		43		636		144		525		28		(276)		3,566
Other (income) expense	18		2		—		(29)		(1)		(69)		(251)		(220)		(550)
Amortization expense of purchased intangibles	—		8		19		52		—		18		129		—		226
Segment income (loss)	$	4,470	$	619	$	218	$	1,956	$	323	$	786	$	(273)	$	3	$	8,102
Net realized gains (losses)													(481)		(3)		(484)
Market risk benefits gains (losses)													(154)		—		(154)
Interest expense													499		—		499
Cigna integration expenses													51		—		51
Income tax expense													1,189		—		1,189
Net income (loss)													$	(2,647)	$	—	$	5,725
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(2,644)	$	—	$	5,728


For the Nine Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated



Net premiums written	$	13,426	$	3,998	$	2,523	$	8,364	$	780	$	2,403	$	—	$	—	$	31,494
Net premiums earned	12,645		3,852		2,217		8,065		712		2,325		—		—		29,816
Losses and loss expenses	7,979		2,343		1,830		3,772		565		78		275		(9)		16,833
Policy benefits	—		—		—		282		—		1,275		—		(116)		1,441
Policy acquisition costs	1,701		792		111		2,096		178		537		—		—		5,415
Administrative expenses	814		213		4		811		27		346		264		—		2,479
Underwriting income (loss)	2,151		504		272		1,104		(58)		89		(539)		125		3,648
Net investment income (loss)	1,600		199		23		460		232		359		(4)		(180)		2,689
Other (income) expense	12		3		1		3		1		(38)		73		(64)		(9)
Amortization expense of purchased intangibles	—		7		20		40		—		7		137		—		211
Segment income (loss)	$	3,739	$	693	$	274	$	1,521	$	173	$	479	$	(753)	$	9	$	6,135
Net realized gains (losses)													(927)		(9)		(936)
Market risk benefits gains (losses)													85		—		85
Interest expense													416		—		416
Cigna integration expenses													26		—		26
Income tax expense													907		—		907
Net income (loss)													$	(2,944)	$	—	$	3,935

Underwriting assets are reviewed in total by management for purposes of decision-making. Other than Unpaid losses and loss expenses, Future policy benefits, Reinsurance recoverables, DAC, VOBA, Goodwill and Other intangible assets, Chubb does not allocate assets to its segments.

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-15

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//280/tableOfContent

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-26

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-34

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Earnings per share

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Earnings per share


	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars, except share and per share data)			As Adjusted				As Adjusted
Numerator:
Net income	$	2,040	$	792	$	5,725	$	3,935
Net loss attributable to noncontrolling interests	(3)		—		(3)		—
Net income attributable to Chubb	$	2,043	$	792	$	5,728	$	3,935
Denominator:
Denominator for basic earnings per share attributable to Chubb:
Weighted-average shares outstanding	409,505,454		416,542,101		412,076,470		421,290,032
Denominator for diluted earnings per share attributable to Chubb:
Share-based compensation plans	3,100,505		3,076,855		3,288,940		3,733,449
Weighted-average shares outstanding and assumed conversions	412,605,959		419,618,956		415,365,410		425,023,481
Basic earnings per share attributable to Chubb	$	4.99	$	1.90	$	13.90	$	9.34
Diluted earnings per share attributable to Chubb	$	4.95	$	1.89	$	13.79	$	9.26
Potential anti-dilutive share conversions	2,562,206		1,693,502		2,330,821		1,377,784

Excluded from weighted-average shares outstanding and assumed conversions is the impact of securities that would have been anti-dilutive during the respective periods. These securities consisted of stock options in which the underlying exercise prices were greater than the average market prices of our Common Shares. Refer to Note 12 to the Consolidated Financial Statements of our 2022 Form 10-K for additional information on stock options.

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income (loss)	$ 2,043	$ 792	$ 5,728	$ 3,935

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482765/220-10-50-6

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-8

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-9

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-4

Reference 13: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-10

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483581/946-220-45-7

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(18))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(9))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(1)(d))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 60B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-60B

Reference 32: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-7

Reference 35: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1A

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1B

Reference 38: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(20))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

Reference 39: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(22))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2023 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Terminated	false
John J. Lupica [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On July 31, 2023, John J. Lupica, Vice Chairman, Chubb Group, and President, North America Insurance, adopted a "Rule 10b5-1 trading arrangement" as defined under Item 408 of SEC Regulation S-K. The arrangement is scheduled to expire on October 30, 2024, subject to earlier termination in accordance with its terms. The aggregate number of Chubb common shares authorized to be sold pursuant to the trading arrangement is 17,810.
Name	John J. Lupica
Title	Vice Chairman, Chubb Group, and President, North America Insurance
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	July 31, 2023
Aggregate Available	17,810

General and significant accounting policies (Policies)

9 Months Ended

Sep. 30, 2023

Basis of presentation

Chubb Limited is a holding company incorporated in Zurich, Switzerland. Chubb Limited, through its subsidiaries, provides a broad range of insurance and reinsurance products to insureds worldwide. Our results are reported through the following business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. Refer to Note 18 for additional information.

The interim unaudited consolidated financial statements include the accounts of Chubb Limited and its subsidiaries (collectively, Chubb, we, us, or our), over which Chubb exercises control, including Huatai Group, our majority-owned subsidiary, and minority-owned entities such as variable interest entities (VIEs) in which Chubb is considered the primary beneficiary. Noncontrolling interests on the consolidated financial statements represent the portion of majority-owned subsidiaries and VIEs in which we do not have direct equity ownership. These interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) and, in the opinion of management, reflect all adjustments necessary for a fair statement of the results and financial position for such periods. All significant intercompany accounts and transactions, including internal reinsurance transactions, have been eliminated.

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Accordingly, Chubb discontinued the equity method of accounting for its investment in Huatai Group and applied consolidation accounting. Business activity for, and the financial position of, Huatai Group is reported at 100 percent on the Consolidated Financial Statements starting when Chubb obtained control of Huatai Group on July 1, 2023. The relevant amounts attributable to shareholders other than Chubb (representing approximately 30.4 percent of Huatai Group) are reflected under Noncontrolling interests, Net income (loss) attributable to noncontrolling interests, and Comprehensive income (loss) attributable to noncontrolling interests in the Consolidated Financial Statements. Refer to Note 2 for additional information.

Huatai Group's life and asset management businesses are included in the Life Insurance segment, and Huatai Group's P&C business is included in the Overseas General Insurance segment. Results for Huatai Group's non-insurance operations, comprising real estate and holding company activity, are included in Corporate.

The results of operations and cash flows for any interim period are not necessarily indicative of the results for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our 2022 Form 10-K.

Accounting guidance adopted

Accounting guidance adopted in 2023

Targeted Improvements to the Accounting for Long-Duration Contracts

Effective January 1, 2023, we adopted new guidance on the accounting for long-duration contracts (LDTI). The new accounting guidance requires more frequent updating of assumptions and a standardized discount rate for the future policy benefit liability, a requirement to use the fair value measurement model for policies with market risk benefits, simplified amortization of deferred acquisition costs, and enhanced disclosures.

With the exception of market risk benefits, we adopted this guidance on a modified retrospective basis. Under the modified retrospective basis, the liability for future policy benefits is updated to remove any amounts related to changes to the original discount rate at January 1, 2021 (the transition date) in AOCI and future cash flow assumptions are applied to contracts in force. The liability for future policy benefits prior to the transition date continues to use the original discount rate (interest accretion rate). The guidance for long-duration contracts applicable to market risk benefits, primarily assumed reinsurance programs involving minimum benefit guarantees under variable annuity contracts, was adopted on a retrospective transition approach. Under the retrospective transition approach, we calculated the fair value of market risk benefits which were previously accounted for under an insurance accounting model and recognized an adjustment to retained earnings as of January 1, 2021.

On January 1, 2021, we recognized a cumulative effect adjustment and increased beginning retained earnings by $52 million, and decreased AOCI by $1.8 billion. Results for the prior reporting periods in this report are presented in accordance with the new guidance. We also adopted the required disclosures in Note 6 Deferred acquisition costs, Note 9 Future policy benefits, Note 10 Policyholders’ account balances, Note 11 Market risk benefits, and Note 12 Separate accounts.

The impact of adoption of the new guidance on our historical financial statements is as follows:


	December 31, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated balance sheet
Reinsurance recoverable on losses and loss expenses	$	18,901	$	(42)	$	18,859
Reinsurance recoverable on policy benefits	303		(1)		302
Deferred policy acquisition costs	5,788		243		6,031
Value of business acquired	3,596		106		3,702

Prepaid reinsurance premiums	3,140		(4)		3,136
Investments in partially-owned insurance companies	2,877		(370)		2,507

Unpaid losses and loss expenses	76,323		(576)		75,747
Unearned premiums	20,360		(647)		19,713

Future policy benefits	10,120		356		10,476
Market risk benefits	—		800		800
Insurance and reinsurance balances payable	7,795		(15)		7,780

Deferred tax liabilities	292		85		377
Retained Earnings	48,334		(29)		48,305
Accumulated other comprehensive income (loss)	(10,193)		8		(10,185)

Excluded from the table above is the reclassification of Separate account assets, Separate account liabilities, and Policyholders' account balances as separate line items on the Consolidated balance sheets. Separate accounts assets were previously classified in Other assets, and Separate account liabilities and Policyholders' account balances were previously classified in Accounts payable, accrued expenses, and other liabilities.


	Three Months Ended						Nine Months Ended
	September 30, 2022						September 30, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted		As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statements of operations and comprehensive income
Net premiums written	$	12,020	$	(8)	$	12,012	$	31,521	$	(27)	$	31,494
Net premiums earned	11,535		(5)		11,530		29,838		(22)		29,816
Net realized gains (losses)	(384)		(72)		(456)		(787)		(149)		(936)
Market risk benefits gains (losses)	—		69		69		—		85		85
Losses and loss expenses	7,279		(216)		7,063		17,474		(641)		16,833
Policy benefits	486		221		707		790		651		1,441
Policy acquisition costs	1,975		(5)		1,970		5,451		(36)		5,415

Other (income) expense	188		14		202		(21)		12		(9)
Income tax expense	265		(2)		263		913		(6)		907
Net Income	812		(20)		792		4,001		(66)		3,935
Other comprehensive income
Change in current discount rate on future policy benefits	—		479		479		—		1,546		1,546
Change in instrument-specific credit risk on market risk benefits	—		8		8		—		48		48
Income tax benefit related to OCI items	165		(56)		109		1,222		(151)		1,071
Comprehensive income (loss)	(3,093)		435		(2,658)		(8,529)		1,422		(7,107)


	Nine Months Ended
	September 30,2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statement of cash flows













Net cash flows from operating activities	$	8,592	$	8	$	8,600





Net cash flows used for financing activities	(2,722)		(8)		(2,730)

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of future policy benefits:


	Life Insurance						Overseas General Insurance				Offsetting Equity Line Classification
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		A&H		Total
Future policy benefits
Balance – December 31, 2020 (1)	$	391	$	2,578	$	2,270	$	72	$	754	$	6,065

Effect of change in current discount rate	63		1,189		299		17		19		1,587		AOCI
Balance – January 1, 2021	$	454	$	3,767	$	2,569	$	89	$	773	$	7,652

(1) Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of market risk benefits:


(in millions of U.S. dollars)			Offsetting Equity Line Classification
Market risk benefits
Balance – December 31, 2020	$	1,138
Cumulative effect of changes in instrument-specific credit risk between original contract issuance date and transition date (1)	84		AOCI
Other fair value adjustments	(59)		Retained Earnings
Balance – January 1, 2021	$	1,163

(1) Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

Deferred policy acquisition costs and value of business acquired

Deferred policy acquisition costs (DAC)

Policy acquisition costs on long-duration contracts are grouped by contract type and issue year into cohorts consistent with the grouping used in estimating the associated liability. Deferred policy acquisition costs are amortized on a constant level basis over the expected term of the related contracts to approximate straight-line amortization. The constant level basis used for amortization is the face amount in force and is projected using the same assumptions used in estimating the liability for future policy benefits. If those projected assumptions change in future periods, they will be reflected in the cohort level amortization basis at that time. Unexpected changes in the in-force portfolio, due to variances in mortality and lapse experience, are recognized over the contract term. Changes in future mortality and lapse assumptions are also recognized prospectively over the remaining expected contract term.

Huatai asset management non-premium revenue

For traditional and limited-payment contracts, contracts are grouped into cohorts by contract type and issue year to determine a liability for future policy benefits. The future policy benefit liability (FPBL) is the present value of estimated future policy benefits to be paid to or on behalf of policyholders and certain related expenses less the present value of estimated future net premiums to be collected from policyholders, and is accrued as premium revenue is recognized. The valuation of this liability requires management to make estimates and assumptions regarding expenses, mortality, and persistency. Estimates are primarily based on historical experience. Actual results could differ materially from these estimates.

The liability is adjusted for differences between actual and expected experience. With the exception of the expense assumption, we review our future cash flow assumptions at least annually to determine if the net premium ratio (NPR), the mechanism used to record the liability as premium is earned, used to calculate the liability should be changed at that time. We have elected to use expense assumptions that are locked in at contract inception and are not subsequently reviewed or updated. Each quarter, we update the cash flows expected over the entire life of each cohort for actual historical experience and projected future cash

flows. These updated cash flows are used to calculate the revised NPR, which is used to derive an updated FPBL as of the beginning of the current reporting period, discounted at the original contract issuance discount rate. This amount is then compared to the carrying amount of the liability as of that same date, but before the updating of cash flow assumptions, to determine the current period change in FPBL. This current period change in the liability is the liability remeasurement gain or loss and is recorded in Policy benefits in the Consolidated statements of operations. In subsequent periods, the revised NPR is used to measure the FPBL until future revisions become required.

For traditional and limited-payment contracts, the discount rate assumption based on an upper-medium grade fixed-income instrument yield. An equivalent rate is derived based on A-credit-rated fixed-income instruments with similar duration to the liability. The discount rate assumption is updated quarterly and used to remeasure the liability at each reporting date, with the resulting change reflected in Other comprehensive income. For liability cash flows that are projected beyond the duration of market-observable A-credit-rated fixed-income instruments, we use the last market-observable yield level, as the basis for a linear interpolation to determine yield assumptions for durations that do not have market-observable yields.

Deferred profit liability

For limited-payment products, gross premiums received in excess of net premiums are deferred at initial recognition as a deferred profit liability (DPL) and recorded as a component of Future policy benefits in the Consolidated balance sheets. Net premiums are measured using actual cash flows and future cash flow assumptions consistent with those used in the measurement of the liability for future policy benefits and remeasured quarterly. The DPL is amortized in proportion to the discounted in-force policies. Interest is accreted on the balance of the DPL using the discount rate consistent with the interest accretion on the FPBL. The recalculated DPL, including adjusted amortization through the current period, is compared to the current carrying amount and the difference is recognized as an adjustment to Policy benefits in the Consolidated statements of operations as a remeasurement gain or loss.

Market Risk Benefit

Market risk benefits

Chubb reinsures various death and living benefit guarantees associated with variable annuities issued primarily in the United States, which are referred to as market risk benefits. These reinsurance contracts provide both protection to the ceding entity from other-than-nominal capital market risk and expose us to other-than-nominal capital market risk.

Market risk benefits are measured at fair value using a valuation model based on current net exposures, market data, our experience, and other factors. Changes in fair value are recognized in Market risk benefits gains (losses) in the Consolidated statements of operations, except the change in fair value due to a change in the instrument-specific credit risk, which is recognized in other comprehensive income. Refer to Note 11 for additional information.

Asset management and performance fee revenue and expensesHuatai's asset management companies recognize revenue and expenses unrelated to Chubb's core insurance operations from the management of third-party assets. These revenues include fixed-rate management fees, which are recognized in the period in which the services are performed, and asset performance fees, which are recognized to the extent it is probable that a significant reversal will not occur. These fees and expenses are included in Other (income) expense on the Consolidated statements of operations. Refer to Note 17 for additional information.

loans and leases receivable policy

Private debt held-for-investment, at amortized costPrivate debt held-for-investment are investments related principally to the funding of public and private projects that are mostly infrastructure related, and were acquired as part of Huatai’s investment portfolio upon consolidation. They have stated interest rates and maturity dates with fixed or determinable payments. Private debt held-for-investment are carried at amortized cost, net of a valuation allowance for credit losses. Interest income is recorded when earned.

Other Investment

Other investments

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai’s asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities.

Other investments principally comprised these fixed maturities. These securities are reported at fair value with changes in fair value reported through the Consolidated statements of operations within Net realized gains (losses) as required under investment company accounting standards.

Consolidation, Variable Interest Entity, Policy

Consolidation of variable interest entities (VIEs)Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai's asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities. These entities are created for varied purposes during the ordinary course of business, such as to obtain returns from investments, and to collect management fees for the assets managed on behalf of the third party investors. While many investors may not be related parties, Huatai invests in these funds at various ownership percentages. We determined that we are the primary beneficiary of these VIEs and generally consolidate when we hold an economic interest of 10 percent or more. The consolidation of VIEs records 100 percent of the underlying assets and liabilities of the mutual funds within the Consolidated balance sheets. The relevant amounts attributable to investors other than Chubb are reflected as Noncontrolling interests. Where Huatai's ownership in these sponsored investment products is less than 10 percent, we generally would not expect to be the primary beneficiary of these VIEs. Refer to Note 3 g) for additional information.

Fair value measurements (Fair Value Measurement Policy) (Policies)	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurement, Policy	Fair value of financial assets and financial liabilities is estimated based on the framework established in the fair value accounting guidance. The guidance defines fair value as the price to sell an asset or transfer a liability (an exit price) in an orderly transaction between market participants and establishes a three-level valuation hierarchy based on the reliability of the inputs. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data. The three levels of the hierarchy are as follows: •Level 1 – Unadjusted quoted prices for identical assets or liabilities in active markets; •Level 2 – Includes, among other items, inputs other than quoted prices that are observable for the asset or liability such as interest rates and yield curves, quoted prices for similar assets and liabilities in active markets, and quoted prices for identical or similar assets and liabilities in markets that are not active; and •Level 3 – Inputs that are unobservable and reflect management’s judgments about assumptions that market participants would use in pricing an asset or liability.

General and significant accounting policies (Tables)

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounting Standards Update and Change in Accounting Principle

The impact of adoption of the new guidance on our historical financial statements is as follows:


	December 31, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated balance sheet
Reinsurance recoverable on losses and loss expenses	$	18,901	$	(42)	$	18,859
Reinsurance recoverable on policy benefits	303		(1)		302
Deferred policy acquisition costs	5,788		243		6,031
Value of business acquired	3,596		106		3,702

Prepaid reinsurance premiums	3,140		(4)		3,136
Investments in partially-owned insurance companies	2,877		(370)		2,507

Unpaid losses and loss expenses	76,323		(576)		75,747
Unearned premiums	20,360		(647)		19,713

Future policy benefits	10,120		356		10,476
Market risk benefits	—		800		800
Insurance and reinsurance balances payable	7,795		(15)		7,780

Deferred tax liabilities	292		85		377
Retained Earnings	48,334		(29)		48,305
Accumulated other comprehensive income (loss)	(10,193)		8		(10,185)

Excluded from the table above is the reclassification of Separate account assets, Separate account liabilities, and Policyholders' account balances as separate line items on the Consolidated balance sheets. Separate accounts assets were previously classified in Other assets, and Separate account liabilities and Policyholders' account balances were previously classified in Accounts payable, accrued expenses, and other liabilities.


	Three Months Ended						Nine Months Ended
	September 30, 2022						September 30, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted		As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statements of operations and comprehensive income
Net premiums written	$	12,020	$	(8)	$	12,012	$	31,521	$	(27)	$	31,494
Net premiums earned	11,535		(5)		11,530		29,838		(22)		29,816
Net realized gains (losses)	(384)		(72)		(456)		(787)		(149)		(936)
Market risk benefits gains (losses)	—		69		69		—		85		85
Losses and loss expenses	7,279		(216)		7,063		17,474		(641)		16,833
Policy benefits	486		221		707		790		651		1,441
Policy acquisition costs	1,975		(5)		1,970		5,451		(36)		5,415

Other (income) expense	188		14		202		(21)		12		(9)
Income tax expense	265		(2)		263		913		(6)		907
Net Income	812		(20)		792		4,001		(66)		3,935
Other comprehensive income
Change in current discount rate on future policy benefits	—		479		479		—		1,546		1,546
Change in instrument-specific credit risk on market risk benefits	—		8		8		—		48		48
Income tax benefit related to OCI items	165		(56)		109		1,222		(151)		1,071
Comprehensive income (loss)	(3,093)		435		(2,658)		(8,529)		1,422		(7,107)


	Nine Months Ended
	September 30,2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statement of cash flows













Net cash flows from operating activities	$	8,592	$	8	$	8,600





Net cash flows used for financing activities	(2,722)		(8)		(2,730)

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of future policy benefits:


	Life Insurance						Overseas General Insurance				Offsetting Equity Line Classification
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		A&H		Total
Future policy benefits
Balance – December 31, 2020 (1)	$	391	$	2,578	$	2,270	$	72	$	754	$	6,065

Effect of change in current discount rate	63		1,189		299		17		19		1,587		AOCI
Balance – January 1, 2021	$	454	$	3,767	$	2,569	$	89	$	773	$	7,652

(1) Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of market risk benefits:


(in millions of U.S. dollars)			Offsetting Equity Line Classification
Market risk benefits
Balance – December 31, 2020	$	1,138
Cumulative effect of changes in instrument-specific credit risk between original contract issuance date and transition date (1)	84		AOCI
Other fair value adjustments	(59)		Retained Earnings
Balance – January 1, 2021	$	1,163

(1) Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

Acquisitions (Tables)

9 Months Ended

Sep. 30, 2023

Sep. 30, 2022

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table summarizes Chubb's best estimate of fair value of the assets acquired and liabilities assumed on July 1, 2023. The fair value of assets and liabilities are preliminary and may change with offsetting adjustments to goodwill. Chubb may make further adjustments to its purchase price allocation and the fair value of noncontrolling interest through the end of the permissible one-year measurement period.


Preliminary estimate of Huatai Group assets and liabilities consolidated	July 1
(in millions of U.S. dollars)	2023
Assets
Investments and Cash	$	13,346
Accrued investment income	60
Insurance and reinsurance balances receivable	277
Reinsurance recoverable on losses and loss expenses	581
Reinsurance recoverable on future policy benefits	27
Value of business acquired	309
Goodwill and intangible assets	5,049
Other assets	748
Total assets	$	20,397
Liabilities
Unpaid losses and loss expenses	$	831
Unearned premiums	800
Future policy benefits	2,287
Policyholders' account balances	4,014
Insurance and reinsurance balances payable	644
Accounts payable, accrued expenses, and other liabilities	702
Deferred tax liabilities	232
Repurchase agreements	1,269
Total liabilities	$	10,779

Net acquired assets, including goodwill, attributable to Chubb	4,408
Net acquired assets, attributable to noncontrolling interests	5,210
Net acquired assets, including goodwill	$	9,618

The following table summarizes the fair value of the assets acquired and liabilities assumed at July 1, 2022:


Assets acquired and liabilities assumed from Cigna's business in Asia	July 1
(in millions of U.S. dollars)	2022
Assets
Investments and Cash	$	5,274
Accrued investment income	33
Insurance and reinsurance balances receivable	52
Reinsurance recoverable on losses and loss expenses	3
Reinsurance recoverable on future policy benefits	85
Value of business acquired	3,633
Goodwill and intangible assets	1,486
Other assets	648
Total assets	$	11,214
Liabilities
Unpaid losses and loss expenses	$	12
Unearned premiums	60
Future policy benefits	3,856
Insurance and reinsurance balances payable	115
Accounts payable, accrued expenses, and other liabilities	926
Deferred tax liabilities	886
Total liabilities	$	5,855

Net acquired assets, including goodwill	5,359
Total	$	11,214

Schedule of Business Acquisitions, by Acquisition

The following table summarizes the results of the acquired Huatai Group operations that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2023:


(in millions of U.S. dollars)
Total revenues	$	389
Net loss	$	(11)
Net loss attributable to Chubb	$	(9)

The following table summarizes the results of the acquired Cigna business in Asia that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2022:


(in millions of U.S. dollars)
Total revenues	$	681
Net income	$	17

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination

The preliminary purchase price allocation to intangible assets recorded in connection with the Huatai Group acquisition and their related useful lives at July 1, 2023, are as follows:


(in millions of U.S. dollars)	Amount		Weighted-average useful life
Definite life
Agency distribution relationships	$	332	20 years
Asset management customer contracts	94		16 years
Unearned premium reserves (UPR) intangible asset	95		3 years
Land use rights	569		31 years
Technology	45		6 years
Indefinite life
Trademarks	398		Indefinite
Asset management mutual funds	122		Indefinite
Total identified intangible assets	$	1,655

Business Acquisition, Pro Forma Information

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of a controlling majority interest in Huatai Group that occurred on July 1, 2023, had instead occurred on January 1, 2022. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition of a controlling majority interest been consummated on January 1, 2022, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets.


	Three Months Ended				Nine Months Ended
Pro forma:	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Net premiums earned	$	12,674	$	11,952	$	34,605	$	30,996
Total revenues	$	13,755	$	12,612	$	37,589	$	33,019
Net income	$	1,905	$	787	$	5,595	$	3,975
Net income attributable to Chubb	$	1,912	$	777	$	5,587	$	3,935

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of Cigna's business in Asia that occurred on July 1, 2022, had instead occurred on January 1, 2021. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition been consummated on January 1, 2021, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets and recognition of interest expense associated with the repurchase agreement transactions used to effect the acquisition.


	Three Months Ended		Nine Months Ended
Pro forma:	September 30		September 30
(in millions of U.S. dollars)	2022		2022
Net premiums earned	$	11,530	$	31,341
Total revenues	$	12,124	$	33,161
Net income	$	837	$	4,172

Investments (Tables)

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule Of Amortized Cost and Fair Value of Available-for-sale Securities


September 30, 2023	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	3,944	$	—	$	2	$	(265)	$	3,681
Non-U.S.	34,912		(53)		239		(2,381)		32,717
Corporate and asset-backed securities	44,932		(104)		61		(4,034)		40,855
Mortgage-backed securities	22,402		(1)		6		(2,802)		19,605
Municipal	3,165		—		2		(259)		2,908
	$	109,355	$	(158)	$	310	$	(9,741)	$	99,766


December 31, 2022	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	2,792	$	—	$	5	$	(171)	$	2,626
Non-U.S.	28,064		(59)		108		(2,205)		25,908
Corporate and asset-backed securities	40,547		(107)		49		(3,534)		36,955
Mortgage-backed securities	17,871		(3)		4		(2,021)		15,851
Municipal	4,081		—		8		(209)		3,880
	$	93,355	$	(169)	$	174	$	(8,140)	$	85,220

Schedule Of Amortized Cost And Fair Value Of HTM Fixed Maturities


December 31, 2022	Amortized Cost		Valuation Allowance		Net Carrying Value		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Held to maturity
U.S. Treasury / Agency	$	1,417	$	—	$	1,417	$	1	$	(48)	$	1,370
Non-U.S.	1,140		(4)		1,136		—		(82)		1,054
Corporate and asset-backed securities	1,733		(28)		1,705		1		(126)		1,580
Mortgage-backed securities	1,456		(1)		1,455		—		(104)		1,351
Municipal	3,136		(1)		3,135		1		(52)		3,084
	$	8,882	$	(34)	$	8,848	$	3	$	(412)	$	8,439

Debt Securities, Held-to-maturity, Credit Quality Indicator

The following table presents the amortized cost of our held to maturity securities according to S&P rating:


	December 31, 2022
(in millions of U.S. dollars, except for percentages)		Amortized cost		% of Total
AAA		$	1,612	18	%
AA		5,023		57	%
A		1,634		18	%
BBB		593		7	%
BB		20		—	%

Total		$	8,882	100	%

Schedule Of Fixed Maturities By Contractual Maturity

The following table presents fixed maturities by contractual maturity:


	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Carrying Value		Fair Value		Net Carrying Value		Fair Value
Available for sale
Due in 1 year or less	$	4,805	$	4,805	$	2,962	$	2,962
Due after 1 year through 5 years	31,738		31,738		24,791		24,791
Due after 5 years through 10 years	27,452		27,452		26,679		26,679
Due after 10 years	16,166		16,166		14,937		14,937
	80,161		80,161		69,369		69,369
Mortgage-backed securities	19,605		19,605		15,851		15,851
	$	99,766	$	99,766	$	85,220	$	85,220
Held to maturity
Due in 1 year or less	$	—	$	—	$	1,015	$	1,003
Due after 1 year through 5 years	—		—		3,658		3,531
Due after 5 years through 10 years	—		—		1,460		1,423
Due after 10 years	—		—		1,260		1,131
	—		—		7,393		7,088
Mortgage-backed securities	—		—		1,455		1,351
	$	—	$	—	$	8,848	$	8,439

Schedule Of Aggregate Fair Value And Gross Unrealized Loss By Length Of Time The Security Has Continuously Been In An Unrealized Loss Position

The following tables present, for AFS fixed maturities in an unrealized loss position (including securities on loan) that are not deemed to have expected credit losses, the aggregate fair value and gross unrealized loss by length of time the security has been in an unrealized loss position:


	0 – 12 Months				Over 12 Months				Total
September 30, 2023	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)
U.S. Treasury / Agency	$	1,108	$	(32)	$	2,449	$	(233)	$	3,557	$	(265)
Non-U.S.	8,591		(280)		16,631		(1,670)		25,222		(1,950)
Corporate and asset-backed securities	10,120		(362)		22,672		(2,441)		32,792		(2,803)
Mortgage-backed securities	5,827		(249)		13,450		(2,510)		19,277		(2,759)
Municipal	1,389		(51)		1,269		(208)		2,658		(259)
Total AFS fixed maturities	$	27,035	$	(974)	$	56,471	$	(7,062)	$	83,506	$	(8,036)


	0 – 12 Months				Over 12 Months				Total
December 31, 2022	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)

U.S. Treasury / Agency	$	2,152	$	(125)	$	386	$	(46)	$	2,538	$	(171)
Non-U.S.	15,538		(1,012)		5,490		(704)		21,028		(1,716)
Corporate and asset-backed securities	25,687		(1,793)		4,190		(552)		29,877		(2,345)
Mortgage-backed securities	10,561		(1,033)		4,770		(941)		15,331		(1,974)
Municipal	3,251		(152)		155		(48)		3,406		(200)
Total AFS fixed maturities	$	57,189	$	(4,115)	$	14,991	$	(2,291)	$	72,180	$	(6,406)

Debt Securities, Available-for-sale, Allowance for Credit Loss

The following table presents a roll-forward of valuation allowance for expected credit losses on fixed maturities:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Available for sale
Valuation allowance for expected credit losses - beginning of period	$	193	$	78	$	169	$	14


Provision for expected credit loss	34		91		172		169

Write-offs charged against the expected credit loss	(1)		—		(5)		—
Foreign currency revaluation	—		(2)		—		(2)
Recovery of expected credit loss	(68)		(20)		(178)		(34)
Valuation allowance for expected credit losses - end of period	$	158	$	147	$	158	$	147
Held to maturity
Valuation allowance for expected credit losses - beginning of period	$	—	$	34	$	34	$	35


Provision for expected credit loss	—		—		—		1


Recovery of expected credit loss	—		(1)		(34)		(3)
Valuation allowance for expected credit losses - end of period	$	—	$	33	$	—	$	33

Debt Securities, Held-to-maturity, Allowance for Credit Loss

The following table presents a roll-forward of valuation allowance for expected credit losses on fixed maturities:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Available for sale
Valuation allowance for expected credit losses - beginning of period	$	193	$	78	$	169	$	14


Provision for expected credit loss	34		91		172		169

Write-offs charged against the expected credit loss	(1)		—		(5)		—
Foreign currency revaluation	—		(2)		—		(2)
Recovery of expected credit loss	(68)		(20)		(178)		(34)
Valuation allowance for expected credit losses - end of period	$	158	$	147	$	158	$	147
Held to maturity
Valuation allowance for expected credit losses - beginning of period	$	—	$	34	$	34	$	35


Provision for expected credit loss	—		—		—		1


Recovery of expected credit loss	—		(1)		(34)		(3)
Valuation allowance for expected credit losses - end of period	$	—	$	33	$	—	$	33

Schedule of Realized Gain (Loss)

The following table presents the components of Net realized gains (losses):


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities:



Gross realized gains	$	97	$	144	$	116	$	545
Gross realized losses	(185)		(331)		(457)		(1,158)
Net (provision for) recovery of expected credit losses	34		(70)		44		(133)
Impairment (1)	(16)		(22)		(60)		(111)
Total fixed maturities	(70)		(279)		(357)		(857)
Equity securities	(100)		(80)		(61)		(287)

Private equities	40		(42)		75		17
Foreign exchange	(67)		202		(122)		546
Investment and embedded derivative instruments	9		(198)		(92)		(232)
Other derivative instruments	(7)		(19)		(6)		(9)
Other (2)	92		(40)		79		(114)
Net realized gains (losses) (pre-tax)	$	(103)	$	(456)	$	(484)	$	(936)

(1)Relates to certain securities we intended to sell and securities written to market entering default.

(2)The three and nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

Gain (Loss) on Securities

Realized gains and losses from Other investments, Equity securities and Private equities from the table above include sales of securities and unrealized gains and losses from fair value changes as follows:


									Three Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(100)	$	40	$	(61)	$	(80)	$	(42)	$	(122)
Less: Net gains (losses) recognized from sales of securities	—		(45)		—		(45)		(12)		—		(12)
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(55)	$	40	$	(16)	$	(68)	$	(42)	$	(110)


									Nine Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(61)	$	75	$	13	$	(287)	$	17	$	(270)
Less: Net gains (losses) recognized from sales of securities	—		(48)		—		(48)		406		—		406
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(13)	$	75	$	61	$	(693)	$	17	$	(676)

Fair Value, Investments, Entities that Calculate Net Asset Value Per Share


	Expected Liquidation Period of Underlying Assets	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)		Fair Value		Maximum Future Funding Commitments		Fair Value		Maximum Future Funding Commitments
Financial	2 to 10 Years	$	1,219	$	384	$	1,074	$	505
Real assets	2 to 13 Years	2,136		526		2,166		681
Distressed	2 to 8 Years	1,160		810		1,048		755
Private credit	3 to 8 Years	319		309		215		429
Traditional	2 to 14 Years	8,222		4,280		7,424		5,025
Vintage	1 to 3 Years	78		—		55		—
Investment funds	Not Applicable	228		—		373		—
		$	13,362	$	6,309	$	12,355	$	7,395

Schedule Of Components Of Restricted Assets

The following table presents the components of restricted assets:


	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Trust funds	$	8,462	$	8,120
Deposits with U.S. regulatory authorities	2,290		2,345
Deposits with non-U.S. regulatory authorities	3,366		2,959
Assets pledged under repurchase agreements	2,753		1,527
Other pledged assets	826		885
Total	$	17,697	$	15,836

Consolidated Variable Interest Entities

The following table presents the balances related to these sponsored investment products accounted for as VIEs that were recorded on our Consolidated balance sheets, including our net interest in these sponsored investment products:


	September 30
(in millions of U.S. dollars)	2023
Short-term investments	$	466

Equity securities	986
Private equities	21
Other investments	3,937
Total investments of consolidated VIEs	5,410
Cash	164
Other assets	22
Total assets of consolidated VIEs	$	5,596
Other liabilities	32
Repurchase agreements	837
Total liabilities of consolidated VIEs	869
Noncontrolling interests	3,176
Chubb's net interest in consolidated VIEs	$	1,551

Fair value measurements (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Financial Instruments Measured At Fair Value On A Recurring Basis

Financial instruments measured at fair value on a recurring basis, by valuation hierarchy


September 30, 2023	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	3,084	$	597	$	—	$	3,681
Non-U.S.	—		32,084		633		32,717
Corporate and asset-backed securities	—		38,286		2,569		40,855
Mortgage-backed securities	—		19,580		25		19,605
Municipal	—		2,908		—		2,908
	3,084		93,455		3,227		99,766

Equity securities	3,310		—		85		3,395
Short-term investments	2,546		2,906		2		5,454
Other investments (1)	569		4,364		—		4,933
Securities lending collateral	—		1,469		—		1,469
Investment derivatives	42		—		—		42
Derivatives designated as hedging instruments	—		48		—		48
Other derivative instruments	53		—		—		53
Separate account assets	5,217		89		—		5,306
Total assets measured at fair value (1)(2)	$	14,821	$	102,331	$	3,314	$	120,466
Liabilities:
Investment derivatives	$	168	$	—	$	—	$	168
Derivatives designated as hedging instruments	—		68		—		68
Other derivative instruments	—		4		—		4
Market risk benefits (3)	—		—		770		770
Total liabilities measured at fair value	$	168	$	72	$	770	$	1,010

(1)Excluded from the table above are policy loans of $603 million, and other investments of $47 million at September 30, 2023, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $13,362 million at September 30, 2023, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.


December 31, 2022	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	2,100	$	526	$	—	$	2,626
Non-U.S.	—		25,344		564		25,908
Corporate and asset-backed securities	—		34,506		2,449		36,955
Mortgage-backed securities	—		15,840		11		15,851
Municipal	—		3,880		—		3,880
	2,100		80,096		3,024		85,220
Equity securities	737		—		90		827
Short-term investments	3,108		1,849		3		4,960
Other investments (1)	552		399		—		951
Securities lending collateral	—		1,523		—		1,523
Investment derivative instruments	82		—		—		82
Derivatives designated as hedging instruments	—		17		—		17
Other derivative instruments	33		—		—		33
Separate account assets	5,101		89		—		5,190
Total assets measured at fair value (1)(2)	$	11,713	$	83,973	$	3,117	$	98,803
Liabilities:
Investment derivatives	$	139	$	—	$	—	$	139
Derivatives designated as hedging instruments	—		53		—		53
Market risk benefits (3)	—		—		800		800

Total liabilities measured at fair value	$	139	$	53	$	800	$	992

(1)Excluded from the table above are policy loans of $343 million and other investments of $47 million at December 31, 2022, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $12,355 million at December 31, 2022, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The following tables present a reconciliation of the beginning and ending balances of financial instruments measured at fair value using significant unobservable inputs (Level 3). Excluded from the following tables is the reconciliation of Market risk benefits, refer to Note 11 for additional information:



Three Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities	Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities

Balance, beginning of period	$	649	$	2,524	$	10		$	86	$	3
Transfers into Level 3	—		—		—			—		—
Transfers out of Level 3	(22)		(10)		—			—		—
Change in Net Unrealized Gains/Losses in OCI	(6)		6		—			—		—
Net Realized Gains/Losses	(2)		(4)		—			—		—
Purchases	46		158		16			4		—
Sales	(17)		(40)		—			(5)		(1)
Settlements	(15)		(65)		(1)			—		—

Balance, end of period	$	633	$	2,569	$	25		$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(4)	$	—		$	—	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(8)	$	4	$	—		$	—	$	—



Three Months Ended September 30, 2022 (in millions of U.S. dollars)		Available-for-Sale Debt Securities								Equity securities		Short-term investments
	Non-U.S.			Corporate and asset- backed securities			Mortgage-backed securities

Balance, beginning of period		$	549		$	2,261		$	19	$	81	$	9
Transfers into Level 3		—			2			—		—		—
Transfers out of Level 3		—			(4)			—		—		—
Change in Net Unrealized Gains/Losses in OCI		(34)			(16)			—		—		—

Net Realized Gains/Losses		(4)			(9)			—		3		(1)

Purchases		39			164			4		3		1
Sales		(19)			(8)			—		(4)		—
Settlements		(25)			(94)			(4)		—		(6)

Balance, end of period		$	506		$	2,296		$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date		$	(1)		$	(3)		$	—	$	3	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date		$	(35)		$	(19)		$	—	$	—	$	—



Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities	Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities

Balance, beginning of period	$	564	$	2,449	$	11		$	90	$	3
Transfers into Level 3	21		3		—			—		—
Transfers out of Level 3	(22)		(23)		—			—		—
Change in Net Unrealized Gains/Losses in OCI	5		8		—			—		(1)
Net Realized Gains/Losses	(3)		(7)		—			(6)		—
Purchases	151		481		16			15		3
Sales	(52)		(70)		—			(14)		(3)
Settlements	(31)		(272)		(2)			—		—

Balance, end of period	$	633	$	2,569	$	25		$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(6)	$	—		$	(6)	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	1	$	2	$	—		$	—	$	—



Nine Months Ended September 30, 2022 (in millions of U.S. dollars)		Available-for-Sale Debt Securities								Equity securities		Short-term investments
	Non-U.S.			Corporate and asset- backed securities			Mortgage-backed securities

Balance, beginning of period		$	633		$	2,049		$	26	$	77	$	7
Transfers into Level 3		23			41			—		1		—
Transfers out of Level 3		(23)			(97)			(5)		—		—
Change in Net Unrealized Gains/Losses in OCI		(88)			(68)			—		—		—
Net Realized Gains/Losses		(6)			(9)			—		7		(1)

Purchases		108			658			4		6		8
Sales		(44)			(59)			—		(8)		—
Settlements		(97)			(219)			(6)		—		(11)

Balance, end of period		$	506		$	2,296		$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date		$	(3)		$	(4)		$	—	$	6	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date		$	(89)		$	(71)		$	—	$	—	$	—

Carrying Values And Fair Values Of Financial Instruments Not Measured At Fair Value

The following tables present fair value, by valuation hierarchy, and carrying value of the financial instruments not measured at fair value:


September 30, 2023	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Private debt held-for-investment	$	—	$	—	$	2,389	$	2,389	$	2,401
Total assets	$	—	$	—	$	2,389	$	2,389	$	2,401
Liabilities:
Repurchase agreements	$	—	$	2,617	$	—	$	2,617	$	2,617
Short-term debt	—		688		—		688		700
Long-term debt	—		11,627		—		11,627		13,736
Trust preferred securities	—		362		—		362		308
Total liabilities	$	—	$	15,294	$	—	$	15,294	$	17,361

Private debt held-for-investment is related to Huatai and its consolidation. The fair value of Private debt held-for-investment is derived using a discounted cash flow approach, which includes an evaluation of forecasted contractual cash flows and yield curve information, among other loan characteristics and assumptions. These assumptions are derived from internal and third party sources. Since the valuation is derived from model-based techniques, Private debt held-for-investment is classified within Level 3 of the valuation hierarchy.


December 31, 2022	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities held to maturity
U.S. Treasury / Agency	$	1,299	$	71	$	—	$	1,370	$	1,417
Non-U.S.	—		1,054		—		1,054		1,136
Corporate and asset-backed securities	—		1,580		—		1,580		1,705
Mortgage-backed securities	—		1,351		—		1,351		1,455
Municipal	—		3,084		—		3,084		3,135
Total assets	$	1,299	$	7,140	$	—	$	8,439	$	8,848
Liabilities:
Repurchase agreements	$	—	$	1,419	$	—	$	1,419	$	1,419
Short-term debt	—		473		—		473		475
Long-term debt	—		12,495		—		12,495		14,402
Trust preferred securities	—		383		—		383		308
Total liabilities	$	—	$	14,770	$	—	$	14,770	$	16,604

Reinsurance (Tables)

9 Months Ended

Sep. 30, 2023

Reinsurance Disclosures [Abstract]

schedule of reinsurance recoverable on ceded insurance


	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Reinsurance Recoverable (1)		Valuation allowance		Net Reinsurance Recoverable (1)		Valuation allowance
Reinsurance recoverable on unpaid losses and loss expenses	$	17,808	$	318	$	17,086	$	289
Reinsurance recoverable on paid losses and loss expenses	1,942		52		1,773		62
Reinsurance recoverable on losses and loss expenses	$	19,750	$	370	$	18,859	$	351
Reinsurance recoverable on policy benefits	$	315	$	1	$	302	$	4

(1)Net of valuation allowance for uncollectible reinsurance.

Reinsurance Recoverable, Allowance for Credit Loss [Table Text Block]

The following table presents a roll-forward of valuation allowance for uncollectible reinsurance related to Reinsurance recoverable on loss and loss expenses:


	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Valuation allowance for uncollectible reinsurance - beginning of period	$	351	$	329
Provision for uncollectible reinsurance	27		30
Write-offs charged against the valuation allowance	(8)		(4)
Foreign exchange revaluation	—		(3)

Valuation allowance for uncollectible reinsurance - end of period	$	370	$	352

Deferred acquisition costs (Tables)

9 Months Ended

Sep. 30, 2023

Deferred Policy Acquisition Costs Disclosures [Abstract]

Deferred Policy Acquisition Costs

The following tables present a roll-forward of deferred acquisitions costs on long-duration contracts included in the Life Insurance segment:


	Nine Months Ended September 30, 2023

(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	320	$	776	$	395	$	902	$	121	$	2,514

Capitalizations	118		85		102		392		25		722
Amortization expense	(74)		(57)		(16)		(100)		(15)		(262)

Other (including foreign exchange)	8		(20)		7		(13)		(4)		(22)
Balance - end of period	$	372	$	784	$	488	$	1,181	$	127	$	2,952
Overseas General Insurance segment excluded from table											621
Total deferred acquisition costs on long-duration contracts											$	3,573


	Nine Months Ended September 30, 2022

(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	246	$	771	$	334	$	745	$	108	$	2,204

Capitalizations	111		95		46		166		39		457
Amortization expense	(56)		(55)		(14)		(72)		(16)		(213)

Other (including foreign exchange)	(2)		(50)		(16)		(20)		(14)		(102)
Balance - end of period	$	299	$	761	$	350	$	819	$	117	$	2,346
Overseas General Insurance segment excluded from table											633
Total deferred acquisition costs on long-duration contracts											$	2,979

Goodwill and Value of business acquired (Tables)

9 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill roll-forward by business segment

The following table presents a roll-forward of Goodwill by segment:


(in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Chubb Consolidated
Balance at December 31, 2022	$	6,945	$	2,230	$	134	$	4,605	$	371	$	1,943	$	16,228

Consolidation of Huatai Group (1)	—		—		—		562		—		2,832		3,394
Foreign exchange revaluation and other	—		—		—		44		—		(112)		(68)
Balance at September 30, 2023	$	6,945	$	2,230	$	134	$	5,211	$	371	$	4,663	$	19,554

(1)Includes $1.0 billion attributable to noncontrolling interests.

Schedule of Changes in VOBA

The following table presents a roll-forward of VOBA:


	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023
Balance, beginning of period	$	3,702

Consolidation of Huatai Group	309
Amortization of VOBA (1)	(235)
Foreign exchange revaluation and other	(101)
Balance, end of period	$	3,675

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

Schedule of Expected Amortization of VOBA

The following table presents, as of September 30, 2023, the expected estimated pre-tax amortization expense related to VOBA at current foreign currency rates, for the fourth quarter of 2023 and for the next five years:




For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of VOBA


Fourth quarter of 2023	$	67
2024	270
2025	230
2026	202
2027	181
2028	165
Total	$	1,115

Schedule of Intangible Assets and Goodwill

Other intangible assets that are subject to amortization principally relate to agency distribution relationships, renewal rights, and patents. Other intangible assets that are not subject to amortization principally relate to trademarks. For other intangible assets related to the consolidation of Huatai, refer to Note 2.


(in millions of U.S. dollars)	September 30 2023		December 31 2022
Subject to amortization	$	3,350	$	2,459
Not subject to amortization	3,494		2,982
Total	$	6,844	$	5,441

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table presents, as of September 30, 2023, the expected pre-tax amortization expense of purchased intangibles, at current foreign currency exchange rates, for the fourth quarter of 2023 and for the next five years:



For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of purchased intangibles		Amortization of Huatai UPR intangible asset (1)		Amortization of Huatai land use rights (2)		Total amortization
Fourth quarter of 2023	$	84	$	16	$	3	$	103
2024	312		30		12		354
2025	286		16		12		314
2026	269		7		12		288
2027	249		3		13		265
2028	240		—		13		253
Total	$	1,440	$	72	$	65	$	1,577

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

(2)Recognized in Other (income) expense in the Consolidated statements of operations.

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1A

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-2

Liability for Claims and Claims Adjustment Expense [Abstract]

Unpaid losses and loss expenses (Tables)

9 Months Ended

Sep. 30, 2023

Schedule of Unpaid Losses And Loss Expenses Roll Forward [Table Text Block]

The following table presents a reconciliation of beginning and ending Unpaid losses and loss expenses:


	Nine Months Ended
	September 30
	2023		2022
(in millions of U.S. dollars)			As Adjusted
Gross unpaid losses and loss expenses – beginning of period	$	75,747	$	72,330
Reinsurance recoverable on unpaid losses – beginning of period (1)	(17,086)		(16,132)
Net unpaid losses and loss expenses – beginning of period	58,661		56,198
Net losses and loss expenses incurred in respect of losses occurring in:
Current year	18,604		17,755
Prior years (2)	(667)		(922)
Total	17,937		16,833
Net losses and loss expenses paid in respect of losses occurring in:
Current year	4,853		4,511
Prior years	10,158		9,217
Total	15,011		13,728
Consolidation of Huatai Group	405		—
Foreign currency revaluation and other	(95)		(1,280)
Net unpaid losses and loss expenses – end of period	61,897		58,023
Reinsurance recoverable on unpaid losses (1)	17,808		17,313
Gross unpaid losses and loss expenses – end of period	$	79,705	$	75,336

(1) Net of valuation allowance for uncollectible reinsurance.

(2) Relates to prior period loss reserve development only and excludes prior period development related to reinstatement premiums, expense adjustments, earned premiums, and development on international A&H lines totaling $71 million and $213 million for the nine months ended September 30, 2023 and 2022, respectively.

Prior Period Development, by Segment [Table Text Block]

The following table summarizes (favorable) and adverse PPD by segment:


	Three Months Ended September 30						Nine Months Ended September 30
(in millions of U.S. dollars)	Long-tail		Short-tail		Total		Long-tail		Short-tail		Total
2023
North America Commercial P&C Insurance	$	107	$	(191)	$	(84)	$	(23)	$	(279)	$	(302)
North America Personal P&C Insurance	—		(119)		(119)		—		(135)		(135)
North America Agricultural Insurance	—		(9)		(9)		—		(12)		(12)
Overseas General Insurance	(52)		3		(49)		(52)		(201)		(253)
Global Reinsurance	—		—		—		7		(32)		(25)
Corporate	61		—		61		131		—		131
Total	$	116	$	(316)	$	(200)	$	63	$	(659)	$	(596)
2022
North America Commercial P&C Insurance	$	(29)	$	(137)	$	(166)	$	(315)	$	(246)	$	(561)
North America Personal P&C Insurance	—		(133)		(133)		—		(187)		(187)
North America Agricultural Insurance	—		9		9		—		(17)		(17)
Overseas General Insurance	(5)		—		(5)		(5)		(233)		(238)
Global Reinsurance	—		—		—		(7)		29		22
Corporate	73		—		73		272		—		272
Total	$	39	$	(261)	$	(222)	$	(55)	$	(654)	$	(709)

Future policy benefits (Tables)

9 Months Ended

Sep. 30, 2023

Liability for Future Policy Benefits Activity [Abstract]

Liability for Future Policy Benefit, Activity

The following tables present a roll-forward of the liability for future policy benefits included in the Life Insurance segment:


Present Value of Expected Net Premiums	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	818	$	2,301	$	9,863	$	42	$	13,024
Beginning balance at original discount rate	879		2,354		10,409		43		13,685
Effect of changes in cash flow assumptions	35		40		(811)		2		(734)
Effect of actual variances from expected experience	(13)		6		(120)		—		(127)
Adjusted beginning of period balance	901		2,400		9,478		45		12,824
Consolidation of Huatai Group	3		1,690		145		12		1,850
Issuances	90		274		1,066		5		1,435
Interest accrual	45		62		421		1		529
Net premiums collected (1)	(127)		(375)		(998)		(15)		(1,515)

Other (including foreign exchange)	(9)		(56)		(212)		18		(259)
Ending balance at original discount rate	903		3,995		9,900		66		14,864
Effect of changes in discount rate assumptions	(69)		(62)		(497)		(1)		(629)
Balance – end of period	$	834	$	3,933	$	9,403	$	65	$	14,235

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.


Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	1,427	$	6,048	$	14,206	$	239	$	21,920
Beginning balance at original discount rate	1,555		6,225		15,022		250		23,052
Effect of changes in cash flow assumptions	31		44		(848)		3		(770)
Effect of actual variances from expected experience	(10)		12		(114)		—		(112)
Adjusted beginning of period balance	1,576		6,281		14,060		253		22,170
Consolidation of Huatai Group	17		3,659		163		298		4,137
Issuances	90		276		1,065		5		1,436
Interest accrual	54		176		514		6		750
Benefits payments	(119)		(212)		(1,065)		(8)		(1,404)

Other (including foreign exchange)	92		22		(628)		178		(336)
Ending balance at original discount rate	1,710		10,202		14,109		732		26,753
Effect of changes in discount rate assumptions	(152)		(274)		(790)		(11)		(1,227)
Balance – end of period	$	1,558	$	9,928	$	13,319	$	721	$	25,526


	September 30, 2023
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	724	$	5,995	$	3,916	$	656	$	718	$	12,009
Deferred profit liability	223		707		156		14		—		1,100
Net liability for future policy benefits, per consolidated balance sheet	947		6,702		4,072		670		718		13,109
Less: Reinsurance recoverable on future policy benefits	111		47		103		21		33		315
Net liability for future policy benefits, after reinsurance recoverable	$	836	$	6,655	$	3,969	$	649	$	685	$	12,794
Weighted-average duration (years)	10.2		26.5		10.3		15.1		4.9		18.7


Present Value of Expected Net Premiums	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	422	$	1,341	$	2,520	$	30	$	4,313
Beginning balance at original discount rate	397		1,243		2,323		28		3,991
Effect of changes in cash flow assumptions	—		(3)		(29)		—		(32)
Effect of actuarial variances from expected experience	(31)		12		(120)		—		(139)
Adjusted beginning of period balance	366		1,252		2,174		28		3,820
Acquisition of Cigna	445		1,078		8,191		23		9,737
Issuances	95		155		348		3		601
Interest accrual	45		37		184		1		267
Net premiums collected (1)	(93)		(156)		(445)		(9)		(703)


Other (including foreign exchange)	(46)		(102)		(487)		(4)		(639)
Ending balance at original discount rate	812		2,264		9,965		42		13,083
Effect of changes in discount rate assumptions	(59)		(95)		(531)		(1)		(686)
Balance – end of period	$	753	$	2,169	$	9,434	$	41	$	12,397

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.


Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	921	$	4,785	$	4,939	$	130	$	10,775
Beginning balance at original discount rate	858		3,833		4,589		122		9,402
Effect of changes in cash flow assumptions	(5)		(3)		(41)		11		(38)
Effect of actuarial variances from expected experience	(32)		14		(126)		—		(144)
Adjusted beginning of period balance	821		3,844		4,422		133		9,220
Acquisition of Cigna	668		2,267		10,542		106		13,583
Issuances	100		155		348		3		606
Interest accrual	52		123		242		3		420
Benefits payments	(82)		(151)		(469)		(2)		(704)


Other (including foreign exchange)	(112)		(207)		(651)		(102)		(1,072)
Ending balance at original discount rate	1,447		6,031		14,434		141		22,053
Effect of changes in discount rate assumptions	(126)		(308)		(790)		(16)		(1,240)
Balance – end of period	$	1,321	$	5,723	$	13,644	$	125	$	20,813


	September 30, 2022
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	568	$	3,554	$	4,210	$	84	$	735	$	9,151
Deferred profit liability	172		450		125		8		—		755
Net liability for future policy benefits, per consolidated balance sheet	740		4,004		4,335		92		735		9,906
Less: Reinsurance recoverable on future policy benefits	111		56		107		—		38		312
Net liability for future policy benefits, after reinsurance recoverable	$	629	$	3,948	$	4,228	$	92	$	697	$	9,594
Weighted-average duration (years)	9.0		24.7		11.0		13.5		5.1		16.2

Undiscounted expected gross premiums and expected future policy benefit payments

The following table presents the amount of undiscounted expected gross premiums and expected future policy benefit payments included in the Life Insurance segment:


	September 30		September 30
(in millions of U.S. dollars)	2023		2022

Term Life
Undiscounted expected future benefit payments	$	2,492	$	2,189
Undiscounted expected future gross premiums	$	2,884	$	2,503
Discounted expected future benefit payments	$	1,558	$	1,321
Discounted expected future gross premiums	$	1,910	$	1,682
Whole Life
Undiscounted expected future benefit payments	$	23,457	$	15,631
Undiscounted expected future gross premiums	$	9,478	$	6,654
Discounted expected future benefit payments	$	9,928	$	5,723
Discounted expected future gross premiums	$	7,654	$	5,173
A&H
Undiscounted expected future benefit payments	$	23,168	$	23,873
Undiscounted expected future gross premiums	$	34,055	$	34,659
Discounted expected future benefit payments	$	13,319	$	13,644
Discounted expected future gross premiums	$	20,604	$	20,193
Other
Undiscounted expected future benefit payments	$	977	$	265
Undiscounted expected future gross premiums	$	103	$	102
Discounted expected future benefit payments	$	721	$	125
Discounted expected future gross premiums	$	92	$	92

Gross premiums and interest accretion recognized in statement of operations

The following table presents the amount of revenue and interest recognized in the statement of operations:


	Gross Premiums or Assessments				Interest Accretion
	Nine Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Life Insurance
Term Life	$	511	$	361	$	9	$	7

Whole Life	858		411		114		86
A&H	2,171		1,226		93		58
Other	54		71		5		2
Overseas General Insurance
A&H	1,175		1,075		—		—
Total	$	4,769	$	3,144	$	221	$	153

Weighted-average interests

The following table presents the weighted-average interest rates:


	Interest Accretion Rate				Current Discount Rate

	September 30				September 30
	2023		2022		2023		2022
Life Insurance
Term Life	2.9	%	2.6	%	6.0	%	6.1	%

Whole Life	3.2	%	3.9	%	4.7	%	5.5	%
A&H	3.7	%	3.6	%	6.7	%	6.1	%
Other	2.6	%	3.7	%	4.3	%	6.2	%

Policyholders' account balances (Tables)

9 Months Ended

Sep. 30, 2023

Policyholder Account Balance [Abstract]

Policyholder Account Balances

The following tables present a roll-forward of policyholders' account balances:


	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,719	$	1,421	$	3,140
Consolidation of Huatai Group	602		3,412		4,014

Premiums received	275		228		503
Policy charges (1)	(135)		(8)		(143)
Surrenders and withdrawals	(69)		(113)		(182)
Benefit payments	(6)		(81)		(87)

Interest credited	39		43		82
Other (including foreign exchange)	(42)		(107)		(149)
Balance, end of period	$	2,383	$	4,795	$	7,178


	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,612	$	1,154	$	2,766

Acquisition of Cigna	10		345		355
Premiums received	292		55		347
Policy charges (1)	(141)		(8)		(149)
Surrenders and withdrawals	(55)		(39)		(94)
Benefit payments	(3)		(15)		(18)

Interest credited	30		25		55
Other (including foreign exchange)	(69)		(185)		(254)
Balance, end of period	$	1,676	$	1,332	$	3,008

(1)Contracts included in the policyholder account balances are generally charged a premium and/or monthly assessments on the basis of the account balance.



	September 30
	2023						2022
(in millions of U.S. dollars, except for percentages)	Universal Life			Other			Universal Life			Other
Weighted-average crediting rate	3.8		%	2.1		%	3.7		%	2.6		%
Net amount at risk (1)	$	10,493		$	1,675		$	10,116		$	1,503
Cash Surrender Value	$	1,596		$	3,655		$	934		$	1,280

(1)For those guarantees of benefits that are payable in the event of death, the net amount at risk is defined as the current guaranteed minimum death benefit in excess of the current account balance at the balance sheet date.

Policyholder Account Balance, Guaranteed Minimum Crediting Rates

Universal Life


	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	56	$	563	$	622
2.01% – 4.00%	472		377		558		333		1,740
Greater than 4.00%	21		—		—		—		21
Total	$	496	$	377	$	614	$	896	$	2,383


	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	59	$	505	$	567
2.01% – 4.00%	456		394		228		—		1,078
Greater than 4.00%	31		—		—		—		31
Total	$	490	$	394	$	287	$	505	$	1,676

Other policyholders' account balances


	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	1,328	$	—	$	1,719	$	799	$	3,846
2.01% – 4.00%	112		487		27		—		626
Greater than 4.00%	323		—		—		—		323
Total	$	1,763	$	487	$	1,746	$	799	$	4,795


	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	411	$	—	$	191	$	424	$	1,026
2.01% – 4.00%	—		—		—		—		—
Greater than 4.00%	306		—		—		—		306
Total	$	717	$	—	$	191	$	424	$	1,332

Market risk benefits (Tables)

9 Months Ended

Sep. 30, 2023

Market Risk Benefit [Abstract]

Market Risk Benefit, Activity

The following table presents a roll-forward of MRB:


	Nine Months Ended September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	800	$	812
Balance, beginning of period, before effect of changes in the instrument-specific credit risk	776		755



Interest rate changes	(117)		(561)
Effect of changes in equity markets	(69)		633
Effect of changes in volatilities	51		14

Effect of changes in future expected policyholder behavior	89		40

Effect of timing and all other	19		(29)
Balance, end of period, before effect of changes in the instrument-specific credit risk	$	749	$	852
Effect of changes in the instrument-specific credit risk	21		9
Balance – end of period	$	770	$	861
Weighted-average age of policyholders (years)	73		73
Net amount at risk	$	2,138	$	2,885

Schedule Of Significant Unobservable Inputs Used In Level 3 Liability Valuations

For MRB, Chubb estimates fair value using an internal valuation model which includes a number of factors including interest rates, equity markets, credit risk, current account value, market volatility, expected annuitization rates and other policyholder behavior, and changes in policyholder mortality. All reinsurance treaties contain claim limits, which are also factored into the valuation model.

Valuation Technique

Significant Unobservable Inputs

September 30, 2023

September 30, 2022

Ranges

Weighted Average(1)

Ranges

Weighted Average(1)

MRB (1)

Actuarial model

Lapse rate

0.5% – 30%

4.0

%

0.5% – 30.4%

3.8

%

Annuitization rate

0% – 100%

4.8

%

0% – 100%

4.6

%

(1)The weighted-average lapse and annuitization rates are determined by weighting each treaty's rates by the MRB contract's fair value.

Separate accounts (Tables)

9 Months Ended

Sep. 30, 2023

Separate Accounts Disclosure [Abstract]

Fair Value, Separate Account Investment

The following table presents the aggregate fair value of Separate account assets, by major security type:


	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Cash and cash equivalents	$	88	$	141

Mutual funds	5,129		4,960

Fixed maturities	89		89

Total	$	5,306	$	5,190

Separate Account, Liability

The following table presents a roll-forward of separate account liabilities:


	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	5,190	$	5,560
Acquisition of Cigna	—		301
Premiums and deposits	724		1,147
Policy charges	(103)		(93)
Surrenders and withdrawals	(407)		(304)
Benefit payments	(291)		(289)
Investment performance	382		(978)

Other (including foreign exchange)	(189)		(453)
Balance – end of period	$	5,306	$	4,891
Cash surrender value (1)	$	5,285	$	4,771

(1) Cash surrender value represents the amount of the contract holder's account balances distributable at the balance sheet date less certain surrender charges.

Commitments, contingencies, and guarantees (Tables)

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Balance Sheet Locations, Fair Values In An Asset Or (Liability) Position, And Notional Values/Payment Provisions Of Derivative Instruments

The following table presents the balance sheet location, fair value of derivative instruments in an asset or (liability) position, and notional value/payment provision of our derivative instruments:


				September 30, 2023								December 31, 2022
	Consolidated Balance Sheet Location	Fair Value				Notional Value/ Payment Provision			Fair Value					Notional Value/ Payment Provision
(in millions of U.S. dollars)		Derivative Asset		Derivative (Liability)				Derivative Asset			Derivative (Liability)
Investment and embedded derivatives not designated as hedging instruments:
Foreign currency forward contracts	OA / (AP)	$	15	$	(147)	$	3,711		$	64		$	(115)	$	4,134
Options/Futures contracts on notes and bonds	OA / (AP)	27		(21)		2,150			18			(24)		1,511
Convertible securities (1)	FM AFS / ES	53		—		61			30			—		37
		$	95	$	(168)	$	5,922		$	112		$	(139)	$	5,682
Other derivative instruments:
Futures contracts on equities (2)	OA / (AP)	$	48	$	—	$	1,119		$	33		$	—	$	939
Other	OA / (AP)	5		(4)		368			—			—		—
		$	53	$	(4)	$	1,487		$	33		$	—	$	939
Derivatives designated as hedging instruments:
Cross-currency swaps - fair value hedges	OA / (AP)	$	48	$	—	$	1,609		$	17		$	—	$	1,595
Cross-currency swaps - net investment hedges	OA / (AP)	—		(68)		1,594			—			(53)		1,604
		$	48	$	(68)	$	3,203		$	17		$	(53)	$	3,199

(1)Includes fair value of embedded derivatives.

(2)Related to MRB book of business.

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for fair value hedges:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(17)	$	(94)	$	23	$	(94)
Net realized gain/(loss) reclassified from OCI	(51)		(32)		(20)		(32)
Interest expense reclassified from OCI	(4)		—		(12)		—
OCI gain/(loss) after reclassifications	$	38	$	(62)	$	55	$	(62)

Schedule of Net Investment Hedges, Statements of Financial Performance and Financial Position, Location

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for net investment hedges:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(20)	$	64	$	(8)	$	64
Interest income reclassified from OCI	3		—		10		—
OCI gain/(loss) after reclassifications	$	(23)	$	64	$	(18)	$	64

Net Realized Gains (Losses) Of Derivative Instrument Activity In Consolidated Statement Of Operations

The following table presents net realized gains (losses) related to derivative instrument activity in the Consolidated statements of operations:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Investment and embedded derivative instruments:
Foreign currency forward contracts	$	(17)	$	(247)	$	(95)	$	(515)

All other futures contracts, options, and equities	29		49		5		285
Convertible securities (1)	(3)		—		(2)		(2)

Total investment and embedded derivative instruments	$	9	$	(198)	$	(92)	$	(232)
Other derivative instruments:
Futures contracts on equities (2)	$	52	$	54	$	(80)	$	240
Other	(7)		(19)		(6)		(9)
Total other derivative instruments	$	45	$	35	$	(86)	$	231
	$	54	$	(163)	$	(178)	$	(1)

(1)Includes embedded derivatives.

(2)Related to MRB book of business.

Transfer of Certain Financial Assets Accounted for as Secured Borrowings

The following table presents the carrying value of collateral held under securities lending agreements by investment category and remaining contractual maturity of the underlying agreements:


	Remaining contractual maturity

	September 30, 2023		December 31, 2022
(in millions of U.S. dollars)	Overnight and Continuous
Collateral held under securities lending agreements:
Cash	$	762	$	820
U.S. Treasury / Agency	81		72
Non-U.S.	555		604
Corporate and asset-backed securities	47		27

Municipal	6		—
Equity securities	18		—

	$	1,469	$	1,523
Gross amount of recognized liability for securities lending payable	$	1,469	$	1,523

The following table presents the carrying value of collateral pledged under repurchase agreements by investment category and remaining contractual maturity of the underlying agreements:


	Remaining contractual maturity
	September 30, 2023								December 31, 2022
	Up to 30 Days		30-90 Days		Greater than 90 Days		Total		Up to 30 Days		30-90 Days		Total
(in millions of U.S. dollars)
Collateral pledged under repurchase agreements:
Cash	$	—	$	—	$	46	$	46	$	12	$	—	$	12
Non-U.S.	1,138		—		—		$	1,138	—		—		$	—
U.S. Treasury / Agency	—		103		—		103		—		101		101


Mortgage-backed securities	50		507		909		1,466		921		493		1,414
	$	1,188	$	610	$	955	$	2,753	$	933	$	594	$	1,527
Gross amount of recognized liabilities for repurchase agreements							$	2,617					$	1,419
Difference (1)							$	136					$	108

(1)Per the repurchase agreements, the amount of collateral posted is required to exceed the amount of gross liability.

Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2023

Stockholders' Equity Note [Abstract]

Dividends Declared

The following table presents dividend distributions per Common Share in Swiss francs (CHF) and U.S. dollars (USD):


	Three Months Ended						Nine Months Ended
	September 30						September 30
	2023			2022			2023			2022
	CHF	USD		CHF	USD		CHF	USD		CHF	USD
Total dividend distributions per common share	0.75	$	0.86	0.78	$	0.83	2.29	$	2.55	2.32	$	2.46

Share Repurchase Program [Table Text Block]

The following table presents repurchases of Chubb's Common Shares conducted in a series of open market transactions under the Board authorizations:


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars, except share data)	2023		2022		2023		2022
Number of shares repurchased	2,949,900		3,676,528		8,634,600		14,022,728
Cost of shares repurchased	$	606	$	685	$	1,758	$	2,815
Repurchase authorization remaining at end of period	$	4,398	$	1,816	$	4,398	$	1,816

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table presents changes in accumulated other comprehensive income (loss):


	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI)
Net unrealized appreciation (depreciation) on investments
Balance – beginning of period, net of tax	$	(6,809)	$	(5,713)	$	(7,279)	$	2,256
Change in period, before reclassification from AOCI (before tax)	(2,240)		(3,324)		(1,935)		(12,898)
Amounts reclassified from AOCI (before tax)	70		279		357		857
Change in period, before tax	(2,170)		(3,045)		(1,578)		(12,041)
Income tax (expense) benefit	29		147		(93)		1,174
Total other comprehensive loss	(2,141)		(2,898)		(1,671)		(10,867)
Noncontrolling interests, net of tax	3		—		3		—
Balance – end of period, net of tax	(8,953)		(8,611)		(8,953)		(8,611)
Current discount rate on liability for future policy benefits
Balance – beginning of period, net of tax	(247)		(427)		(75)		(1,399)
Change in period, before tax	683		479		497		1,546
Income tax expense	(35)		(57)		(21)		(152)
Total other comprehensive income	648		422		476		1,394
Noncontrolling interests, net of tax	(3)		—		(3)		—
Balance – end of period, net of tax	404		(5)		404		(5)


	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI) - continued
Instrument-specific credit risk on market risk benefits
Balance – beginning of period, net of tax	(16)		(17)		(24)		(57)
Change in period, before and net of tax	(5)		8		3		48
Total other comprehensive income (loss)	(5)		8		3		48
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(21)		(9)		(21)		(9)
Cumulative foreign currency translation adjustment
Balance – beginning of period, net of tax	(2,920)		(2,768)		(2,966)		(2,114)
Change in period, before reclassification from AOCI (before tax)	(314)		(942)		(269)		(1,631)
Amounts reclassified from AOCI (before tax)	(3)		—		(10)		—
Change in period, before tax	(317)		(942)		(279)		(1,631)
Income tax benefit	13		7		21		42
Total other comprehensive loss	(304)		(935)		(258)		(1,589)
Noncontrolling interests, net of tax	(76)		—		(76)		—
Balance – end of period, net of tax	(3,148)		(3,703)		(3,148)		(3,703)
Fair value hedging instruments
Balance – beginning of period, net of tax	(53)		—		(66)		—
Change in period, before reclassification from AOCI (before tax)	(17)		(94)		23		(94)
Amounts reclassified from AOCI (before tax)	55		32		32		32
Change in period, before tax	38		(62)		55		(62)
Income tax (expense) benefit	(7)		13		(11)		13
Total other comprehensive income (loss)	31		(49)		44		(49)
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(22)		(49)		(22)		(49)
Postretirement benefit liability adjustment
Balance – beginning of period, net of tax	223		259		225		240
Change in period, before tax	(1)		3		(3)		27
Income tax expense	—		(1)		—		(6)
Total other comprehensive income (loss)	(1)		2		(3)		21
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	222		261		222		261
Accumulated other comprehensive income (loss)	$	(11,518)	$	(12,116)	$	(11,518)	$	(12,116)

Reclassification out of Accumulated Other Comprehensive Income

The following table presents reclassifications from accumulated other comprehensive income (loss) to the Consolidated statements of operations:


	Three Months Ended				Nine Months Ended				Consolidated Statement of Operations Location
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities available for sale	$	(70)	$	(279)	$	(357)	$	(857)	Net realized gains (losses)
Income tax benefit	25		39		59		138		Income tax expense
	$	(45)	$	(240)	$	(298)	$	(719)	Net income
Cumulative foreign currency translation adjustment
Cross-currency swaps	$	3	$	—	$	10	$	—	Interest expense
Income tax expense	(1)		—		(2)		—		Income tax expense
	$	2	$	—	$	8	$	—	Net income
Net gains (losses) of fair value hedging instruments
Cross-currency swaps	$	(51)	$	(32)	$	(20)	$	(32)	Net realized gains (losses)
Cross-currency swaps	(4)		—		(12)		—		Interest expense
Income tax benefit	12		7		7		7		Income tax expense
	$	(43)	$	(25)	$	(25)	$	(25)	Net income
Total amounts reclassified from AOCI	$	(86)	$	(265)	$	(315)	$	(744)

Postretirement benefits (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The components of net pension and other postretirement benefit costs (benefits) reflected in Net income in the Consolidated statements of operations were as follows:


	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023		2022
Three Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	2	$	—	$	1	$	—	$	—
Non-service cost (benefit):
Interest cost	35		9		21		5		1		—
Expected return on plan assets	(56)		(13)		(70)		(11)		—		—
Amortization of net actuarial loss	—		—		—		—		(1)		—
Amortization of prior service cost	—		—		—		—		(1)		—

Settlements	3		—		—		—		—		—
Total non-service cost (benefit)	(18)		(4)		(49)		(6)		(1)		—
Net periodic benefit cost (benefit)	$	(18)	$	(2)	$	(49)	$	(5)	$	(1)	$	—


	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023			2022
Nine Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost:	$	—	$	6	$	—	$	3		$	—		$	—
Non-service cost (benefit):
Interest cost	103		27		64		17			2			1
Expected return on plan assets	(168)		(38)		(212)		(33)			(2)			(1)
Amortization of net actuarial loss	—		—		—		—			(1)			—
Amortization of prior service cost	—		—		—		—			(1)			—
Settlements	3		—		—		—			—			—
Total non-service cost (benefit)	(62)		(11)		(148)		(16)			(2)			—
Net periodic benefit cost (benefit)	$	(62)	$	(5)	$	(148)	$	(13)		$	(2)		$	—

The line items in which the service cost and non-service cost (benefit) components of net periodic cost (benefit) are included in the Consolidated statements of operations were as follows:


	Pension Benefit Plans				Other Postretirement Benefit Plans
Three Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	2		1		—		—
Total service cost	2		1		—		—
Non-service cost (benefit):
Losses and loss expenses	(1)		(5)		—		—
Administrative expenses	(21)		(50)		(1)		—
Total non-service cost (benefit)	(22)		(55)		(1)		—
Net periodic benefit cost (benefit)	$	(20)	$	(54)	$	(1)	$	—


	Pension Benefit Plans				Other Postretirement Benefit Plans
Nine Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	6		3		—		—
Total service cost	6		3		—		—
Non-service cost (benefit):
Losses and loss expenses	(6)		(15)		—		—
Administrative expenses	(67)		(149)		(2)		—
Total non-service cost (benefit)	(73)		(164)		(2)		—
Net periodic benefit cost (benefit)	$	(67)	$	(161)	$	(2)	$	—

Other Income and Expense (Tables)

9 Months Ended

Sep. 30, 2023

Other Income and Expenses [Abstract]

Schedule of Other Nonoperating Income (Expense)


	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Equity in net income (loss) of partially-owned entities	$	150	$	(111)	$	610	$	180
Gains (losses) from fair value changes in separate account assets (1)	(19)		(67)		(56)		(116)
Asset management and performance fee revenue	55		—		55		—
Asset management and performance fee expense	(33)		—		(33)		—
Federal excise and capital taxes	(6)		(6)		(17)		(15)
Other	7		(18)		(9)		(40)
Total	$	154	$	(202)	$	550	$	9

(1) Related to gains (losses) from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP.

Segment information (Tables)

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Operations By Segment

The following tables present the Statement of Operations by segment:


For the Three Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated



Net premiums written	$	5,132	$	1,527	$	1,521	$	3,211	$	261	$	1,452	$	—	$	—	$	13,104
Net premiums earned	4,735		1,407		1,540		3,311		239		1,442		—		—		12,674
Losses and loss expenses	3,025		900		1,356		1,635		116		20		61		(7)		7,106
Policy benefits	—		—		—		91		—		866		—		(19)		938
Policy acquisition costs	640		287		76		827		69		279		—		—		2,178
Administrative expenses	323		84		3		327		9		216		98		—		1,060
Underwriting income (loss)	747		136		105		431		45		61		(159)		26		1,392
Net investment income	780		94		12		248		47		211		14		(92)		1,314
Other (income) expense	6		2		—		(10)		—		(28)		(51)		(73)		(154)
Amortization expense of purchased intangibles	—		3		6		19		—		12		44		—		84
Segment income (loss)	$	1,521	$	225	$	111	$	670	$	92	$	288	$	(138)	$	7	$	2,776
Net realized gains (losses)													(96)		(7)		(103)
Market risk benefits gains (losses)													(32)		—		(32)
Interest expense													174		—		174
Cigna integration expenses													14		—		14
Income tax expense													413		—		413
Net income (loss)													(867)		—		2,040
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(864)	$	—	$	2,043


For the Three Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated



Net premiums written	$	4,722	$	1,392	$	1,723	$	2,645	$	265	$	1,265	$	—	$	—	$	12,012
Net premiums earned	4,283		1,334		1,673		2,741		255		1,244		—		—		11,530
Losses and loss expenses	3,036		857		1,444		1,333		311		27		74		(19)		7,063
Policy benefits	—		—		—		108		—		666		—		(67)		707
Policy acquisition costs	583		274		68		720		59		266		—		—		1,970
Administrative expenses	272		71		3		264		8		174		91		—		883
Underwriting income (loss)	392		132		158		316		(123)		111		(165)		86		907
Net investment income	589		76		9		151		71		147		5		(69)		979
Other (income) expense	6		1		1		(2)		—		4		194		(2)		202
Amortization expense of purchased intangibles	—		2		7		12		—		2		46		—		69
Segment income (loss)	$	975	$	205	$	159	$	457	$	(52)	$	252	$	(400)	$	19	$	1,615
Net realized gains (losses)													(437)		(19)		(456)
Market risk benefits gains (losses)													69		—		69
Interest expense													150		—		150
Cigna integration expenses													23		—		23
Income tax expense													263		—		263
Net income (loss)													$	(1,204)	$	—	$	792


For the Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated



Net premiums written	$	14,575	$	4,404	$	2,581	$	9,359	$	831	$	4,015	$	—	$	—	$	35,765
Net premiums earned	13,710		4,084		2,334		9,005		720		3,962		—		—		33,815
Losses and loss expenses	8,625		2,634		2,003		4,139		319		87		133		(3)		17,937
Policy benefits	—		—		—		338		—		2,283		—		(56)		2,565
Policy acquisition costs	1,867		836		128		2,286		196		829		—		—		6,142
Administrative expenses	934		247		9		899		27		553		290		—		2,959
Underwriting income (loss)	2,284		367		194		1,343		178		210		(423)		59		4,212
Net investment income	2,204		262		43		636		144		525		28		(276)		3,566
Other (income) expense	18		2		—		(29)		(1)		(69)		(251)		(220)		(550)
Amortization expense of purchased intangibles	—		8		19		52		—		18		129		—		226
Segment income (loss)	$	4,470	$	619	$	218	$	1,956	$	323	$	786	$	(273)	$	3	$	8,102
Net realized gains (losses)													(481)		(3)		(484)
Market risk benefits gains (losses)													(154)		—		(154)
Interest expense													499		—		499
Cigna integration expenses													51		—		51
Income tax expense													1,189		—		1,189
Net income (loss)													$	(2,647)	$	—	$	5,725
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(2,644)	$	—	$	5,728


For the Nine Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated



Net premiums written	$	13,426	$	3,998	$	2,523	$	8,364	$	780	$	2,403	$	—	$	—	$	31,494
Net premiums earned	12,645		3,852		2,217		8,065		712		2,325		—		—		29,816
Losses and loss expenses	7,979		2,343		1,830		3,772		565		78		275		(9)		16,833
Policy benefits	—		—		—		282		—		1,275		—		(116)		1,441
Policy acquisition costs	1,701		792		111		2,096		178		537		—		—		5,415
Administrative expenses	814		213		4		811		27		346		264		—		2,479
Underwriting income (loss)	2,151		504		272		1,104		(58)		89		(539)		125		3,648
Net investment income (loss)	1,600		199		23		460		232		359		(4)		(180)		2,689
Other (income) expense	12		3		1		3		1		(38)		73		(64)		(9)
Amortization expense of purchased intangibles	—		7		20		40		—		7		137		—		211
Segment income (loss)	$	3,739	$	693	$	274	$	1,521	$	173	$	479	$	(753)	$	9	$	6,135
Net realized gains (losses)													(927)		(9)		(936)
Market risk benefits gains (losses)													85		—		85
Interest expense													416		—		416
Cigna integration expenses													26		—		26
Income tax expense													907		—		907
Net income (loss)													$	(2,944)	$	—	$	3,935

Earnings per share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share, Basic And Diluted


	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars, except share and per share data)			As Adjusted				As Adjusted
Numerator:
Net income	$	2,040	$	792	$	5,725	$	3,935
Net loss attributable to noncontrolling interests	(3)		—		(3)		—
Net income attributable to Chubb	$	2,043	$	792	$	5,728	$	3,935
Denominator:
Denominator for basic earnings per share attributable to Chubb:
Weighted-average shares outstanding	409,505,454		416,542,101		412,076,470		421,290,032
Denominator for diluted earnings per share attributable to Chubb:
Share-based compensation plans	3,100,505		3,076,855		3,288,940		3,733,449
Weighted-average shares outstanding and assumed conversions	412,605,959		419,618,956		415,365,410		425,023,481
Basic earnings per share attributable to Chubb	$	4.99	$	1.90	$	13.90	$	9.34
Diluted earnings per share attributable to Chubb	$	4.95	$	1.89	$	13.79	$	9.26
Potential anti-dilutive share conversions	2,562,206		1,693,502		2,330,821		1,377,784

General and significant accounting policies (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jul. 01, 2023	Jun. 30, 2023	Dec. 31, 2022	Jan. 01, 2021
General and significant accounting policies [Line Items]
Retained earnings	$ 51,510			$ 48,305
Accumulated other comprehensive income (loss) (AOCI)	$ (11,518)			(10,185)
Huatai Group
General and significant accounting policies [Line Items]
Equity Method Investment, Ownership Percentage			64.20%
Huatai Group
General and significant accounting policies [Line Items]
Subsidiary, Ownership Percentage, Parent	69.60%	69.60%
Subsidiary, Ownership Percentage, Noncontrolling Owner		30.40%
Effect of Modified Retrospective Application Accounting Standards Update 2018-12
General and significant accounting policies [Line Items]
Retained earnings				29	$ 52
Accumulated other comprehensive income (loss) (AOCI)				$ 8	$ 1,800

Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

Amount of accumulated undistributed earnings (deficit).

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

General and significant accounting policies (ASU 2018-12 Transition) (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Jan. 01, 2021

Sep. 30, 2023

Sep. 30, 2022

Sep. 30, 2023

Sep. 30, 2022

Dec. 31, 2022

Dec. 31, 2021

Dec. 31, 2020

Reinsurance recoverable on losses and loss expenses

$ (19,750)

^[1]

$ (19,750)

^[1]

$ (18,859)

^[2]

^[1],[2]

(315)

(302)

6,856

6,031

(3,675)

(3,702)

(3,514)

(3,136)

(188)

(2,507)

(79,705)

$ (75,336)

(79,705)

$ (75,336)

(75,747)

$ (72,330)

(22,684)

(19,713)

$ 7,652

13,109

9,906

13,109

9,906

10,476

770

800

(8,481)

(7,780)

(759)

(377)

Accumulated other comprehensive income (loss) (AOCI)

(51,510)

(48,305)

(11,518)

(10,185)

(13,104)

(12,012)

(35,765)

(31,494)

Net realized (gains) losses

(12,674)

(11,530)

(33,815)

(29,816)

103

456

484

936

32

(69)

154

(85)

(7,106)

(7,063)

(17,937)

(16,833)

(938)

(707)

(2,565)

(1,441)

(2,178)

(1,970)

(6,142)

(5,415)

Income Tax (Expense) Benefit

(154)

202

(550)

(9)

(413)

(263)

(1,189)

(907)

Net income (loss)

(2,043)

(792)

(5,728)

(3,935)

Current discount rate on future policy benefits

683

479

497

1,546

Instrument-specific credit risk on market risk benefits

(5)

8

3

48

Other Comprehensive Income (Loss), Tax

0

109

(104)

1,071

268

(2,658)

4,316

(7,107)

Net Cash Provided by (Used in) Operating Activities

347

(2,658)

4,395

(7,107)

9,446

8,600

Net Cash Provided by (Used in) Financing Activities

(3,325)

(2,730)

Liability for Future Policy Benefit, Remeasurement Gain (Loss)

25

17

21

11

Equity in net income of partially-owned entities

(150)

111

(610)

(180)

Increase (Decrease) in Deferred Income Taxes

39

55

3,270

4,805

2,085

1,904

Accounts payable, accrued expenses, and other liabilities

570

117

(392)

337

Reinsurance recoverable

(388)

(1,850)

Increase (Decrease) in Deferred Policy Acquisition Costs

(832)

(355)

Increase (Decrease) in Other Operating Assets and Liabilities, Net

796

(95)

Net cash flows used for investing activities

(5,434)

(5,202)

Segment Life [Member]

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

(1,452)

(1,265)

(4,015)

(2,403)

(1,442)

(1,244)

(3,962)

(2,325)

(20)

(27)

(87)

(78)

(866)

(666)

(2,283)

(1,275)

(279)

(266)

(829)

(537)

Overseas General Insurance [Member]

(28)

4

(69)

(38)

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

(3,211)

(2,645)

(9,359)

(8,364)

(3,311)

(2,741)

(9,005)

(8,065)

(1,635)

(1,333)

(4,139)

(3,772)

(91)

(108)

(338)

(282)

(827)

(720)

(2,286)

(2,096)

Term Life Insurance | Segment Life [Member]

(10)

(2)

(29)

3

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

372

299

372

299

320

246

454

947

740

947

740

Whole Life Insurance | Segment Life [Member]

(74)

(56)

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

488

350

488

350

395

334

3,767

6,702

4,004

6,702

4,004

Accident and Health Insurance Product Line [Member] | Segment Life [Member]

(16)

(14)

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

1,181

819

1,181

819

902

745

2,569

4,072

4,335

4,072

4,335

Accident and Health Insurance Product Line [Member] | Overseas General Insurance [Member]

(100)

(72)

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Insurance, Other | Segment Life [Member]

773

718

735

718

735

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

127

117

127

117

121

$ 108

89

$ 670

92

670

92

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

$ (15)

(16)

Variable Annuity

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

1,163

Previously Reported

Reinsurance recoverable on losses and loss expenses

(18,901)

(303)

5,788

(3,596)

(3,140)

(2,877)

(76,323)

(20,360)

10,120

$ 6,065

^[3]

0

(7,795)

(292)

Accumulated other comprehensive income (loss) (AOCI)

(48,334)

(10,193)

(12,020)

(31,521)

Net realized (gains) losses

(11,535)

(29,838)

384

787

0

(7,279)

(17,474)

(486)

(790)

(1,975)

(5,451)

Income Tax (Expense) Benefit

188

(21)

(265)

(913)

Net income (loss)

(812)

(4,001)

Current discount rate on future policy benefits

0

Instrument-specific credit risk on market risk benefits

0

Other Comprehensive Income (Loss), Tax

(165)

(1,222)

Net Cash Provided by (Used in) Operating Activities

(3,093)

(8,529)

8,592

Net Cash Provided by (Used in) Financing Activities

(2,722)

Previously Reported | Term Life Insurance | Segment Life [Member]

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Previously Reported | Whole Life Insurance | Segment Life [Member]

^[3]

391

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Previously Reported | Accident and Health Insurance Product Line [Member] | Segment Life [Member]

^[3]

2,578

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Previously Reported | Accident and Health Insurance Product Line [Member] | Overseas General Insurance [Member]

^[3]

2,270

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Previously Reported | Insurance, Other | Segment Life [Member]

^[3]

754

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Previously Reported | Variable Annuity

^[3]

72

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Effect of Modified Retrospective Application Accounting Standards Update 2018-12

$ 1,138

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Reinsurance recoverable on losses and loss expenses

(42)

(1)

243

(106)

(4)

(370)

(576)

(647)

356

800

(15)

(85)

Accumulated other comprehensive income (loss) (AOCI)

(52)

(29)

1,800

$ 8

(8)

(27)

Net realized (gains) losses

(5)

(22)

(72)

(149)

69

85

(216)

(641)

221

651

(5)

(36)

Income Tax (Expense) Benefit

14

12

(2)

(6)

Net income (loss)

(20)

(66)

Current discount rate on future policy benefits

479

1,546

Instrument-specific credit risk on market risk benefits

8

48

Other Comprehensive Income (Loss), Tax

56

151

Net Cash Provided by (Used in) Operating Activities

$ 435

1,422

8

Net Cash Provided by (Used in) Financing Activities

$ (8)

Liability for Future Policy Benefit, Remeasurement Gain (Loss)

1,587

AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, before Tax

77

Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Term Life Insurance | Segment Life [Member]

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Liability for Future Policy Benefit, Remeasurement Gain (Loss)

63

Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Whole Life Insurance | Segment Life [Member]

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Liability for Future Policy Benefit, Remeasurement Gain (Loss)

1,189

Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Accident and Health Insurance Product Line [Member] | Segment Life [Member]

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Liability for Future Policy Benefit, Remeasurement Gain (Loss)

299

Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Accident and Health Insurance Product Line [Member] | Overseas General Insurance [Member]

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Liability for Future Policy Benefit, Remeasurement Gain (Loss)

19

Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Insurance, Other | Segment Life [Member]

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Liability for Future Policy Benefit, Remeasurement Gain (Loss)

17

Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Guaranteed Minimum Death Benefit

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

OCI, Market Risk Benefit, Instrument-Specific Credit Risk, Gain (Loss), before Adjustments and Tax

59

^[4]

$ 84

[1]	Net of valuation allowance for uncollectible reinsurance.
[2]	Net of valuation allowance for uncollectible reinsurance.
[3]	Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.
[4]	Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

Acquisitions (Narrative) (Details) - USD ($) $ in Millions				9 Months Ended
Acquisitions (Narrative) (Details) - USD ($) $ in Millions	Oct. 01, 2023	Jul. 01, 2023	Jul. 01, 2022	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Goodwill				$ 19,554		$ 16,228
Other intangible assets				6,844		5,441
Value of business acquired				3,675		3,702
Repurchase agreements (refer to Note 3 for balances associated with VIEs)				$ 2,617		$ 1,419
Huatai Group
Business Acquisition [Line Items]
Subsidiary, Ownership Percentage, Parent		69.60%		69.60%
Additional 5.4 percent ownership interest obtained in subsidiary		5.40%
Subsidiary, Ownership Percentage, Noncontrolling Owner		30.40%
Outstanding 14.1 percent additional ownership interest agreed on				14.10%
Outstanding 3.0 percent ownership interest agreed on requiring regulatory approval				3.00%
Huatai Group \| Subsequent Event [Member]
Business Acquisition [Line Items]
Additional 2.5 percent ownership interest obtained in subsidiary	2.50%
Huatai Group
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage					64.20%
Cigna's Life Insurance Business in Asia-Pacific Markets [Member]
Business Acquisition [Line Items]
Goodwill			$ 1,177
Other intangible assets			309
Value of business acquired			$ 3,633
Business Acquisition, Effective Date of Acquisition			Jul. 01, 2022
Payments to Acquire Businesses, Gross			$ 5,400
Repurchase agreements (refer to Note 3 for balances associated with VIEs)			$ 2,000
Huatai Group
Business Acquisition [Line Items]
Payments to Acquire Additional Interest in Subsidiaries		$ 318
Deposits previously paid on additional ownership interest agreed on				$ 416
Outstanding payment to be made on additional ownership interest agreed on				$ 433
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value		4,100
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		744
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Loss		17
Write-off of Accumulated AOCI Loss Balance, Equity Method Invesmtent		611
Business combination, Realized Gain (Loss) from Write-off of AOCI		(628)
Goodwill		3,394
Other intangible assets		1,655
Value of business acquired		309
Repurchase agreements (refer to Note 3 for balances associated with VIEs)		$ 1,269
Huatai Group \| Subsequent Event [Member]
Business Acquisition [Line Items]
Deposits previously paid on additional ownership interest obtained	$ 146

Acquisitions (Schedule of recognized identifiable assets acquired and liabilities assumed) (Details) - USD ($)
$ in Millions

Sep. 30, 2023

Jul. 01, 2023

Dec. 31, 2022

Sep. 30, 2022

Jul. 01, 2022

Dec. 31, 2021

Jan. 01, 2021

Business Acquisition [Line Items]

Insurance and reinsurance balances receivable

$ 1,040

$ 941

13,907

11,933

Reinsurance recoverable on losses and loss expenses

19,750

^[1]

18,859

^[2]

^[1],[2]

315

302

3,675

3,702

7,591

7,546

222,748

199,017

79,705

75,747

$ 75,336

$ 72,330

22,684

19,713

Policyholders' account balances

13,109

10,476

9,906

$ 7,652

7,178

3,140

3,008

$ 2,766

Accounts payable, accrued expenses, and other liabilities

8,481

7,780

8,422

7,148

Repurchase agreements (refer to Note 3 for balances associated with VIEs)

759

377

2,617

1,419

Net acquired assets, including goodwill

165,244

148,498

52,373

50,519

47,675

Equity, Attributable to Noncontrolling Interest

5,131

0

Total shareholders' equity

57,504

50,519

$ 47,675

Total liabilities and shareholders’ equity

$ 222,748

$ 199,017

Cigna's Life Insurance Business in Asia-Pacific Markets [Member]

Business Acquisition [Line Items]

Investments and Cash

$ 5,274

Insurance and reinsurance balances receivable

33

52

Reinsurance recoverable on losses and loss expenses

3

85

Goodwill and intangible assets

3,633

1,486

648

11,214

12

60

3,856

Accounts payable, accrued expenses, and other liabilities

115

926

Repurchase agreements (refer to Note 3 for balances associated with VIEs)

886

2,000

Net acquired assets, including goodwill

5,855

5,359

Total liabilities and shareholders’ equity

$ 11,214

Huatai Group

Business Acquisition [Line Items]

Investments and Cash

$ 13,346

Insurance and reinsurance balances receivable

60

277

Reinsurance recoverable on losses and loss expenses

581

27

Goodwill and intangible assets

309

5,049

748

20,397

831

800

Policyholders' account balances

2,287

4,014

Accounts payable, accrued expenses, and other liabilities

644

702

Repurchase agreements (refer to Note 3 for balances associated with VIEs)

232

1,269

Net acquired assets, including goodwill

10,779

4,408

Equity, Attributable to Noncontrolling Interest

5,210

Total shareholders' equity

$ 9,618

[1]	Net of valuation allowance for uncollectible reinsurance.
[2]	Net of valuation allowance for uncollectible reinsurance.

Acquisitions (Acquisition operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Business Acquisition [Line Items]
Total revenues	$ 13,853	$ 12,122	$ 36,743	$ 31,654
Net income	2,040	792	5,725	3,935
Net loss attributable to Chubb	$ 2,043	$ 792	5,728	3,935
Huatai Group
Business Acquisition [Line Items]
Total revenues			389
Net income			(11)
Net loss attributable to Chubb			$ (9)
Cigna's Life Insurance Business in Asia-Pacific Markets [Member]
Business Acquisition [Line Items]
Total revenues				681
Net loss attributable to Chubb				$ 17

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482765/220-10-50-6

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-8

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-9

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-4

Reference 13: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-10

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483581/946-220-45-7

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(18))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(9))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(1)(d))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 60B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-60B

Reference 32: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-7

Reference 35: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1A

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1B

Reference 38: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(20))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

Reference 39: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(22))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-8

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-9

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-11

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480767/946-205-45-3

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483581/946-220-45-7

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(9))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(1)(d))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 19
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-19

Reference 16: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482765/220-10-50-6

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 18: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 29: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-05(b)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479557/942-235-S99-1

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-7

Reference 33: http://www.xbrl.org/2003/role/exampleRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 4J
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481175/810-10-55-4J

Reference 34: http://www.xbrl.org/2003/role/exampleRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 4K
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481175/810-10-55-4K

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1A

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1B

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-2

Reference 38: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-1A

Reference 39: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-1A

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-05(b)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479557/942-235-S99-1

Acquisitions (Finite-lived and indefinite-lived intangible assets acquired) (Details) - USD ($) $ in Millions	Jul. 01, 2023	Sep. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization		$ 3,494	$ 2,982
Total identified intangible assets		$ 6,844	$ 5,441
Huatai Group
Finite-Lived Intangible Assets [Line Items]
Total identified intangible assets	$ 1,655
Huatai Group \| Trademarks
Finite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	398
Huatai Group \| Asset management mutual funds
Finite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	122
Huatai Group \| Distribution Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 332
Finite-Lived Intangible Asset, Useful Life	20 years
Huatai Group \| Asset management mutual funds
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 94
Finite-Lived Intangible Asset, Useful Life	16 years
Huatai Group \| Unearned Premium Reserves Intangible Asset
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 95
Finite-Lived Intangible Asset, Useful Life	3 years
Huatai Group \| Use Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 569
Finite-Lived Intangible Asset, Useful Life	31 years
Huatai Group \| Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 45
Finite-Lived Intangible Asset, Useful Life	6 years

Acquisitions (Pro forma) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Acquisitions (Pro forma) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Business Acquisition [Line Items]
Net premiums earned	$ 12,674	$ 11,530	$ 33,815	$ 29,816
Cigna's Life Insurance Business in Asia-Pacific Markets [Member] \| Pro Forma
Business Acquisition [Line Items]
Net premiums earned		11,530		31,341
Total revenues		12,124		33,161
Business Acquisition, Pro Forma Net Income (Loss)		837		4,172
Huatai Group \| Pro Forma
Business Acquisition [Line Items]
Net premiums earned	12,674	11,952	34,605	30,996
Total revenues	13,755	12,612	37,589	33,019
Business Acquisition, Pro Forma Net income (loss), Including Portion Attributable to Noncontrolling Interests	1,905	787	5,595	3,975
Business Acquisition, Pro Forma Net Income (Loss)	$ 1,912	$ 777	$ 5,587	$ 3,935

Investments (Narrative) (Details) - USD ($)	9 Months Ended
Investments (Narrative) (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Investments [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Transfer, Amount	$ 8,200,000,000
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	7,800,000,000
Debt Securities, Held-to-Maturity, Transfer, Unrealized Gain (Loss)	428,000,000
Restricted assets in fixed maturities and short-term investments	17,505,000,000	$ 15,721,000,000
Restricted assets in cash	192,000,000	$ 115,000,000
Investments
Investments [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 1,108,000,000

Investments (Schedule Of Amortized Cost and Fair Value of Available-for-Sale Securities) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 109,355		$ 93,355
Debt Securities, Available-for-sale, Allowance for Credit Loss	(158)	$ (193)	(169)	$ (147)	$ (78)	$ (14)
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	310		174
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(9,741)		(8,140)
Available for sale, Fair Value	99,766		85,220
U.S. Treasury / Agency
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,944		2,792
Debt Securities, Available-for-sale, Allowance for Credit Loss	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2		5
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(265)		(171)
Available for sale, Fair Value	3,681		2,626
Non-U.S.
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	34,912		28,064
Debt Securities, Available-for-sale, Allowance for Credit Loss	(53)		(59)
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	239		108
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(2,381)		(2,205)
Available for sale, Fair Value	32,717		25,908
Corporate and asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	44,932		40,547
Debt Securities, Available-for-sale, Allowance for Credit Loss	(104)		(107)
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	61		49
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(4,034)		(3,534)
Available for sale, Fair Value	40,855		36,955
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	22,402		17,871
Debt Securities, Available-for-sale, Allowance for Credit Loss	(1)		(3)
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	6		4
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(2,802)		(2,021)
Available for sale, Fair Value	19,605		15,851
Municipal
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,165		4,081
Debt Securities, Available-for-sale, Allowance for Credit Loss	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2		8
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(259)		(209)
Available for sale, Fair Value	$ 2,908		$ 3,880

Investments (Schedule Of Amortized Cost And Fair Value Of Held-to-Maturity Fixed Maturities) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss	$ 0	$ 0	$ 34	$ 33	$ 34	$ 35
Debt securities, held to maturity, net carrying value	0		8,848
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			3
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(412)
Held to maturity, Fair Value	$ 0		8,439
U.S. Treasury / Agency
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			0
Debt securities, held to maturity, net carrying value			1,417
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			1
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(48)
Held to maturity, Fair Value			1,370
Non-U.S.
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			4
Debt securities, held to maturity, net carrying value			1,136
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			0
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(82)
Held to maturity, Fair Value			1,054
Corporate and asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			28
Debt securities, held to maturity, net carrying value			1,705
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			1
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(126)
Held to maturity, Fair Value			1,580
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			1
Debt securities, held to maturity, net carrying value			1,455
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			0
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(104)
Held to maturity, Fair Value			1,351
Municipal
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			1
Debt securities, held to maturity, net carrying value			3,135
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			1
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(52)
Held to maturity, Fair Value			$ 3,084

Investments (Held-to-Maturity Credit Quality Indicator) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 8,882
Fixed Maturities Percent of Total Amortized cost	100.00%
Standard & Poor's, AAA Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 1,612
Fixed Maturities Percent of Total Amortized cost	18.00%
Standard & Poor's, AA Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 5,023
Fixed Maturities Percent of Total Amortized cost	57.00%
Standard & Poor's, A Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 1,634
Fixed Maturities Percent of Total Amortized cost	18.00%
Standard & Poor's, BBB Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 593
Fixed Maturities Percent of Total Amortized cost	7.00%
Standard & Poor's, BB Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 20
Fixed Maturities Percent of Total Amortized cost	0.00%

Investments (Schedule Of Fixed Maturities By Contractual Maturity) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Available for sale, Due in 1 year or less, Fair Value & Net Carrying Value	$ 4,805	$ 2,962
Available for sale, Due after 1 year through 5 years, Fair Value & Net Carrying Value	31,738	24,791
Available for sale, Due after 5 years through 10 years, Fair Value & Net Carrying Value	27,452	26,679
Available for sale, Due after 10 years, Fair Value & Net Carrying Value	16,166	14,937
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value	80,161	69,369
Available for sale, Mortgage backed securities, Fair Value & Net Carrying Value	19,605	15,851
Available for sale, Fair Value	99,766	85,220
Debt securities, Held-to-maturity, maturity, allocated and single maturity date, within one year, net carrying value	0	1,015
Held to maturity, Due in 1 year or less, Fair Value	0	1,003
Held-to-maturity, after one through five years, net carrying value	0	3,658
Held to maturity, Due after 1 year through 5, Fair Value	0	3,531
Held-to-maturity, after 5 through 10 years, net carrying value	0	1,460
Held to maturity, Due after 5 years through 10 years, Fair Value	0	1,423
Held-to-maturity, after 10 years, net carrying value	0	1,260
Held to maturity, Due after 10 years, Fair Value	0	1,131
Debt securities, Held-to-maturity, maturity, allocated and single maturity date, net carrying value	0	7,393
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Fair Value	0	7,088
Held-to-maturity, MBS, net carrying value	0	1,455
Held to maturity, Mortgage backed securities, Fair Value	0	1,351
Debt securities, held to maturity, net carrying value	0	8,848
Held to maturity, Fair Value	$ 0	$ 8,439

Investments (Aggregate Fair Value And Gross Unrealized Loss By Length Of Time Security Has Continuously Been In Unrealized Loss Position) (Details) - Fixed Maturities [Member] - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 27,035	$ 57,189
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(974)	(4,115)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	56,471	14,991
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(7,062)	(2,291)
Debt Securities, Available-for-sale, Unrealized Loss Position	83,506	72,180
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(8,036)	(6,406)
U.S. Treasury / Agency
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	1,108	2,152
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(32)	(125)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	2,449	386
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(233)	(46)
Debt Securities, Available-for-sale, Unrealized Loss Position	3,557	2,538
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(265)	(171)
Non-U.S.
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	8,591	15,538
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(280)	(1,012)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	16,631	5,490
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,670)	(704)
Debt Securities, Available-for-sale, Unrealized Loss Position	25,222	21,028
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,950)	(1,716)
Corporate and asset-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	10,120	25,687
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(362)	(1,793)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	22,672	4,190
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,441)	(552)
Debt Securities, Available-for-sale, Unrealized Loss Position	32,792	29,877
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,803)	(2,345)
Mortgage-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	5,827	10,561
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(249)	(1,033)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	13,450	4,770
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,510)	(941)
Debt Securities, Available-for-sale, Unrealized Loss Position	19,277	15,331
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,759)	(1,974)
Municipal
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	1,389	3,251
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(51)	(152)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,269	155
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(208)	(48)
Debt Securities, Available-for-sale, Unrealized Loss Position	2,658	3,406
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (259)	$ (200)

Investments (Rollforward of expected credit-losses, AFS) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Debt Securities, Available for sale, Allowance for Credit Loss	$ 158	$ 147	$ 158	$ 147	$ 193	$ 169	$ 78	$ 14
Debt Securities, Available-for-sale, Allowance for Credit Loss, Period Increase (Decrease)	34	91	172	169
Debt Securities, Available-for-sale, Allowance for Credit Loss, Writeoff	(1)	0	(5)	0
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Foreign Currency Revaluation	0	(2)	0	(2)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Recovery	$ (68)	$ (20)	$ (178)	$ (34)

Investments (Rollforward of expected credit losses HTM) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss	$ 0	$ 33	$ 0	$ 33	$ 0	$ 34	$ 34	$ 35
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Period Increase (Decrease)	0	0	0	1
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Recovery	$ 0	$ (1)	$ (34)	$ (3)

Investments (Net Realized Gains (Losses) And Losses Included In Net Realized Gains (Losses) And Other Comprehensive Income) (Detail) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2023

Sep. 30, 2022

Sep. 30, 2023

Sep. 30, 2022

Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease)

$ 34

$ 91

$ 172

$ 169

Debt Securities, Available-for-sale, Gain (Loss), Total

(70)

(279)

(357)

(857)

Net realized gains (losses)

(103)

(456)

(484)

(936)

Foreign exchange

(67)

202

(122)

546

54

(163)

(178)

(1)

Other

^[1]

92

(40)

79

(114)

Huatai Group

Fixed Maturities [Member]

Other

116

Debt Securities, Available-for-Sale, Realized Gain (Loss), Excluding Other-than-temporary Impairment

97

144

116

545

Debt Securities, Available-for-Sale, Realized Loss, Excluding Other-than-temporary Impairment

(185)

(331)

(457)

(1,158)

Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease)

34

(70)

44

(133)

Debt Securities, Available-For-Sale, Credit Impairment Charges Intent to Sell

^[2]

(16)

(22)

(60)

(111)

Equity Securities

Equity Securities, FV-NI, Realized Gain (Loss)

(100)

(80)

(61)

(287)

Other Investments

Net realized gains (losses)

(1)

Alternative Investment

Net realized gains (losses)

40

(42)

75

17

Investment and embedded derivative instruments

(7)

(19)

(6)

(9)

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

$ 9

$ (198)

$ (92)

$ (232)

[1]	The three and nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.
[2]	Relates to certain securities we intended to sell and securities written to market entering default.(2)The three and nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

Investments Schedule of Gains and Losses on Equity and Other Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)	$ (103)	$ (456)	$ (484)	$ (936)
Equity Securities
Gain (Loss) on Securities [Line Items]
Equity Securities, FV-NI, Realized Gain (Loss)	(100)	(80)	(61)	(287)
Less: Net gains (losses) recognized from sales of securities	(45)	(12)	(48)	406
Unrealized Gain (Loss) on Investments	(55)	(68)	(13)	(693)
Other Investments
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)	(1)		(1)
Less: Net gains (losses) recognized from sales of securities	0		0
Unrealized Gain (Loss) on Investments	(1)		(1)
Equity securities and other investments
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)		(122)		(270)
Less: Net gains (losses) recognized from sales of securities		(12)		406
Unrealized Gain (Loss) on Investments		(110)		(676)
Fixed maturities trading, equity securities and other investments
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)	(61)		13
Less: Net gains (losses) recognized from sales of securities	(45)		(48)
Unrealized Gain (Loss) on Investments	(16)		61
Alternative Investment
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)	40	(42)	75	17
Less: Net gains (losses) recognized from sales of securities	0	0	0	0
Unrealized Gain (Loss) on Investments	$ 40	$ (42)	$ 75	$ 17

Investments Entities that Calculate Net Asset Value Per Share (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	$ 6,309	$ 7,395
Alternative Investment	13,362	12,355
Financial [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	384	505
Alternative Investment	1,219	1,074
Real Estate Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	526	681
Alternative Investment	2,136	2,166
Distressed Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	810	755
Alternative Investment	1,160	1,048
Private Credit Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	309	429
Alternative Investment	319	215
Private Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	4,280	5,025
Alternative Investment	8,222	7,424
Vintage Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	0	0
Alternative Investment	78	55
Investment Funds Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	0	0
Alternative Investment	$ 228	$ 373
Minimum \| Financial [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	2 years	2 years
Minimum \| Real Estate Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	2 years	2 years
Minimum \| Distressed Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	2 years	2 years
Minimum \| Private Credit Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	3 years	3 years
Minimum \| Private Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	2 years	2 years
Minimum \| Vintage Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	1 year	1 year
Maximum \| Financial [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	10 years	10 years
Maximum \| Real Estate Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	13 years	13 years
Maximum \| Distressed Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	8 years	8 years
Maximum \| Private Credit Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	8 years	8 years
Maximum \| Private Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	14 years	14 years
Maximum \| Vintage Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	3 years	3 years

Investments (Schedule Of Components Of Restricted Assets) (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Investments [Line Items]
Total restricted assets	$ 17,697	$ 15,836
Asset Pledged as Collateral without Right
Investments [Line Items]
Trust funds	8,462	8,120
Deposits with U.S. regulatory authorities	2,290	2,345
Deposits with non-U.S. regulatory authorities	3,366	2,959
Assets pledged under repurchase agreements	2,753	1,527
Other pledged assets	$ 826	$ 885

Investments Variable Interest Entities Consolidated (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Other Short-Term Investments	$ 5,454	$ 4,960
Debt Securities, Available-for-Sale	99,766	85,220
Equity securities, at fair value	3,395	827
Alternative Investment	13,362	12,355
Other investments	5,583	1,341
Total investments (refer to Note 3 for balances associated with variable interest entities (VIEs))	129,961	113,551
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Total liabilities (preliminary)	165,244	148,498
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)	5,131	0
Total cash and restricted cash shown in the Consolidated statement of cash flows	2,778	2,127	$ 2,264	$ 1,811
Other assets	7,591	7,546
Total assets (preliminary)	222,748	$ 199,017
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Other Short-Term Investments	466
Equity securities, at fair value	986
Alternative Investment	21
Other investments	3,937
Total investments (refer to Note 3 for balances associated with variable interest entities (VIEs))	5,410
Other liabilities	32
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	837
Total liabilities (preliminary)	869
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)	3,176
Economic Interests in Consolidated Investment Products	1,551
Total cash and restricted cash shown in the Consolidated statement of cash flows	164
Other assets	22
Total assets (preliminary)	$ 5,596

Fair value measurements (Financial Instruments Measured At Fair Value On Recurring Basis) (Details) - USD ($)
$ in Millions

Sep. 30, 2023

Dec. 31, 2022

$ 99,766

$ 85,220

3,395

827

5,454

4,960

5,583

1,341

1,469

1,523

5,306

5,190

Investment Funds Limited Partnerships Partially Owned Investment Companies Fair Value

770

800

Alternative Investment

13,362

12,355

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Alternative Investment

13,362

12,355

Policy Loans

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

603

343

Other Investments

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

47

U.S. Treasury / Agency

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

3,681

2,626

Non-U.S.

Corporate and asset-backed securities

32,717

25,908

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Mortgage-backed securities

40,855

36,955

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

19,605

15,851

Municipal

Level 1 | Fair Value, Recurring

2,908

3,880

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

3,084

2,100

3,310

737

2,546

3,108

569

^[1]

552

^[2]

0

42

82

0

53

33

5,217

5,101

14,821

^[1]

11,713

^[2]

168

139

0

0

0

^[3]

0

^[4]

Level 1 | U.S. Treasury / Agency | Fair Value, Recurring

168

139

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 1 | Non-U.S. | Fair Value, Recurring

3,084

2,100

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 1 | Corporate and asset-backed securities | Fair Value, Recurring

0

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 1 | Mortgage-backed securities | Fair Value, Recurring

0

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 1 | Municipal | Fair Value, Recurring

0

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 2 | Fair Value, Recurring

0

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

93,455

80,096

0

2,906

1,849

4,364

^[1]

399

^[2]

1,469

1,523

0

48

17

0

89

102,331

^[1]

83,973

^[2]

0

68

53

4

0

^[3]

0

^[4]

Level 2 | U.S. Treasury / Agency | Fair Value, Recurring

72

53

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 2 | Non-U.S. | Fair Value, Recurring

597

526

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 2 | Corporate and asset-backed securities | Fair Value, Recurring

32,084

25,344

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 2 | Mortgage-backed securities | Fair Value, Recurring

38,286

34,506

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 2 | Municipal | Fair Value, Recurring

19,580

15,840

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 3 | Fair Value, Recurring

2,908

3,880

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

3,227

3,024

85

90

2

3

0

^[1]

0

^[2]

0

0

0

0

0

3,314

^[1]

3,117

^[2]

0

0

0

770

^[3]

800

^[4]

Level 3 | U.S. Treasury / Agency | Fair Value, Recurring

770

800

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 3 | Non-U.S. | Fair Value, Recurring

0

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 3 | Corporate and asset-backed securities | Fair Value, Recurring

633

564

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 3 | Mortgage-backed securities | Fair Value, Recurring

2,569

2,449

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Level 3 | Municipal | Fair Value, Recurring

25

11

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Total Level 1, Level 2, and Level 3 | Fair Value, Recurring

0

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

99,766

85,220

3,395

827

5,454

4,960

4,933

^[1]

951

^[2]

1,469

1,523

42

82

48

17

53

33

5,306

5,190

120,466

^[1]

98,803

^[2]

168

139

68

53

4

770

^[3]

800

^[4]

Total Level 1, Level 2, and Level 3 | U.S. Treasury / Agency | Fair Value, Recurring

1,010

992

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Total Level 1, Level 2, and Level 3 | Non-U.S. | Fair Value, Recurring

3,681

2,626

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Total Level 1, Level 2, and Level 3 | Corporate and asset-backed securities | Fair Value, Recurring

32,717

25,908

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Total Level 1, Level 2, and Level 3 | Mortgage-backed securities | Fair Value, Recurring

40,855

36,955

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Total Level 1, Level 2, and Level 3 | Municipal | Fair Value, Recurring

19,605

15,851

Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]

Reinsurance recoverable on unpaid losses and loss expenses

$ 2,908

$ 3,880

[1]	Excluded from the table above are policy loans of $603 million, and other investments of $47 million at September 30, 2023, measured using NAV as a practical expedient.(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $13,362 million at September 30, 2023, measured using NAV as a practical expedient.
[2]	Excluded from the table above are policy loans of $343 million and other investments of $47 million at December 31, 2022, measured using NAV as a practical expedient.(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $12,355 million at December 31, 2022, measured using NAV as a practical expedient.
[3]	Refer to Note 11 for additional information on Market risk benefits.
[4]	Refer to Note 11 for additional information on Market risk benefits.

Fair value measurements (Assets, Measured At Fair Value Using Significant Unobservable Inputs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other comprehensive loss, before income tax	Other comprehensive loss, before income tax	Other comprehensive loss, before income tax	Other comprehensive loss, before income tax
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Total revenues	Total revenues	Total revenues	Total revenues
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Total revenues	Total revenues	Total revenues
Level 3 \| Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	$ 86	$ 81	$ 90	$ 77
Transfers Into Level 3, Asset	0	0	0	1
Transfers out of Level 3, Assets	0	0	0	0
Change in Net Unrealized Gains (Losses) included in OCI, Assets	0	0	0	0
Net Realized Gains/ (Losses), Assets	0	3	(6)	7
Purchases, Assets	4	3	15	6
Sales, Assets	(5)	(4)	(14)	(8)
Settlements, Assets	0	0	0	0
Balance-End of Period, Assets	85	83	85	83
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	0	3	(6)	6
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	0	0	0	0
Level 3 \| Short-term Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	3	9	3	7
Transfers Into Level 3, Asset	0	0	0	0
Transfers out of Level 3, Assets	0	0	0	0
Change in Net Unrealized Gains (Losses) included in OCI, Assets	0	0	(1)	0
Net Realized Gains/ (Losses), Assets	0	(1)	0	(1)
Purchases, Assets	0	1	3	8
Sales, Assets	(1)	0	(3)	0
Settlements, Assets	0	(6)	0	(11)
Balance-End of Period, Assets	2	3	2	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	0	(1)	0	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	0	0	0	0
Level 3 \| Available-for-Sale Debt Securities \| Non-U.S.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	649	549	564	633
Transfers Into Level 3, Asset	0	0	21	23
Transfers out of Level 3, Assets	(22)	0	(22)	(23)
Change in Net Unrealized Gains (Losses) included in OCI, Assets	(6)	(34)	5	(88)
Net Realized Gains/ (Losses), Assets	(2)	(4)	(3)	(6)
Purchases, Assets	46	39	151	108
Sales, Assets	(17)	(19)	(52)	(44)
Settlements, Assets	(15)	(25)	(31)	(97)
Balance-End of Period, Assets	633	506	633	506
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	(1)	(1)	(1)	(3)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	(8)	(35)	1	(89)
Level 3 \| Available-for-Sale Debt Securities \| Corporate and asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	2,524	2,261	2,449	2,049
Transfers Into Level 3, Asset	0	2	3	41
Transfers out of Level 3, Assets	(10)	(4)	(23)	(97)
Change in Net Unrealized Gains (Losses) included in OCI, Assets	6	(16)	8	(68)
Net Realized Gains/ (Losses), Assets	(4)	(9)	(7)	(9)
Purchases, Assets	158	164	481	658
Sales, Assets	(40)	(8)	(70)	(59)
Settlements, Assets	(65)	(94)	(272)	(219)
Balance-End of Period, Assets	2,569	2,296	2,569	2,296
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	(4)	(3)	(6)	(4)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	4	(19)	2	(71)
Level 3 \| Available-for-Sale Debt Securities \| Mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	10	19	11	26
Transfers Into Level 3, Asset	0	0	0	0
Transfers out of Level 3, Assets	0	0	0	(5)
Change in Net Unrealized Gains (Losses) included in OCI, Assets	0	0	0	0
Net Realized Gains/ (Losses), Assets	0	0	0	0
Purchases, Assets	16	4	16	4
Sales, Assets	0	0	0	0
Settlements, Assets	(1)	(4)	(2)	(6)
Balance-End of Period, Assets	25	19	25	19
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	0	0	0	0
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	$ 0	$ 0	$ 0	$ 0

Fair value measurements (Carrying Values And Fair Values Of Financial Instruments Not Measured At Fair Value) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value	$ 0	$ 8,439
Private debt held-for-investment	2,401	0
Total assets (preliminary)	222,748	199,017
Debt Securities, Held-to-maturity		8,882
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Short-term debt	700	475
Long-term debt	13,736	14,402
Total liabilities	165,244	148,498
Portion at Other than Fair Value Measurement \| Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,299
Private debt held-for-investment	0
Total assets (preliminary)	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	0	0
Short-Term Debt, Fair Value	0	0
Long-term Debt, Fair Value	0	0
Trust preferred securities	0	0
Total liabilities	0	0
Portion at Other than Fair Value Measurement \| Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		7,140
Private debt held-for-investment	0
Total assets (preliminary)	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Short-Term Debt, Fair Value	688	473
Long-term Debt, Fair Value	11,627	12,495
Trust preferred securities	362	383
Total liabilities	15,294	14,770
Portion at Other than Fair Value Measurement \| Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Private debt held-for-investment	2,389
Total assets (preliminary)	2,389
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	0	0
Short-Term Debt, Fair Value	0	0
Long-term Debt, Fair Value	0	0
Trust preferred securities	0	0
Total liabilities	0	0
Portion at Other than Fair Value Measurement \| Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		8,439
Private debt held-for-investment	2,389
Total assets (preliminary)	2,389
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Short-Term Debt, Fair Value	688	473
Long-term Debt, Fair Value	11,627	12,495
Trust preferred securities	362	383
Total liabilities	15,294	14,770
Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Private debt held-for-investment	2,401
Total assets (preliminary)	2,401
Debt Securities, Held-to-maturity		8,848
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Short-term debt	700	475
Long-term debt	13,736	14,402
Trust preferred securities	308	308
Total liabilities	$ 17,361	16,604
U.S. Treasury / Agency
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,370
Debt Securities, Held-to-maturity		1,417
U.S. Treasury / Agency \| Portion at Other than Fair Value Measurement \| Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,299
U.S. Treasury / Agency \| Portion at Other than Fair Value Measurement \| Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		71
U.S. Treasury / Agency \| Portion at Other than Fair Value Measurement \| Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
U.S. Treasury / Agency \| Portion at Other than Fair Value Measurement \| Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,370
U.S. Treasury / Agency \| Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		1,417
Non-U.S.
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,054
Debt Securities, Held-to-maturity		1,140
Non-U.S. \| Portion at Other than Fair Value Measurement \| Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Non-U.S. \| Portion at Other than Fair Value Measurement \| Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,054
Non-U.S. \| Portion at Other than Fair Value Measurement \| Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Non-U.S. \| Portion at Other than Fair Value Measurement \| Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,054
Non-U.S. \| Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		1,136
Corporate and asset-backed securities
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,580
Debt Securities, Held-to-maturity		1,733
Corporate and asset-backed securities \| Portion at Other than Fair Value Measurement \| Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Corporate and asset-backed securities \| Portion at Other than Fair Value Measurement \| Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,580
Corporate and asset-backed securities \| Portion at Other than Fair Value Measurement \| Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Corporate and asset-backed securities \| Portion at Other than Fair Value Measurement \| Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,580
Corporate and asset-backed securities \| Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		1,705
Mortgage-backed securities
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,351
Debt Securities, Held-to-maturity		1,456
Mortgage-backed securities \| Portion at Other than Fair Value Measurement \| Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Mortgage-backed securities \| Portion at Other than Fair Value Measurement \| Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,351
Mortgage-backed securities \| Portion at Other than Fair Value Measurement \| Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Mortgage-backed securities \| Portion at Other than Fair Value Measurement \| Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,351
Mortgage-backed securities \| Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		1,455
Municipal
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		3,084
Debt Securities, Held-to-maturity		3,136
Municipal \| Portion at Other than Fair Value Measurement \| Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Municipal \| Portion at Other than Fair Value Measurement \| Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		3,084
Municipal \| Portion at Other than Fair Value Measurement \| Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Municipal \| Portion at Other than Fair Value Measurement \| Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		3,084
Municipal \| Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		$ 3,135

Reinsurance (Reinsurance Recoverable on Ceded Reinsurance) (Details) - USD ($)
$ in Millions

Sep. 30, 2023

Dec. 31, 2022

Sep. 30, 2022

Dec. 31, 2021

Reinsurance Disclosures [Abstract]

^[1]

$ 17,808

$ 17,086

$ 17,313

$ 16,132

Reinsurance recoverable on paid losses and loss expenses

^[1],[2]

1,942

1,773

Reinsurance recoverable on losses and loss expenses

19,750

^[1]

18,859

^[2]

Reinsurance Recoverables on Unpaid Losses, Allowance

^[1],[2]

315

302

318

289

Reinsurance Recoverables on Paid Losses, Allowance

52

62

Reinsurance Recoverable, Allowance for Credit Loss, Total

370

351

$ 352

$ 329

Reinsurance Recoverables on Future Policy Benefits, Allowance

$ 1

$ 4

[1]	Net of valuation allowance for uncollectible reinsurance.
[2]	Net of valuation allowance for uncollectible reinsurance.

Reinsurance, Allowance (Details) - USD ($) $ in Millions	9 Months Ended
Reinsurance, Allowance (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Reinsurance Disclosures [Abstract]
Valuation allowance for uncollectible reinsurance - beginning of period	$ 351	$ 329
Provision for uncollectible reinsurance	27	30
Write-offs charged against the valuation allowance	(8)	(4)
Foreign exchange revaluation	0	(3)
Valuation allowance for uncollectible reinsurance - end of period	$ 370	$ 352

Deferred acquisition costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	$ 6,856		$ 6,856
Balance – beginning of period			6,031
Amortization expense	(2,178)	$ (1,970)	(6,142)	$ (5,415)
Balance - end of period	6,856		6,856
Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Amortization expense	(279)	(266)	(829)	(537)
Overseas General Insurance [Member]
Deferred Policy Acquisition Cost [Line Items]
Amortization expense	(827)	(720)	(2,286)	(2,096)
Short-Duration Insurance, Other
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	3,283	2,809	3,283	2,809
Balance - end of period	3,283	2,809	3,283	2,809
Long-Duration Insurance, Other
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	3,573	2,979	3,573	2,979
Balance - end of period	3,573	2,979	3,573	2,979
Long-Duration Insurance, Other \| Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	2,952	2,346	2,952	2,346
Balance – beginning of period			2,514	2,204
Capitalizations			722	457
Amortization expense			(262)	(213)
Other (including foreign exchange)			(22)	(102)
Balance - end of period	2,952	2,346	2,952	2,346
Long-Duration Insurance, Other \| Overseas General Insurance [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	621	633	621	633
Balance - end of period	621	633	621	633
Term Life Insurance \| Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	372	299	372	299
Balance – beginning of period			320	246
Capitalizations			118	111
Amortization expense			(74)	(56)
Other (including foreign exchange)			8	(2)
Balance - end of period	372	299	372	299
Universal Life \| Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	784	761	784	761
Balance – beginning of period			776	771
Capitalizations			85	95
Amortization expense			(57)	(55)
Other (including foreign exchange)			(20)	(50)
Balance - end of period	784	761	784	761
Whole Life Insurance \| Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	488	350	488	350
Balance – beginning of period			395	334
Capitalizations			102	46
Amortization expense			(16)	(14)
Other (including foreign exchange)			7	(16)
Balance - end of period	488	350	488	350
Accident and Health Insurance Product Line [Member] \| Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	1,181	819	1,181	819
Balance – beginning of period			902	745
Capitalizations			392	166
Amortization expense			(100)	(72)
Other (including foreign exchange)			(13)	(20)
Balance - end of period	1,181	819	1,181	819
Insurance, Other \| Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	127	117	127	117
Balance – beginning of period			121	108
Capitalizations			25	39
Amortization expense			(15)	(16)
Other (including foreign exchange)			(4)	(14)
Balance - end of period	$ 127	$ 117	$ 127	$ 117

Goodwill and Value of business acquired (Roll-forward of Goodwill by Business Segment) (Details)
$ in Millions

9 Months Ended

Sep. 30, 2023

USD ($)

$ 16,228

3,394

^[1]

(68)

goodwill attributable to noncontrolling interests

19,554

1,000

North America Commercial P&C Insurance [Member]

6,945

0

North America Personal P&C Insurance [Member]

6,945

2,230

0

North America Agricultural Insurance [Member]

2,230

134

0

Overseas General Insurance [Member]

134

4,605

44

Global Reinsurance [Member]

5,211

371

0

371

Segment Life [Member]

1,943

(112)

Huatai Group | North America Commercial P&C Insurance [Member]

4,663

Huatai Group | North America Personal P&C Insurance [Member]

0

^[1]

Huatai Group | North America Agricultural Insurance [Member]

0

^[1]

Huatai Group | Overseas General Insurance [Member]

0

^[1]

Huatai Group | Global Reinsurance [Member]

562

^[1]

Huatai Group | Segment Life [Member]

0

^[1]

Balance, beginning of period

$ 2,832

^[1]

[1]	$1.0 billion attributable to noncontrolling interests.

Goodwill and Value of business acquired (VOBA) (Details)
$ in Millions

9 Months Ended

Sep. 30, 2023

USD ($)

VOBA Roll Forward

$ 3,702

Present Value of Future Insurance Profits, Addition from Acquisition

309

Amortization of Value of Business Acquired (VOBA)

235

^[1]

Acquired Indefinite-Lived Intangible Assets [Line Items]

(101)

Balance, end of period

3,675

Amortization of Value of Business Acquired (VOBA)

$ 235

^[1]

[1]	Recognized in Policy acquisition costs in the Consolidated statements of operations.

Goodwill and Value of business acquired, and Other Intangible Assets (Other Intangible Assets) (Details)) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets subject to amortization	$ 3,350	$ 2,459
Intangible assets not subject to amortization	3,494	2,982
Other intangible assets	6,844	$ 5,441
Acquired Indefinite-Lived Intangible Assets [Line Items]
2028, Other intangible assets	$ 253

Value of Business Acquired, Goodwill, and Other Intangible Assets (Estimated Amortization Expense Over Next Five Years) (Details)
$ in Millions

Sep. 30, 2023

USD ($)

Fourth quarter of 2023, VOBA

$ 67

103

354

314

288

265

253

1,577

270

202

181

Present Value of Future Insurance Profits, Expected Amortization, Total

165

1,115

Huatai Group | Unearned Premium Reserves Intangible Asset

230

16

^[1]

30

^[1]

16

^[1]

7

^[1]

3

^[1]

0

^[1]

Huatai Group | Use Rights [Member]

72

^[1]

3

^[2]

12

^[2]

12

^[2]

12

^[2]

13

^[2]

13

^[2]

Chubb Acquired Purchased Intangible assets

65

^[2]

84

312

286

269

249

240

Unpaid Losses and Loss Expenses [Roll Forward]

$ 1,440

[1]	Recognized in Policy acquisition costs in the Consolidated statements of operations.
[2]	Recognized in Other (income) expense in the Consolidated statements of operations

Unpaid losses and loss expenses (RF) (Details) - USD ($)
$ in Millions

9 Months Ended

Sep. 30, 2023

Sep. 30, 2022

Gross unpaid losses and loss expenses – beginning of period

$ 75,747

$ 72,330

Reinsurance recoverable on unpaid losses – beginning of period (1)

^[1]

(17,086)

(16,132)

Net unpaid losses and loss expenses – beginning of period

58,661

56,198

Current Year Claims and Claims Adjustment Expense

18,604

17,755

Prior Year Claims and Claims Adjustment Expense

^[2]

(667)

(922)

Total, Incurred

17,937

16,833

Net loss and loss expenses paid, Current Year

4,853

4,511

Net loss and loss expenses paid, Prior Years

10,158

9,217

Total, Paid

15,011

13,728

Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Revaluation And Other

(95)

(1,280)

Net unpaid losses and loss expenses – end of period

61,897

58,023

Reinsurance recoverable on unpaid losses (1)

^[1]

17,808

17,313

Gross unpaid losses and loss expenses – end of period

79,705

75,336

prior period development, net adjustments

71

$ 213

Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease), Gross

4,000

Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease)

$ 3,200

[1]	Net of valuation allowance for uncollectible reinsurance.
[2]	Relates to prior period loss reserve development only and excludes prior period development related to reinstatement premiums, expense adjustments, earned premiums, and development on international A&H lines totaling $71 million and $213 million for the nine months ended September 30, 2023 and 2022, respectively.

Unpaid losses and loss expenses Unpaid losses and loss expenses (PPD table) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	$ (200)	$ (222)	$ (596)	$ (709)
North America Commercial P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(84)	(166)	(302)	(561)
North America Commercial P&C Insurance [Member] \| Auto Liability [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		58
North America Commercial P&C Insurance [Member] \| Workers' Compensation Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	71	(164)	379
North America Commercial P&C Insurance [Member] \| Commercial Excess and Umbrella [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		71
North America Commercial P&C Insurance [Member] \| Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		(132)
North America Commercial P&C Insurance [Member] \| Multi-Line Loss Sensitive
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		(66)
North America Personal P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(119)	(133)	(135)	(187)
North American Agriculture Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(9)	9	(12)	(17)
Overseas General Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(49)	(5)	(253)	(238)
Overseas General Insurance [Member] \| Accident and Health Insurance Product Line [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			45	(75)
Overseas General Insurance [Member] \| Property, Liability and Casualty Insurance Product Line
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development				(67)
Overseas General Insurance [Member] \| Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			147
Overseas General Insurance [Member] \| Casualty lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		(82)
Overseas General Insurance [Member] \| Environmental lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development				(34)
Overseas General Insurance [Member] \| Financial [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		114
Overseas General Insurance [Member] \| Personal Lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development				(53)
Global Reinsurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	(25)	22
Corporate Segment [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		73	131	272
Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(316)	(261)	(659)	(654)
Short Tail [Member] \| North America Commercial P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(191)	(137)	(279)	(246)
Short Tail [Member] \| North America Personal P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(119)	(133)	(135)	(187)
Short Tail [Member] \| North American Agriculture Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(9)	9	(12)	(17)
Short Tail [Member] \| Overseas General Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	3	0	(201)	(233)
Short Tail [Member] \| Global Reinsurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	(32)	29
Short Tail [Member] \| Corporate Segment [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	116	39	63	(55)
Long Tail [Member] \| North America Commercial P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	107	(29)	(23)	(315)
Long Tail [Member] \| North America Personal P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
Long Tail [Member] \| North American Agriculture Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
Long Tail [Member] \| Overseas General Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(52)	(5)	(52)	(5)
Long Tail [Member] \| Global Reinsurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	7	(7)
Long Tail [Member] \| Corporate Segment [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	$ 61	$ 73	131	272
Long Tail [Member] \| Corporate Segment [Member] \| Other [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			$ 49	$ 155

Unpaid losses and loss expenses Unpaid losses and loss expenses (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jul. 01, 2023	Dec. 31, 2022	Dec. 31, 2021
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	$ (200)	$ (222)	$ (596)	$ (709)
Unpaid losses and loss expenses	79,705	75,336	79,705	75,336		$ 75,747	$ 72,330
Net loss and loss expenses paid, Prior Years			10,158	9,217
Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease), Gross			4,000
Liability for Unpaid Claims and Claims Adjustment Expense, Net	61,897	58,023	61,897	58,023		$ 58,661	56,198
Huatai Group
Liability for Claims and Claims Adjustment Expense [Line Items]
Unpaid losses and loss expenses					$ 831
Liability for Unpaid Claims and Claims Adjustment Expense, Net					$ 405		$ 0
Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	116	39	63	(55)
Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(316)	(261)	(659)	(654)
North America Commercial P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(84)	(166)	(302)	(561)
North America Commercial P&C Insurance [Member] \| Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	107	(29)	(23)	(315)
North America Commercial P&C Insurance [Member] \| Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(191)	(137)	(279)	(246)
North America Commercial P&C Insurance [Member] \| Commercial Excess and Umbrella [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		71
North America Commercial P&C Insurance [Member] \| Workers' Compensation Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	71	(164)	379
North America Commercial P&C Insurance [Member] \| Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		(132)
North America Commercial P&C Insurance [Member] \| Auto Liability [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		58
North America Agricultural Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(9)	9	(12)	(17)
North America Agricultural Insurance [Member] \| Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
North America Agricultural Insurance [Member] \| Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(9)	9	(12)	(17)
Corporate Segment [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		73	131	272
Corporate Segment [Member] \| Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	61	73	131	272
Corporate Segment [Member] \| Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
Corporate Segment [Member] \| Other [Member] \| Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			49	155
Overseas General Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(49)	(5)	(253)	(238)
Overseas General Insurance [Member] \| Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(52)	(5)	(52)	(5)
Overseas General Insurance [Member] \| Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	3	0	(201)	(233)
Overseas General Insurance [Member] \| Accident and Health Insurance Product Line [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			45	(75)
Overseas General Insurance [Member] \| Property, Liability and Casualty Insurance Product Line
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development				(67)
Overseas General Insurance [Member] \| Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			147
Overseas General Insurance [Member] \| financial lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	77
Overseas General Insurance [Member] \| Political Risk
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	51
North America Personal P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(119)	(133)	(135)	(187)
North America Personal P&C Insurance [Member] \| Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
North America Personal P&C Insurance [Member] \| Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(119)	(133)	(135)	(187)
Global Reinsurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	(25)	22
Global Reinsurance [Member] \| Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	7	(7)
Global Reinsurance [Member] \| Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	$ 0	(32)	$ 29
North America Commercial P&C Insurance [Member] \| Commercial Excess and Umbrella [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	222		227
North America Commercial P&C Insurance [Member] \| Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	188		113
North America Commercial P&C Insurance [Member] \| Surety Product Line [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			101
North America Commercial P&C Insurance [Member] \| Auto Liability [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			125
North American Personal P&C Insurance [Member] \| Personal Excess Liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	145
North American Personal P&C Insurance [Member] \| homeowners and valuables lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	$ 263		$ 244

Future policy benefits (Rollforward) (Details) - USD ($)
$ in Millions

9 Months Ended

Sep. 30, 2023

Sep. 30, 2022

Dec. 31, 2022

Dec. 31, 2021

Jan. 01, 2021

Liability for Future Policy Benefit, Activity [Line Items]

$ 13,024

$ 4,313

$ 13,685

$ 3,991

Effect of actual variances from expected experience

(734)

(32)

(127)

(139)

12,824

3,820

1,850

9,737

1,435

601

529

267

^[1]

(1,515)

(703)

259

(639)

14,864

13,083

(629)

(686)

14,235

12,397

21,920

10,775

23,052

9,402

Effect of actual variances from expected experience

(770)

(38)

(112)

(144)

22,170

9,220

4,137

13,583

1,436

606

750

420

(1,404)

(704)

(336)

1,072

26,753

22,053

(1,227)

(1,240)

25,526

20,813

12,009

9,151

Net liability for future policy benefits, per consolidated balance sheet

1,100

755

13,109

9,906

10,476

$ 7,652

Less: Reinsurance recoverable on future policy benefits

315

312

Net liability for future policy benefits, after reinsurance recoverable

$ 12,794

$ 9,594

Term Life Insurance | Segment Life [Member]

18 years 8 months 12 days

16 years 2 months 12 days

Liability for Future Policy Benefit, Activity [Line Items]

$ 818

$ 422

879

397

Effect of actual variances from expected experience

35

0

(13)

(31)

901

366

3

445

90

95

45

^[1]

(127)

(93)

9

(46)

903

812

(69)

(59)

834

753

1,427

921

1,555

858

Effect of actual variances from expected experience

31

(5)

(10)

(32)

1,576

821

17

668

90

100

54

52

(119)

(82)

92

112

1,710

1,447

(152)

(126)

1,558

1,321

724

568

Net liability for future policy benefits, per consolidated balance sheet

223

172

947

740

454

Less: Reinsurance recoverable on future policy benefits

111

Net liability for future policy benefits, after reinsurance recoverable

$ 836

$ 629

Whole Life Insurance | Segment Life [Member]

10 years 2 months 12 days

9 years

Liability for Future Policy Benefit, Activity [Line Items]

$ 2,301

$ 1,341

2,354

1,243

Effect of actual variances from expected experience

40

(3)

6

12

2,400

1,252

1,690

1,078

274

155

62

37

^[1]

(375)

(156)

56

(102)

3,995

2,264

(62)

(95)

3,933

2,169

6,048

4,785

6,225

3,833

Effect of actual variances from expected experience

44

(3)

12

14

6,281

3,844

3,659

2,267

276

155

176

123

(212)

(151)

22

207

10,202

6,031

(274)

(308)

9,928

5,723

5,995

3,554

Net liability for future policy benefits, per consolidated balance sheet

707

450

6,702

4,004

3,767

Less: Reinsurance recoverable on future policy benefits

47

56

Net liability for future policy benefits, after reinsurance recoverable

$ 6,655

$ 3,948

Accident and Health Insurance Product Line [Member] | Segment Life [Member]

26 years 6 months

24 years 8 months 12 days

Liability for Future Policy Benefit, Activity [Line Items]

$ 9,863

$ 2,520

10,409

2,323

Effect of actual variances from expected experience

(811)

(29)

(120)

9,478

2,174

145

8,191

1,066

348

421

184

^[1]

(998)

(445)

212

(487)

9,900

9,965

(497)

(531)

9,403

9,434

14,206

4,939

15,022

4,589

Effect of actual variances from expected experience

(848)

(41)

(114)

(126)

14,060

4,422

163

10,542

1,065

348

514

242

(1,065)

(469)

(628)

651

14,109

14,434

(790)

13,319

13,644

3,916

4,210

Net liability for future policy benefits, per consolidated balance sheet

156

125

4,072

4,335

2,569

Less: Reinsurance recoverable on future policy benefits

103

107

Net liability for future policy benefits, after reinsurance recoverable

$ 3,969

$ 4,228

Accident and Health Insurance Product Line [Member] | Overseas General Insurance [Member]

10 years 3 months 18 days

11 years

Liability for Future Policy Benefit, Activity [Line Items]

$ 718

$ 735

Net liability for future policy benefits, per consolidated balance sheet

0

718

735

773

Less: Reinsurance recoverable on future policy benefits

33

38

Net liability for future policy benefits, after reinsurance recoverable

$ 685

$ 697

Insurance, Other | Segment Life [Member]

4 years 10 months 24 days

5 years 1 month 6 days

Liability for Future Policy Benefit, Activity [Line Items]

$ 42

$ 30

43

28

Effect of actual variances from expected experience

2

0

0

45

28

12

23

5

3

1

^[1]

(15)

(9)

(18)

(4)

66

42

(1)

65

41

239

130

250

122

Effect of actual variances from expected experience

3

11

$ 0

253

133

298

106

5

3

6

3

(8)

(2)

178

102

732

141

(11)

(16)

721

125

656

84

Net liability for future policy benefits, per consolidated balance sheet

14

8

670

92

$ 89

Less: Reinsurance recoverable on future policy benefits

21

0

Net liability for future policy benefits, after reinsurance recoverable

$ 649

$ 92

Policyholder Account Balance [Line Items]

15 years 1 month 6 days

13 years 6 months

[1]	Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.

Future policy benefits (Undiscounted & discounted FPB) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Liability for Future Policy Benefit, Activity [Line Items]
Discounted expected future benefit payments	$ 25,526	$ 21,920	$ 20,813	$ 10,775
Term Life Insurance \| Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Undiscounted expected future benefit payments	2,492		2,189
Undiscounted expected future gross premiums	2,884		2,503
Discounted expected future benefit payments	1,558	1,427	1,321	921
Discounted expected future gross premiums	1,910		1,682
Whole Life Insurance \| Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Undiscounted expected future benefit payments	23,457		15,631
Undiscounted expected future gross premiums	9,478		6,654
Discounted expected future benefit payments	9,928	6,048	5,723	4,785
Discounted expected future gross premiums	7,654		5,173
Accident and Health Insurance Product Line [Member] \| Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Undiscounted expected future benefit payments	23,168		23,873
Undiscounted expected future gross premiums	34,055		34,659
Discounted expected future benefit payments	13,319	14,206	13,644	4,939
Discounted expected future gross premiums	20,604		20,193
Insurance, Other \| Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Undiscounted expected future benefit payments	977		265
Undiscounted expected future gross premiums	103		102
Discounted expected future benefit payments	721	$ 239	125	$ 130
Discounted expected future gross premiums	$ 92		$ 92

Future policy benefits (Premiums & interest) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	$ 4,769	$ 3,144
Interest Accretion	221	153
Term Life Insurance \| Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	511	361
Interest Accretion	9	7
Whole Life Insurance \| Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	858	411
Interest Accretion	114	86
Accident and Health Insurance Product Line [Member] \| Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	2,171	1,226
Interest Accretion	93	58
Accident and Health Insurance Product Line [Member] \| Overseas General Insurance [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	1,175	1,075
Interest Accretion	0	0
Insurance, Other \| Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	54	71
Interest Accretion	$ 5	$ 2

Future policy benefits (Weighted average interest rates) (Details) - Segment Life [Member]	Sep. 30, 2023	Sep. 30, 2022
Term Life Insurance
Liability for Future Policy Benefit, Activity [Line Items]
Interest Accretion Rate	2.90%	2.60%
Current Discount Rate	6.00%	6.10%
Whole Life Insurance
Liability for Future Policy Benefit, Activity [Line Items]
Interest Accretion Rate	3.20%	3.90%
Current Discount Rate	4.70%	5.50%
Accident and Health Insurance Product Line [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Interest Accretion Rate	3.70%	3.60%
Current Discount Rate	6.70%	6.10%
Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Interest Accretion Rate	2.60%	3.70%
Current Discount Rate	4.30%	6.20%

Policyholders' account balances (Policyholder Account Balance Rollforward) (Details) - USD ($)
$ in Millions

9 Months Ended

Jul. 01, 2023

Jul. 01, 2022

Sep. 30, 2023

Sep. 30, 2022

Policyholder Account Balance, Beginning Balance

$ 3,140

$ 2,766

Policyholder Account Balance, Consolidation of Huatai Group

$ 4,014

Policyholder Account Balance, Acquisition of Cigna

$ 355

Policyholder Account Balance, Premium Received

503

347

Policyholder Account Balance, Policy Charge

^[1]

(143)

(149)

Policyholder Account Balance, Surrender and Withdrawal

(182)

(94)

Policyholder Account Balance, Benefit Payment

(87)

(18)

Policyholder Account Balance, Interest Expense

82

55

Policyholder Account Balance, Increase (Decrease) from Other Change

(149)

254

Policyholder Account Balance, Ending Balance

7,178

3,008

Universal Life

Policyholder Account Balance [Line Items]

Policyholder Account Balance, Beginning Balance

1,719

1,612

Policyholder Account Balance, Consolidation of Huatai Group

602

Policyholder Account Balance, Acquisition of Cigna

10

Policyholder Account Balance, Premium Received

275

292

Policyholder Account Balance, Policy Charge

^[1]

(135)

(141)

Policyholder Account Balance, Surrender and Withdrawal

(69)

(55)

Policyholder Account Balance, Benefit Payment

(6)

(3)

Policyholder Account Balance, Interest Expense

39

30

Policyholder Account Balance, Increase (Decrease) from Other Change

(42)

69

Policyholder Account Balance, Ending Balance

$ 2,383

$ 1,676

Policyholder Account Balance, Weighted Average Crediting Rate

3.80%

3.70%

Policyholder Account Balance, Net Amount at Risk

^[2]

$ 10,493

$ 10,116

Policyholder Account Balance, Cash Surrender Value

1,596

934

Insurance, Other

Policyholder Account Balance [Line Items]

Policyholder Account Balance, Beginning Balance

1,421

1,154

Policyholder Account Balance, Consolidation of Huatai Group

$ 3,412

Policyholder Account Balance, Acquisition of Cigna

$ 345

Policyholder Account Balance, Premium Received

228

55

Policyholder Account Balance, Policy Charge

^[1]

(8)

Policyholder Account Balance, Surrender and Withdrawal

(113)

(39)

Policyholder Account Balance, Benefit Payment

(81)

(15)

Policyholder Account Balance, Interest Expense

43

25

Policyholder Account Balance, Increase (Decrease) from Other Change

(107)

185

Policyholder Account Balance, Ending Balance

$ 4,795

$ 1,332

Policyholder Account Balance, Weighted Average Crediting Rate

2.10%

2.60%

Policyholder Account Balance, Net Amount at Risk

^[2]

$ 1,675

$ 1,503

Policyholder Account Balance, Cash Surrender Value

$ 3,655

$ 1,280

[1]	Contracts included in the policyholder account balances are generally charged a premium and/or monthly assessments on the basis of the account balance
[2]	For those guarantees of benefits that are payable in the event of death, the net amount at risk is defined as the current guaranteed minimum death benefit in excess of the current account balance at the balance sheet date.

Policyholders' account balances (Guaranteed Minimum Crediting Rates) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	$ 7,178	$ 3,140	$ 3,008	$ 2,766
Universal Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	2,383	1,719	1,676	1,612
Universal Life \| Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	496		490
Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	377		394
Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	614		287
Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	896		505
Insurance, Other
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	4,795	1,421	1,332	$ 1,154
Insurance, Other \| Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,763		717
Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	487		0
Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,746		191
Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	799		424
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Universal Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	622		567
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Universal Life \| Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	3		3
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0		0
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	56		59
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	563		505
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Insurance, Other
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	3,846		1,026
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Insurance, Other \| Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,328		411
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0		0
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,719		191
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 \| Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	799		424
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Universal Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,740		1,078
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Universal Life \| Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	472		456
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	377		394
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	558		228
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	333		$ 0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Insurance, Other
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	626	0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Insurance, Other \| Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	112	0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	487	0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	27	0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 \| Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Universal Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	21	31
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Universal Life \| Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	21	31
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Universal Life \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Insurance, Other
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	323	306
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Insurance, Other \| Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	323	306
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater \| Insurance, Other \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	$ 0	$ 0
Minimum \| Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance, Guaranteed Minimum Crediting Rate	2.01%
Minimum \| Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance, Guaranteed Minimum Crediting Rate	4.00%
Maximum \| Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance, Guaranteed Minimum Crediting Rate	2.00%
Maximum \| Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance, Guaranteed Minimum Crediting Rate	4.00%

Market risk benefits (MRB Roll-Forward) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jan. 01, 2021	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Market Risk Benefit [Line Items]
Market Risk Benefit, Liability, beginning of period				$ 800
Market Risk Benefit, Liability, end of period		$ 770		770
Market risk benefits gains (losses)		(32)	$ 69	(154)	$ 85
Variable Annuity
Market Risk Benefit [Line Items]
Market Risk Benefit, Liability, end of period	$ 1,163
Long-Duration Insurance, Other \| Variable Annuity
Market Risk Benefit [Line Items]
Market Risk Benefit, Liability, beginning of period				800	812
Balance, beginning of period, before effect of changes in the instrument-specific credit risk				776	755
Interest rate changes				(117)	(561)
Effect of changes in equity markets				(69)	633
Effect of changes in volatilities				51	14
Market Risk Benefit, Increase (Decrease) from Future Expected Policyholder Behavior Assumption				89	40
Effect of timing and all other				19	(29)
Balance, end of period, before effect of changes in the instrument-specific credit risk		749	852	749	852
Effect of changes in the instrument-specific credit risk		21	9	21	9
Market Risk Benefit, Liability, end of period		770	861	$ 770	$ 861
Market risk benefit, weighted-average age of policyholders (age)				73 years	73 years
Market Risk Benefit, Net Amount at Risk		2,138	$ 2,885	$ 2,138	$ 2,885
Market Risk Benefits Other Gains (Losses)				$ (181)	$ 186
Long-Duration Insurance, Other \| Variable Annuity \| Measurement Input, Annuitization Rate [Member]
Market Risk Benefit [Line Items]
Market Risk Benefit, Increase (Decrease) from Future Expected Policyholder Behavior Assumption		$ 92

Market Risk Benefits (MRB Valuation) (Details)

9 Months Ended

Sep. 30, 2023

Sep. 30, 2022

Minimum

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Long-Duration Contracts, Assumptions by Product and Guarantee, Lapse Rate

0.50%

Significant Unobservable Inputs Annuitization Rate

0.00%

Maximum

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Long-Duration Contracts, Assumptions by Product and Guarantee, Lapse Rate

30.00%

30.40%

Significant Unobservable Inputs Annuitization Rate

100.00%

Weighted Average

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Long-Duration Contracts, Assumptions by Product and Guarantee, Lapse Rate

^[1]

4.00%

3.80%

Significant Unobservable Inputs Annuitization Rate

^[1]

4.80%

4.60%

[1]	The weighted-average lapse and annuitization rates are determined by weighting each treaty's rates by the MRB contract's fair value.

Separate accounts (Fair Value of Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Separate Account Investment [Line Items]
Separate account assets	$ 5,306	$ 5,190
Separate Account, Cash and Cash Equivalents
Fair Value, Separate Account Investment [Line Items]
Separate account assets	88	141
Separate Account, equity securities and mutual funds
Fair Value, Separate Account Investment [Line Items]
Separate account assets	5,129	4,960
Separate Account, Non-U.S. Government Treasuries
Fair Value, Separate Account Investment [Line Items]
Separate account assets	$ 89	$ 89

Separate accounts (Liabilities) (Details) - USD ($)
$ in Millions

9 Months Ended

Sep. 30, 2023

Sep. 30, 2022

Separate Account, Liability, Surrender and Withdrawal [Abstract]

Separate Account, Liability, Beginning Balance

$ 5,190

$ 5,560

Separate Account, Liability, Premium and Deposit

0

301

724

1,147

Separate Account, Liability, Policy Charge

(103)

(93)

Separate Account, Liability, Surrender and Withdrawal

(407)

(304)

Separate Account, Liability, Benefit Payment

(291)

(289)

Separate Account, Liability, Increase (Decrease) from Invested Performance

382

(978)

Separate Account, Liability, Increase (Decrease) from Other Change

(189)

(453)

Separate Account, Liability, Ending Balance

5,306

4,891

Separate Account, Liability, Cash Surrender Value, Amount

^[1]

$ 5,285

$ 4,771

[1]	Cash surrender value represents the amount of the contract holder's account balances distributable at the balance sheet date less certain surrender charges.

Commitments, Contingencies, And Guarantees (Narrative) (Detail) € in Millions, $ in Millions	Sep. 30, 2023 USD ($)	Sep. 30, 2023 EUR (€)	Dec. 31, 2022 USD ($)
Financial Instruments Owned and Pledged as Collateral [Line Items]
Derivative liability subject to a master netting agreement	$ 97		$ 60
Hedged Liability, Fair Value Hedge	1,600	€ 1,500
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617		1,419
Purchase Commitment, Remaining Minimum Amount Committed	1,075		770
Carrying value of limited partnerships and partially-owned investment companies included in other investments	13,100		12,000
Funding commitments relating to limited partnerships and partially-owned investment companies	6,300		7,400
Unrecognized tax benefits	67
Operating Lease, Right-of-Use Asset	549		607
Operating Lease, Liability	$ 577		$ 633
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities	Other liabilities
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets	Other assets

Commitments, Contingencies, And Guarantees (Balance Sheet Locations, Fair Values In Asset Or (Liability) Position, And Notional Values/Payment Provisions Of Derivative Instruments) (Detail) - USD ($)
$ in Millions

Sep. 30, 2023

Dec. 31, 2022

Foreign currency forward contracts

Options/Futures contracts on notes and bonds

$ 3,711

$ 4,134

2,150

1,511

Convertible securities

Investment And Embedded Derivative Instruments [Member]

^[1]

61

37

95

112

(168)

(139)

Futures contracts on equities

5,922

5,682

Other Derivatives [Member]

^[2]

1,119

939

Other Derivative Instruments [Member]

368

0

Designated as Hedging Instrument

1,487

939

48

17

(68)

53

3,203

3,199

Fair Value Hedging

1,609

1,595

Net Investment Hedging

Other Assets [Member] | Foreign currency forward contracts

1,594

1,604

Other Assets [Member] | Options/Futures contracts on notes and bonds

15

64

Other Assets [Member] | Futures contracts on equities

27

18

Other Assets [Member] | Other Derivatives [Member]

^[2]

48

33

Other Assets [Member] | Other Derivative Instruments [Member]

5

0

Other Assets [Member] | Fair Value Hedging

53

33

Other Assets [Member] | Net Investment Hedging

48

17

Fixed Maturities [Member] | Convertible securities

0

Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Foreign currency forward contracts

^[1]

53

30

Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Options/Futures contracts on notes and bonds

(147)

(115)

Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Futures contracts on equities

(21)

(24)

Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Other Derivatives [Member]

^[2]

0

Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Other Derivative Instruments [Member]

(4)

0

Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Fair Value Hedging

(4)

0

Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Net Investment Hedging

0

Equity Securities | Convertible securities

(68)

(53)

^[1]

$ 0

[1]	Includes fair value of embedded derivatives.
[2]	Related to MRB book of business.

Commitment, Contingencies, And Guarantees (Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financial Instruments Owned and Pledged as Collateral [Line Items]
Interest expense reclassified from OCI	$ 174	$ 150	$ 499	$ 416
Fair Value Hedging
Financial Instruments Owned and Pledged as Collateral [Line Items]
Gain/(loss) recognized in OCI	(17)	(94)	23	(94)
Net realized gain/(loss) reclassified from OCI	(51)	(32)	(20)	(32)
Interest expense reclassified from OCI	(4)	0	(12)	0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ 38	$ (62)	$ 55	$ (62)

Amount of the cost of borrowed funds accounted for as interest expense.

Derivative Instruments, Gain (Loss) [Line Items]

Commitments, Contingencies, And Guarantees (Schedule of Net Investment Hedges, Statements of Financial Performance and Financial Position, Location) (Details) - Net Investment Hedging - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financial Instruments Owned and Pledged as Collateral [Line Items]
Gain/(loss) recognized in OCI	$ (20)	$ 64	$ (8)	$ 64
Interest income reclassified from OCI	3	0	10	0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ (23)	$ 64	$ (18)	$ 64

Commitments, Contingencies, And Guarantees (Net Realized Gains (Losses) Of Derivative Instrument Activity In Consolidated Statement Of Operations) (Detail) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2023

Sep. 30, 2022

Sep. 30, 2023

Sep. 30, 2022

Foreign currency forward contracts

$ 54

$ (163)

$ (178)

$ (1)

Derivative Instruments, Gain (Loss) [Line Items]

All Other Futures Contracts, Options and equities [Member]

(17)

(247)

(95)

(515)

Derivative Instruments, Gain (Loss) [Line Items]

Derivative Instruments, Gain (Loss) [Line Items]

29

49

5

285

Convertible securities

Investment And Embedded Derivative Instruments [Member]

^[1]

(3)

0

(2)

Derivative Instruments, Gain (Loss) [Line Items]

Futures contracts on equities

9

(198)

(92)

(232)

Derivative Instruments, Gain (Loss) [Line Items]

Other Derivatives [Member]

^[2]

52

54

(80)

240

Derivative Instruments, Gain (Loss) [Line Items]

Guaranteed Living Benefit And Other Derivative Instruments [Member]

(7)

(19)

(6)

(9)

Derivative Instruments, Gain (Loss) [Line Items]

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

$ 45

$ 35

$ (86)

$ 231

[1]	Includes embedded derivatives.
[2]	Related to MRB book of business.

Commitments, contingencies, and guarantees Commitments, Contingencies, And Guarantees (Transactions accounted for as secured borrowings) (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	$ 1,469	$ 1,523
Securities lending payable	1,469	1,523
Cash [Member] \| Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	762	820
U.S. Treasury / Agency \| Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	81	72
Foreign [Member] \| Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	555	604
Corporate and asset-backed securities \| Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	47	27
Equity Securities \| Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	18	0
Municipal \| Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	$ 6	$ 0

Commitments, contingencies, and guarantees Commitments, Contingencies, And Guarantees (Collateral pledged under repurchase agreements) (Details) - USD ($)
$ in Millions

Sep. 30, 2023

Dec. 31, 2022

Repurchase agreements (refer to Note 3 for balances associated with VIEs)

$ 2,617

$ 1,419

Asset Pledged as Collateral without Right

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Cash [Member] | Asset Pledged as Collateral without Right

2,753

1,527

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

U.S. Treasury / Agency | Asset Pledged as Collateral without Right

46

12

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Mortgage-backed securities | Asset Pledged as Collateral without Right

103

101

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Repurchase Agreements [Member]

1,466

1,414

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Secured Borrowings, Gross, Difference, Amount

^[1]

136

108

Non-US [Member] | Asset Pledged as Collateral without Right

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Less than 30 Days [Member] | Asset Pledged as Collateral without Right

1,138

0

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Less than 30 Days [Member] | Cash [Member] | Asset Pledged as Collateral without Right

1,188

933

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Less than 30 Days [Member] | U.S. Treasury / Agency | Asset Pledged as Collateral without Right

0

12

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Less than 30 Days [Member] | Mortgage-backed securities | Asset Pledged as Collateral without Right

0

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Less than 30 Days [Member] | Non-US [Member] | Asset Pledged as Collateral without Right

50

921

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity 30 to 90 Days [Member] | Asset Pledged as Collateral without Right

1,138

0

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity 30 to 90 Days [Member] | Cash [Member] | Asset Pledged as Collateral without Right

610

594

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity 30 to 90 Days [Member] | U.S. Treasury / Agency | Asset Pledged as Collateral without Right

0

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity 30 to 90 Days [Member] | Mortgage-backed securities | Asset Pledged as Collateral without Right

103

101

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity 30 to 90 Days [Member] | Non-US [Member] | Asset Pledged as Collateral without Right

507

493

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Greater than 90 Days [Member] | Asset Pledged as Collateral without Right

0

$ 0

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Greater than 90 Days [Member] | Cash [Member] | Asset Pledged as Collateral without Right

955

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Greater than 90 Days [Member] | U.S. Treasury / Agency | Asset Pledged as Collateral without Right

46

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Greater than 90 Days [Member] | Mortgage-backed securities | Asset Pledged as Collateral without Right

0

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]

Maturity Greater than 90 Days [Member] | Non-US [Member] | Asset Pledged as Collateral without Right

909

Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]