MURPHY USA INC., 10-K filed on 2/18/2026
Annual Report
v3.25.4
Cover - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Jan. 31, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-35914    
Entity Registrant Name MURPHY USA INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 46-2279221    
Entity Address, Address Line One 200 Peach Street    
Entity Address, City or Town El Dorado,    
Entity Address, State or Province AR    
Entity Address, Postal Zip Code 71730-5836    
City Area Code 870    
Local Phone Number 875-7600    
Title of 12(b) Security Common Stock, $0.01 Par Value    
Trading Symbol MUSA    
Security Exchange Name NYSE    
Entity Well-Known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Company false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Entity Public Float     $ 7,848,130
Entity Common Stock, Shares Outstanding   18,535,347  
Documents Incorporated by Reference Documents incorporated by reference:
Portions of the Registrant’s definitive Proxy Statement relating to the 2026 Annual Meeting of Stockholders will be incorporated by reference in Part III herein.
    
Amendment Flag false    
Entity Central Index Key 0001573516    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
v3.25.4
Audit Information
 12 Months Ended
Dec. 31, 2025
Audit Information [Abstract]  
Auditor Firm ID 185
Auditor Name KPMG LLP
Auditor Location Dallas, Texas
v3.25.4
Consolidated Balance Sheets - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current assets    
Cash and cash equivalents $ 28.9 $ 47.0
Accounts receivable—trade, less allowance for doubtful accounts of $0.3 in 2025 and 2024, respectively 276.2 268.5
Inventories, at lower of cost or market 413.0 401.6
Prepaid expenses and other current assets 29.7 31.0
Total current assets 747.8 748.1
Property, plant and equipment, at cost less accumulated depreciation and amortization of $2,173.5 in 2025 and $1,931.4 in 2024, respectively 2,962.8 2,813.2
Operating lease right-of-use assets, net 526.3 492.9
Intangible assets, net of amortization 139.3 139.5
Goodwill 328.0 328.0
Other assets 21.6 19.9
Total assets 4,725.8 4,541.6
Current liabilities    
Current maturities of long-term debt 19.0 15.7
Trade accounts payable and accrued liabilities 865.2 874.4
Income taxes payable 44.9 57.8
Total current liabilities 929.1 947.9
Long-term debt, including capitalized lease obligations 2,163.6 1,832.7
Deferred income taxes 388.5 343.4
Asset retirement obligations 52.5 49.1
Non-current operating lease liabilities 534.6 496.3
Deferred credits and other liabilities 34.0 32.1
Total liabilities 4,102.3 3,701.5
Stockholders' Equity    
Preferred Stock, par $0.01, (authorized 20,000,000 shares, none outstanding) 0.0 0.0
Common Stock, par $0.01, (authorized 200,000,000 shares, 46,767,164 shares issued at December 31, 2025 and 2024, respectively) 0.5 0.5
Treasury stock (28,201,581 and 26,750,846 shares held at December 31, 2025 and 2024, respectively) (4,031.7) (3,391.3)
Additional paid in capital (APIC) 482.4 487.5
Retained earnings 4,172.3 3,743.4
Total stockholders' equity 623.5 840.1
Total liabilities and stockholders' equity $ 4,725.8 $ 4,541.6
v3.25.4
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 0.3 $ 0.3
Property, plant and equipment, accumulated depreciation and amortization $ 2,173.5 $ 1,931.4
Stockholders' Equity    
Preferred stock par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock shares authorized (in shares) 20,000,000 20,000,000
Preferred stock shares outstanding (in shares) 0 0
Common stock par value (in dollars per share) $ 0.01 $ 0.01
Common stock shares authorized (in shares) 200,000,000 200,000,000
Common stock shares issued (in shares) 46,767,164 46,767,164
Treasury stock, shares held (in shares) 28,201,581 26,750,846
v3.25.4
Consolidated Statements of Income - USD ($)
shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Revenues      
Total operating revenues $ 19,384.0 $ 20,244.3 $ 21,529.4
Operating Expenses      
Store and other operating expenses 1,108.5 1,064.6 1,014.8
Depreciation and amortization 276.8 248.0 228.7
Impairment of properties 5.3 8.2 0.0
Selling, general and administrative 231.5 235.4 240.5
Restructuring expense 12.6 0.0 0.0
Accretion of asset retirement obligations 3.4 3.2 3.0
Total operating expenses 18,662.7 19,496.9 20,702.6
Gain (loss) on sale of assets (2.8) (4.5) (0.8)
Income (loss) from operations 718.5 742.9 826.0
Other income (expense)      
Investment (income) loss 0.2 6.4 6.9
Interest expense (110.9) (97.1) (98.5)
Other nonoperating income (expense) 1.4 (0.6) 0.0
Total other income (expense) (109.3) (91.3) (91.6)
Income before income taxes 609.2 651.6 734.4
Income tax expense (benefit) 138.6 149.1 177.6
Net Income $ 470.6 $ 502.5 $ 556.8
Basic and Diluted Earnings Per Common Share:      
Basic (in dollars per share) $ 24.38 $ 24.47 $ 25.91
Diluted (in dollars per share) $ 24.10 $ 24.11 $ 25.49
Weighted-average shares outstanding (in thousands):      
Basic (in shares) 19,303 20,533 21,493
Diluted (in shares) 19,526 20,842 21,843
Supplemental information:      
Includes excise taxes $ 2,366.1 $ 2,334.9 $ 2,291.2
Petroleum product sales      
Operating Revenues      
Total operating revenues [1] 14,862.8 15,891.8 17,104.4
Operating Expenses      
Cost of goods sold [1] 13,589.8 14,556.4 15,929.7
Merchandise sales      
Operating Revenues      
Total operating revenues 4,303.8 4,214.8 4,089.3
Operating Expenses      
Cost of goods sold 3,434.8 3,381.1 3,285.9
Other operating revenues      
Operating Revenues      
Total operating revenues $ 217.4 $ 137.7 $ 335.7
[1] Includes excise taxes of $2,366.1 million, $2,334.9 million and $2,291.2 million for the years ended December 31, 2025, 2024 and 2023, respectively.
v3.25.4
Consolidated Statements of Comprehensive Income - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement of Comprehensive Income [Abstract]      
Net income $ 470.6 $ 502.5 $ 556.8
Marketable securities:      
Unrealized gain (loss) 0.0 0.0 0.1
Reclassifications:      
Amortization of unrealized (gain) loss to interest expense 0.0 0.0 0.6
Total 0.0 0.0 0.7
Deferred income tax expense (benefit) 0.0 0.0 0.2
Other comprehensive income (loss) 0.0 0.0 0.5
Comprehensive income $ 470.6 $ 502.5 $ 557.3
v3.25.4
Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Activities      
Net income $ 470.6 $ 502.5 $ 556.8
Adjustments to reconcile net income to net cash provided (required) by operating activities      
Depreciation and amortization 276.8 248.0 228.7
Impairment of properties 5.3 8.2 0.0
Deferred and noncurrent income tax charges (benefits) 45.1 14.0 2.0
Restructuring expense, net of cash paid 5.6 0.0 0.0
Accretion of asset retirement obligations 3.4 3.2 3.0
Amortization of discount on marketable securities 0.0 (0.2) (0.4)
(Gains) losses from sale of assets 2.8 4.5 0.8
Net (increases) decrease in noncash operating working capital (33.1) 32.8 (42.1)
Other operating activities - net 37.4 34.6 35.2
Net cash provided (required) by operating activities 813.9 847.6 784.0
Investing Activities      
Property additions (439.6) (458.1) (335.6)
Proceeds from sale of assets 2.4 2.0 2.4
Investment in marketable securities 0.0 0.0 (12.8)
Redemptions of marketable securities 0.0 11.5 24.0
Other investing activities - net 1.2 (1.2) (1.6)
Net cash provided (required) by investing activities (436.0) (445.8) (323.6)
Financing Activities      
Purchase of treasury stock (649.9) (445.7) (333.2)
Dividends paid (41.5) (36.8) (33.4)
Borrowings of debt 2,982.3 707.0 8.0
Repayments of debt (2,654.4) (666.7) (23.4)
Debt issuance costs (9.0) 0.0 0.0
Amounts related to share-based compensation (23.5) (30.4) (21.1)
Net cash provided (required) by financing activities (396.0) (472.6) (403.1)
Net increase (decrease) in cash, cash equivalents and restricted cash (18.1) (70.8) 57.3
Cash, cash equivalents and restricted cash at January 1 47.0 117.8 60.5
Cash, cash equivalents and restricted cash at December 31 $ 28.9 $ 47.0 $ 117.8
v3.25.4
Consolidated Statements of Changes in Equity - USD ($)
$ in Millions
Total
Common Stock
Treasury Stock
APIC
Retained Earnings
AOCI
Beginning balance (in shares) at Dec. 31, 2022   46,767,164        
Beginning balance at Dec. 31, 2022 $ 640.7 $ 0.5 $ (2,633.3) $ 518.9 $ 2,755.1 $ (0.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 556.8       556.8  
Gain on interest rate hedge and unrealized gain on marketable securities, net of tax 0.5         0.5
Cash dividends declared (33.4)       (33.4)  
Dividend equivalent units accrued 0.0     0.4 (0.4)  
Purchase of treasury stock (336.2)   (336.2)      
Issuance of treasury stock (0.2)   11.7 (11.9)    
Amounts related to share-based compensation (21.1)     (21.1)    
Share-based compensation expense 21.8     21.8    
Ending balance (in shares) at Dec. 31, 2023   46,767,164        
Ending balance at Dec. 31, 2023 828.9 $ 0.5 (2,957.8) 508.1 3,278.1 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 502.5       502.5  
Gain on interest rate hedge and unrealized gain on marketable securities, net of tax 0.0          
Cash dividends declared (36.8)       (36.8)  
Dividend equivalent units accrued 0.0     0.4 (0.4)  
Purchase of treasury stock (446.6)   (446.6)      
Issuance of treasury stock (0.4)   13.1 (13.5)    
Amounts related to share-based compensation (30.4)     (30.4)    
Share-based compensation expense $ 22.9     22.9    
Ending balance (in shares) at Dec. 31, 2024 46,767,164 46,767,164        
Ending balance at Dec. 31, 2024 $ 840.1 $ 0.5 (3,391.3) 487.5 3,743.4 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 470.6       470.6  
Gain on interest rate hedge and unrealized gain on marketable securities, net of tax 0.0          
Cash dividends declared (41.5)       (41.5)  
Dividend equivalent units accrued 0.0     0.2 (0.2)  
Purchase of treasury stock (652.0)   (652.0)      
Issuance of treasury stock 1.2   11.6 (10.4)    
Amounts related to share-based compensation (23.5)     (23.5)    
Share-based compensation expense $ 28.6     28.6    
Ending balance (in shares) at Dec. 31, 2025 46,767,164 46,767,164        
Ending balance at Dec. 31, 2025 $ 623.5 $ 0.5 $ (4,031.7) $ 482.4 $ 4,172.3 $ 0.0
v3.25.4
Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement of Stockholders' Equity [Abstract]      
Dividends declared (in dollars per share) $ 2.15 $ 1.79 $ 1.55
v3.25.4
Description of Business and Basis of Presentation
 12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Description of Business and Basis of Presentation Description of Business and Basis of Presentation
 
The business of Murphy USA Inc. and its subsidiaries (“Murphy USA”, "we", "our", "us", or the “Company”) primarily consists of the U.S. retail marketing business that was separated from its former parent company, Murphy Oil Corporation (“Murphy Oil”), plus other assets, liabilities and operating expenses of Murphy Oil that were associated with supporting the activities of the U.S. retail marketing operations.  Murphy USA was incorporated in March 2013. The separation was approved by the Murphy Oil board of directors on August 7, 2013, and was completed on August 30, 2013 through the distribution of 100% of the outstanding capital stock of Murphy USA to holders of Murphy Oil common stock on the record date of August 21, 2013. Following the separation, Murphy USA is an independent, publicly traded company, and Murphy Oil retains no ownership interest in Murphy USA. On January 29, 2021, the Company acquired 100% of Quick Chek Corporation ("QuickChek" or "QC"), a privately held convenience store chain with a strong regional brand that consisted of 156 stores at the time of acquisition, located in New Jersey and New York, in an all-cash transaction.
 
Murphy USA markets refined products through a network of retail gasoline stores and to unbranded wholesale customers. In addition, we operate non-fuel convenience stores in select markets. The Company owns and operates a chain of retail stores under the brand name of Murphy USA® and Murphy Express, most of which are located in close proximity to Walmart stores, and also has a mix of convenience stores with and without retail gasoline that operate under the brand name of QuickChek®. At December 31, 2025, the Company had a total of 1,800 Company stores in 27 states, of which 1,649 were branded as Murphy and 151 were branded QuickChek. The Company also has certain product supply and wholesale assets, including product distribution terminals and pipeline positions.

Murphy Oil USA, Inc. and certain of its subsidiaries operate on a calendar year basis, while the QuickChek subsidiaries previously used a weekly retail calendar where each quarter had 13 weeks until November 2025, when its period end was aligned with the rest of the Company. For 2025, the QuickChek results cover the period December 28, 2024 to December 31, 2025. For 2024, the QuickChek results cover the period December 30, 2023 to December 27, 2024. The difference in the timing of the period ends is immaterial to the overall consolidated results and all future periods will be aligned.

Adoption of New Accounting Pronouncement

Effective January 1, 2025, the Company adopted ASU 2023-09, Improvements to Income Tax Disclosures, on a prospective basis. This update requires more detailed disclosures in the income tax note, including a standardized tabular rate reconciliation and disaggregated information on income taxes paid by jurisdiction. Since the guidance was adopted prospectively, the disclosures for the years ended December 31, 2024, and 2023, are presented under the previous accounting standard. The adoption of this ASU did not have an impact on the Company's consolidated financial position or results of operations, as it only affects disclosures.
v3.25.4
Significant Accounting Policies
 12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Significant Accounting Policies Significant Accounting Policies
 
PRINCIPLES OF CONSOLIDATION – These consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and include the accounts of Murphy USA Inc. and its subsidiaries for all periods presented. All significant intercompany accounts and transactions within the consolidated financial statements have been eliminated.

REVENUE RECOGNITION – Revenue is recognized when obligations under the terms of a contract with our customers are satisfied; generally, this occurs with the transfer of control of our petroleum products, convenience merchandise, Renewable Identification Numbers ("RINs") and other assets to our third-party customers. Revenue is measured as the amounts of consideration we expect to receive in exchange for transferring goods or providing services. Excise and sales taxes that we collect where we have determined we are the principal in the transaction have been recorded as revenue on a jurisdiction-by-jurisdiction basis.
 
The Company enters into buy/sell and similar arrangements when petroleum products are held at one location but are needed at a different location. The Company often pays or receives funds related to the buy/sell
arrangement based on location or quality differences. The Company accounts for such transactions as non-monetary exchanges under existing accounting guidance and typically reports these on a net basis in its Consolidated Statements of Income. See Note 3 "Revenues" for additional information.
 
SHIPPING AND HANDLING COSTS – Costs incurred for the shipping and handling of motor fuel are included in Petroleum product cost of goods sold in the Consolidated Statements of Income. Costs incurred for the shipping and handling of convenience store merchandise are included in Merchandise cost of goods sold in the Consolidated Statements of Income.
 
TAXES COLLECTED FROM CUSTOMERS AND REMITTED TO GOVERNMENTAL AUTHORITIES – Excise and other taxes collected on sales of refined products and remitted to governmental agencies are included in Operating Revenues and Operating Expenses in the Consolidated Statements of Income. Excise taxes on petroleum products collected and remitted were $2.4 billion in 2025, $2.3 billion in 2024, and $2.3 billion in 2023.

CASH EQUIVALENTS – Short-term investments, which include governmental securities, money market funds and other instruments with governmental securities as collateral, that have a maturity of three months or less from the date of purchase are classified as cash equivalents.
 
MARKETABLE SECURITIES – The Company considers highly liquid treasury notes, corporate debt securities, and other funds with original maturities of more than three months to be marketable securities. Securities with less than one year to maturity are included in short-term marketable securities, and all other securities are classified as long-term marketable securities. Marketable securities are classified as held-to-maturity when the Company has both the positive intent and ability to hold the securities to maturity and are carried at amortized cost. Marketable securities are classified as available-for-sale when the Company does not have the intent to hold securities to maturity to allow flexibility in response to liquidity needs and are carried at fair value. The Company records securities at fair value on its consolidated balance sheets, with unrealized gains and losses reported as a component of accumulated other comprehensive income (loss). See Note 5 "Marketable Securities" and Note 17 "Assets and Liabilities Measured at Fair Value" for additional information on our policy and the fair value measurement of the Company's marketable securities.

ACCOUNTS RECEIVABLE – The Company’s accounts receivable are recorded at the invoiced amount and do not bear interest. The accounts receivable primarily consists of amounts owed to the Company from credit card companies and by customers for wholesale sales of refined petroleum products. The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses on these receivables. The Company reviews this allowance for adequacy at least quarterly and bases its assessment on a combination of current information about its customers and historical write-off experience. Any trade accounts receivable balances written off are charged against the allowance for doubtful accounts. The Company has not experienced any significant credit-related losses in the past three years.
 
INVENTORIES – Inventories of petroleum products are valued at the lower of cost, generally applied on a last-in, first-out (“LIFO”) basis, or market. Any increments to LIFO inventory volumes are valued based on the first purchase price for these volumes during the year. Merchandise inventories held for resale are generally valued at average cost. Materials and supplies are valued at the lower of average cost or net realizable value.
 
VENDOR ALLOWANCES AND REBATES – Murphy USA receives payments for vendor allowances, volume rebates and other related payments from various suppliers of its convenience store merchandise. Vendor allowances for price markdowns are credited to merchandise cost of goods sold during the period the related markdown is recognized. Volume rebates of merchandise are recorded as reductions to merchandise cost of goods sold when the merchandise qualifying for the rebate is sold. Slotting and stocking allowances received from a vendor are recorded as a reduction to cost of sales over the period covered by the agreement.

BUSINESS COMBINATIONS – The Company accounts for business combinations under the purchase method of accounting. The purchase price of an acquisition is measured as the aggregate of the fair value of the consideration transferred. The purchase price is allocated to the fair values of the tangible and intangible assets acquired and liabilities assumed, with any excess recorded as goodwill. These fair value determinations
require judgment and may involve the use of significant estimates and assumptions. The purchase price allocation may be provisional during a measurement period of up to one year to provide reasonable time to obtain the information necessary to identify and measure the assets acquired and liabilities assumed. Any such measurement period adjustments are recognized in the period in which the adjustment amount is determined. Transaction costs associated with the acquisition are expensed as incurred.

PROPERTY, PLANT AND EQUIPMENT – Additions to property, plant and equipment, including renewals and betterments, are capitalized and recorded at cost. Certain marketing facilities are primarily depreciated using the composite straight-line method with depreciable lives ranging from 3 to 25 years. Gasoline stores, improvements to gasoline stores and other assets are depreciated over 3 to 50 years by individual unit on the straight-line method. The Company capitalizes interest costs as a component of construction in progress on individually significant projects based on the weighted-average interest rates incurred on its long-term borrowings. Total interest cost capitalized was $4.4 million in 2025, $4.2 million in 2024 and $2.4 million in 2023.

The Company has undertaken like-kind exchange ("LKE") transactions under the federal tax code in an effort to acquire and sell real property in a tax-efficient manner. The Company generally enters into forward transactions, in which property is sold and the proceeds are reinvested by acquiring similar property; and reverse transactions, in which property is acquired and similar property is subsequently sold. A qualified LKE intermediary is used to facilitate these LKE transactions. Proceeds from forward LKE transactions are held by the intermediary and are classified as restricted cash on the Company's balance sheet because the funds must be reinvested in similar properties. If the acquisition of suitable LKE properties is not completed within 180 days of the sale of the Company-owned property, the proceeds are distributed to the Company by the intermediary and are reclassified as available cash and applicable income taxes are determined. An exchange accommodation titleholder, a type of variable interest entity, is used to facilitate reverse like-kind exchanges. The acquired assets are held by the exchange accommodation titleholder until the exchange transactions are complete. If the Company determines that it is the primary beneficiary of the exchange accommodation titleholder, the replacement assets held by the exchange accommodation titleholder are consolidated and recorded in Property, Plant and Equipment on the Consolidated Balance Sheets. The unspent proceeds that are held in trust with the intermediary are recorded as noncurrent assets in the Consolidated Balance Sheet as the cash was restricted for the acquisition of similar properties. At December 31, 2025 and 2024, the Company had no open LKE transactions with an intermediary.

GOODWILL AND INTANGIBLE ASSETS – Goodwill represents the excess of the aggregate of the consideration transferred over the net assets acquired and liabilities assumed and is tested annually for impairment, or more frequently if there are indicators of potential impairment. Acquired finite-lived intangible assets are amortized on a straight-line basis over their estimated useful lives, and are reviewed for impairment when events or circumstances indicate that the asset group to which the intangible assets belong might be impaired. The Company revises the estimated remaining useful life of these assets when events or changes in circumstances warrant a revision. If the Company revises the useful life, the unamortized balance is amortized over the useful life on a prospective basis. See Note 7 "Goodwill and Intangible Assets" for additional information.
IMPAIRMENT OF ASSETS – Long-lived assets, which include property and equipment and finite-lived assets, are tested for recoverability whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. Indefinite-lived intangible assets are tested annually. A long-lived asset is not recoverable if its carrying amount exceeds the sum of the undiscounted cash flows expected to result from its use and eventual disposition. If a long-lived asset is not recoverable, an impairment loss is recognized for the amount by which the carrying amount of the long-lived asset exceeds its fair value, with fair value determined based on discounted estimated net cash flows or other appropriate methods. In 2025, the Company recognized impairment charges of $5.3 million, $8.2 million in 2024, and no impairment charges in 2023.
ASSET RETIREMENT OBLIGATIONS – The Company records a liability for asset retirement obligations (“ARO”) equal to the fair value of the estimated cost to retire an asset. The ARO liability is initially recorded in the period in which the obligation meets the definition of a liability, which is generally when the asset is placed in service. The ARO liability is estimated using existing regulatory requirements and anticipated future inflation
rates. When the liability is initially recorded, the Company increases the carrying amount of the related long-lived asset by an amount equal to the original liability. The liability is increased over time to reflect the change in its present value, and the capitalized cost is depreciated over the useful life of the related long-lived asset. The Company reevaluates the adequacy of its recorded ARO liability at least annually. Actual costs of asset retirements such as dismantling service stores and site restoration are charged against the related liability. Any difference between costs incurred upon settlement of an asset retirement obligation and the recorded liability is recognized as a gain or loss in the Company’s Consolidated Statements of Income.
ENVIRONMENTAL LIABILITIES – A liability for environmental matters is established when it is probable that an environmental obligation exists and the cost can be reasonably estimated. If there is a range of reasonably estimated costs, the most likely amount will be recorded, or if no amount is most likely, the minimum of the range is used. Related expenditures are charged against the liability. Environmental remediation liabilities have not been discounted for the time value of future expected payments. Environmental expenditures that have future economic benefit are capitalized.
INCOME TAXES – The Company accounts for income taxes using the asset and liability method. Under this method, income taxes are provided for amounts currently payable and for amounts deferred as tax assets and liabilities based on differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities. Deferred income taxes are measured using the enacted tax rates that are assumed will be in effect when the differences reverse. The Company routinely assesses the realizability of deferred tax assets based on available positive and negative evidence including assumptions of future taxable income, tax planning strategies and other pertinent factors.  A deferred tax asset valuation allowance is recorded when evidence indicates that it is more likely than not that all or a portion of these deferred tax assets will not be realized in a future period.  The accounting principles for income tax uncertainties permit recognition of income tax benefits only when they are more likely than not to be realized.  
The Company has elected to classify any interest expense and penalties related to the underpayment of income taxes in Income tax expense in the Consolidated Statements of Income.
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES – The fair value of a derivative instrument is recognized as an asset or liability in the Company’s Consolidated Balance Sheets. Upon entering into a derivative contract, the Company may designate the derivative as either a fair value hedge or a cash flow hedge, or decide that the contract is not a hedge, and therefore, recognize changes in the fair value of the contract in earnings. The Company documents the relationship between the derivative instrument designated as a hedge and the hedged items as well as its objective for risk management and strategy for use of the hedging instrument to manage the risk. Derivative instruments designated as fair value or cash flow hedges are linked to specific assets and liabilities or to specific firm commitments or forecasted transactions. The Company assesses at inception and on an ongoing basis whether a derivative instrument accounted for as a hedge is highly effective in offsetting changes in the fair value or cash flows of the hedged item. A derivative that is not a highly effective hedge does not qualify for hedge accounting. The change in the fair value of a qualifying fair value hedge is recorded in earnings along with the gain or loss on the hedged item. The effective portion of the change in the fair value of a qualifying cash flow hedge is recorded in Accumulated other comprehensive income (AOCI) in the Consolidated Balance Sheets until the hedged item is recognized currently in earnings. If a derivative instrument no longer qualifies as a cash flow hedge and the underlying forecasted transaction is no longer probable of occurring, hedge accounting is discontinued and the gain or loss recorded in AOCI is recognized immediately in earnings. If a hedge is de-designated, hedge accounting will no longer apply and from that time the gain and losses will be recognized in earnings and any accumulated amounts in other comprehensive income will be amortized to earnings over the remaining life of the underlying instrument. See Note 14 "Financial Instruments and Risk Management" and Note 17 "Assets and Liabilities Measured at Fair Value" for further information about the Company’s derivatives.
STOCK-BASED COMPENSATION – The fair value of awarded stock options, restricted stock, restricted stock units and performance stock units is determined based on a combination of management assumptions for awards issued. The Company uses the Black-Scholes option pricing model for computing the fair value of stock options. The primary assumptions made by management included the expected life of the stock option award and the expected volatility of the Company’s common stock prices. The Company uses both historical data and current information to support its assumptions. Stock option expense is recognized on a straight-line basis over
the requisite service period of three years. The Company uses a Monte Carlo valuation model to determine the fair value of performance-based stock units that are based on performance compared against a peer group and the related expense is recognized over the three-year requisite service period. Management estimates the number of all awards that will not vest and adjusts its compensation expense accordingly. Differences between estimated and actual vested amounts are accounted for as an adjustment to expense when known. See Note 12 "Incentive Plans" for a discussion of the basis of allocation of such costs.
USE OF ESTIMATES – In preparing the financial statements of the Company in conformity with U.S. GAAP, management has made a number of estimates and assumptions related to the reporting of assets, liabilities, revenues, and expenses and the disclosure of contingent assets and liabilities. Actual results may differ from the estimates. On an ongoing basis, we review our estimates based on currently available information. Changes in facts and circumstances may result in revised estimates.
v3.25.4
Revenues
 12 Months Ended
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]  
Revenues Revenues
Revenue Recognition

The following table disaggregates our revenue by major source for the years ended December 31, 2025, 2024, and 2023.
Years Ended December 31,
(Millions of dollars)202520242023
Marketing Segment
Petroleum product sales (at retail)1
$13,397.7 $14,417.5 $15,279.9 
Petroleum product sales (at wholesale)1
1,465.1 1,474.3 1,824.5 
Total petroleum product sales14,862.8 15,891.8 17,104.4 
Merchandise sales4,303.8 4,214.8 4,089.3 
Other operating revenues:
RINs211.7 129.6 328.6 
Other revenues2
5.2 7.5 6.6 
Total Marketing segment revenues19,383.5 20,243.7 21,528.9 
Corporate and Other Assets 0.5 0.6 0.5 
Total revenues$19,384.0 $20,244.3 $21,529.4 
1Includes excise and sales taxes that remain eligible for inclusion under Topic 606
2Primarily includes collection allowance on excise and sales taxes combined with other miscellaneous items


Marketing segment

Petroleum product sales (at retail). For our retail store locations, the revenue related to petroleum product sales is recognized as the fuel is pumped to our customers. The transaction price at the pump typically includes some portion of sales or excise taxes as levied in the respective jurisdictions. Those taxes that are collected for remittance to governmental entities on a pass-through basis are not recognized as revenue and they are recorded to a liability account until they are paid. Our customers typically use a mixture of cash, checks, credit cards and debit cards to pay for our products as they are received. We have accounts receivable from the various credit/debit card providers at any point in time related to product sales made on credit cards and debit cards. These receivables are typically collected in two to seven days, depending on the terms with the particular credit/debit card providers. Payment fees retained by the credit/debit card providers are recorded as Store and other operating expenses in the Consolidated Statements of Income.

Petroleum product sales (at wholesale). Our sales of petroleum products at wholesale are generally recorded as revenue when the deliveries have occurred and legal ownership of the product has transferred to the customer. Title transfer for bulk refined product sales typically occurs at pipeline custody points and upon
trucks loading at product terminals. For bulk pipeline sales, we record receivables from customers that are generally collected within a week from custody transfer date. For our rack product sales, the majority of our customers' accounts are drafted by us within 10 days from product transfer.

Merchandise sales. For our retail store locations, the revenue related to merchandise sales is recognized as the customer completes their purchase at our locations. The transaction price typically includes some portion of sales tax as levied in the respective jurisdictions. Those taxes that are collected for remittance to governmental entities on a pass-through basis are not recognized as revenue and they are recorded to a liability account until they are paid. As noted above, a mixture of payment types are used for these revenues and the same terms for credit/debit card receivables are realized.

With respect to merchandise sales revenue we must determine whether we are the principal or agent for some categories of merchandise such as scratch-off lottery tickets, lotto tickets, newspapers and other small categories of merchandise. For scratch-off lottery tickets, we have determined we are the principal in the majority of the jurisdictions and therefore we record those sales on a gross basis. We have some categories of merchandise (such as lotto tickets) where we are the agent and the revenues recorded for those transactions are our net commission only.

The Company offers loyalty programs through each of its branded retail locations. The customers earn rewards based on their spending or other promotional activities. These programs create a performance obligation which requires us to defer a portion of sales revenue to the loyalty program participants until they redeem their rewards. The rewards may be redeemed for free or discounted merchandise or cash discounts at all stores and on fuel purchases at Murphy branded stores. Earned rewards expire after an account is inactive for a period of 90 days at Murphy branded stores, while certain QC rewards require use within the month. We recognize loyalty revenue when a customer redeems an earned reward. Deferred revenue associated with both loyalty programs are included in Trade accounts payable and accrued liabilities in our Consolidated Balance Sheets. The deferred revenue balances at December 31, 2025 and 2024 were immaterial.

RINs sales. For the sale of RINs, we recognize revenue when the RIN is transferred to the counter-party and the sale is completed. Receivables from our counter-parties related to the RIN sales are typically collected within five days of the sale.

Other revenues. Items reported as other operating revenues include collection allowances for excise and sales taxes and other miscellaneous items and are recognized as revenue when the transaction is completed.

Accounts receivable
Trade accounts receivable on the Consolidated Balance Sheet represents both receivables related to contracts with customers and other trade receivables. At December 31, 2025 and 2024, we had $115.0 million and $110.5 million of receivables, respectively, related to contracts with customers recorded. Typically, the trade accounts receivable related to contracts with customers outstanding at the end of each period were collected during the succeeding quarter. These receivables were generally related to credit and debit card transactions along with short term bulk and wholesale sales to our customers, which have a very short settlement window.
v3.25.4
Inventories
 12 Months Ended
Dec. 31, 2025
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
December 31,
(Millions of dollars)20252024
Petroleum products - FIFO basis$305.8 $353.3 
Store merchandise for resale - FIFO basis 254.7 226.5 
Less LIFO reserve (162.6)(189.1)
Total petroleum products and store merchandise inventory397.9 390.7 
Materials and supplies15.1 10.9 
Total inventories$413.0 $401.6 
 
At December 31, 2025 and 2024, the replacement cost (market value) of LIFO inventories exceeded the LIFO carrying value for petroleum products by $162.6 million and $189.1 million, respectively.
v3.25.4
Marketable Securities
 12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities Marketable Securities
The Company invests a portion of its excess operational cash in marketable securities. The goal of the Company's investment policy, in order of priority, are as follows: (1) preservation of principal, (2) maintaining a high degree of liquidity to meet cash flow requirements, and (3) deliver competitive returns subject to prevailing market conditions and the Company's stated objectives related to safety and liquidity. Nothing in the policy is intended to indicate that management must invest excess operational cash; it merely allows it subject to specific limitations.

Securities are generally required to have a final maturity of 24 months or less with a weighted-average maturity for the portfolio of no longer than 12 months and must have an active secondary market. Investments may include U.S. Treasury bills, notes and bonds, U.S. Agency securities, repurchase agreements, certificates of deposit, institutional, government money market funds that maintain a stable $1.00 net asset value, domestic and foreign commercial paper, municipal securities, domestic and foreign debt issued by corporations or financial institutions with the primary objective of minimizing the potential risk of principal loss. The Company determines the classification of its marketable securities based on its investment strategy at the time of purchase.

The Company held no marketable securities at December 31, 2025 or 2024.
v3.25.4
Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
  December 31, 2025December 31, 2024
(Millions of dollars)Estimated Useful LifeCostNetCostNet
Land $709.4 $709.4 $674.6 $674.6 
Real estate finance leases
1 to 40 years
155.0 93.0 150.9 100.8 
Pipeline and terminal facilities
3 to 25 years
105.9 59.8 99.2 57.1 
Retail gasoline stores
3 to 50 years
3,823.4 1,953.9 3,498.7 1,826.3 
Buildings
20 to 45 years
75.7 40.6 75.4 43.8 
Other
3 to 20 years
266.9 106.1 245.8 110.6 
  $5,136.3 $2,962.8 $4,744.6 $2,813.2 
Depreciation expense of $275.8 million, $247.0 million and $227.7 million was recorded for the years ended December 31, 2025, 2024 and 2023, respectively.
v3.25.4
Goodwill and Intangible Assets
 12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
The Company's goodwill is assigned to its Marketing segment and none of the goodwill is deductible for tax purposes.

December 31,
(Millions of dollars)20252024
Goodwill$328.0 $328.0 

We amortize intangible assets subject to amortization on a straight-line basis based on the period for which the economic benefits of the asset or liability are expected to be realized. The intangible assets subject to amortization includes pipeline space, which is being amortized over a 40-year life, and the intangible lease liability acquired from QuickChek which is being amortized over the remaining life of the underlying leases.

Intangible assets subject to amortization at December 31, 2025 and 2024 consisted of the following:

Remaining Useful Life (in years)December 31, 2025December 31, 2024
(Millions of dollars)CostNetCostNet
Intangible assets subject to amortization:
Pipeline space29.7$39.6 $29.7 $39.6 $30.7 
Intangible lease liability8.6(9.1)(5.8)(9.1)(6.6)
Total intangible assets subject to amortization30.5 23.9 30.5 24.1 
Intangible assets not subject to amortization, indefinite lives:
Trade name115.4 115.4 115.4 115.4 
Intangible assets, net of amortization$145.9 $139.3 $145.9 $139.5 
v3.25.4
Accounts Payable and Accrued Liabilities
 12 Months Ended
Dec. 31, 2025
Payables and Accruals [Abstract]  
Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities
Trade accounts payable and accrued liabilities consisted of the following:
 December 31,
(Millions of dollars)20252024
Trade accounts payable$477.5 $518.0 
Excise taxes/withholdings payable106.1 99.7 
Accrued insurance obligations68.3 59.7 
Accrued taxes other than income49.7 43.2 
Accrued compensation and benefits58.5 39.9 
Accrued capital expenditures38.5 55.1 
Current operating lease liabilities25.8 23.7 
Other40.8 35.1 
Accounts payable and accrued liabilities$865.2 $874.4 
v3.25.4
Long-Term Debt
 12 Months Ended
Dec. 31, 2025
Debt Disclosure [Abstract]  
Long-Term Debt Long-Term Debt
Long-term debt consisted of the following:
 December 31,
(Millions of dollars)20252024
5.625% senior notes due 2027 (net of unamortized discount of $0.5 at 2025 and $0.9 at 2024)
$299.5 $299.1 
4.75% senior notes due 2029 (net of unamortized discount of $2.3 at 2025 and $3.0 at 2024)
497.7 497.0 
3.75% senior notes due 2031 (net of unamortized discount of $3.2 at 2025 and $3.8 at 2024)
496.8 496.2 
Term loan due 2028 (effective interest rate of n/a at 2025 and 6.44% at 2024)
— 385.6 
Term loan due 2032 (effective interest rate of 5.61% at 2025) net of unamortized discount of $1.0 at 2025
599.0 — 
Revolving credit facility, due 2030 (weighted-average interest rate of 5.88% at December 31, 2025)
183.0 56.0 
Capitalized lease obligations, autos and equipment, due through 2030
7.7 3.2 
Capitalized lease obligations, buildings, due through 2059
110.8 116.5 
Unamortized debt issuance costs(11.9)(5.2)
Total long-term debt2,182.6 1,848.4 
Less current maturities19.0 15.7 
Total long-term debt, net of current$2,163.6 $1,832.7 
 
Senior Notes

On April 25, 2017, Murphy Oil USA, Inc. ("MOUSA"), our primary operating subsidiary, issued $300 million of 5.625% Senior Notes due 2027 (the "2027 Senior Notes") under its existing shelf registration statement. The 2027 Senior Notes are fully and unconditionally guaranteed by the Company and by the Company's subsidiaries that guarantee our Credit Facilities (as defined below). The indenture governing the 2027 Senior Notes contains restrictive covenants that limit, among other things, the ability of the Company, MOUSA, and the restricted subsidiaries to incur additional indebtedness or liens, dispose of assets, make certain restricted payments or investments, enter into transactions with affiliates or merge with or into other entities.

On September 13, 2019, MOUSA issued $500 million of 4.75% Senior Notes due 2029 (the “2029 Senior Notes”). The net proceeds from the issuance of the 2029 Senior Notes were used to fund, in part, the tender offer and redemption of a prior note issuance. The 2029 Senior Notes are fully and unconditionally guaranteed by the Company and by the Company's subsidiaries that guarantee our Credit Facilities. The indenture governing the 2029 Senior Notes contains restrictive covenants that are essentially identical to the covenants for the 2027 Senior Notes.

On January 29, 2021, MOUSA issued $500 million of 3.75% Senior Notes due 2031 (the "2031 Senior Notes" and, together with the 2027 Senior Notes and the 2029 Senior Notes, the "Senior Notes"). The net proceeds from the issuance of the 2031 Senior Notes were used, in part, to fund the acquisition of QuickChek and other obligations related to that transaction. The 2031 Senior Notes are fully and unconditionally guaranteed by the Company and by the Company's subsidiaries that guarantee our Credit Facilities. The indenture governing the 2031 Senior Notes contains restrictive covenants that are essentially identical to the covenants for the 2027 and 2029 Senior Notes.
The Senior Notes and related guarantees rank equally with all of our and the guarantors’ existing and future senior unsecured indebtedness and effectively junior to our and the guarantors’ existing and future secured indebtedness (including indebtedness with respect to the Credit Facilities) to the extent of the value of the assets securing such indebtedness.  The Senior Notes are structurally subordinated to all of the existing and future third-party liabilities, including trade payables, of our existing and future subsidiaries that do not guarantee the notes.
 
Revolving Credit Facility and Term Loan

Our credit agreement consists of both a cash flow revolving credit facility and a senior secured term loan.

Following a refinancing effective as of April 7, 2025, the credit agreement provides for a senior secured term loan in an aggregate principal amount of $600.0 million (the “Term Facility”) (which was borrowed in full on April 7, 2025) and revolving credit commitments in an aggregate amount equal to $750 million (the “Revolving Facility”, and together with the Term Facility, the “Credit Facilities”). The term loan is due April 2032, and we are required to make quarterly principal payments of $1.5 million, which began on January 1, 2026. The outstanding balance of the term loan was $600.0 million at December 31, 2025 and at December 31, 2024, prior to the refinancing, the outstanding balance of the term loan was $386.0 million. As of December 31, 2025, we had $183.0 million of outstanding borrowings under the Revolving Facility and $6.2 million of outstanding letters of credit (which reduces the amount available to borrow under the Revolving Facility).

The Term Facility amortizes in quarterly installments, which commenced on January 1, 2026, at a rate of 1.00% per annum. Pursuant to the credit agreement, the applicable margin, (A) in the case of Adjusted SOFR Rate borrowings, (i) with respect to the Revolving Facility, ranges from 1.25% to 2.00% per annum depending on a total debt to EBITDA ratio and (ii) with respect to the Term Facility, is 1.75% per annum and (B) in the case of Alternate Base Rate borrowings (i) with respect to the Revolving Facility, ranges from 0.25% to 1.00% per annum depending on a total debt to EBITDA ratio or (ii) with respect to the Term Facility, is 0.75% per annum.

The credit agreement contains certain covenants that limit, among other things, the ability of the Company and certain of its subsidiaries to incur additional indebtedness or liens, to make certain investments, to enter into sale-leaseback transactions, to make certain restricted payments, to enter into consolidations, mergers or sales of material assets and other fundamental changes, to transact with affiliates, to enter into agreements restricting the ability of subsidiaries to incur liens or pay dividends, or to make certain accounting changes. The Revolving Facility credit agreement also imposes total leverage ratio and secured net leverage ratio financial maintenance covenants which are tested quarterly. Pursuant to the total leverage ratio financial maintenance covenant, the Company must maintain a total leverage ratio of not more than 5.0 to 1.0 with an ability in certain circumstances to temporarily increase that limit to 5.5 to 1.0 and a consolidated cash interest coverage ratio of not less than 2.50 to 1.0. The credit agreement also contains customary events of default.

Pursuant to the credit agreement's covenant limiting certain restricted payments, certain payments in respect of our equity interests, including dividends, when the total leverage ratio, calculated on a pro forma basis, is greater than 3.0 to 1.0, could be limited. At December 31, 2025, our total leverage ratio was 2.11 to 1.0 which meant our ability at that date to make restricted payments was not limited. If our total leverage ratio, on a pro forma basis, exceeds 3.0 to 1.0, any restricted payments made following that time until the ratio is once again, on a pro forma basis, below 3.0 to 1.0 would be limited by the covenant, which contains certain exceptions, including an ability to make restricted payments in cash in an aggregate amount not to exceed the greater of (a) $400.0 million, or (b) 15.0% of consolidated net tangible assets, estimated at $424.3 million as of December 31, 2025, over the life of the credit agreement.

All obligations under the credit agreement are guaranteed by Murphy USA and the subsidiary guarantors party thereto, and all obligations under the credit agreement, including the guarantees of those obligations, are secured by certain assets of Murphy USA, Murphy Oil USA, Inc. and the guarantors party to the guarantee and collateral agreement in respect thereof.
v3.25.4
Asset Retirement Obligations
 12 Months Ended
Dec. 31, 2025
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations Asset Retirement Obligations
The majority of the ARO recognized by the Company at December 31, 2025 and 2024 is related to the estimated costs to dismantle and abandon certain of its retail gasoline stores. The Company has not recorded an ARO for certain of its marketing assets because sufficient information is presently not available to estimate a range of potential settlement dates for the obligation. These assets are consistently being upgraded and are expected to be operational into the foreseeable future. In these cases, the obligation will be initially recognized in the period in which sufficient information exists to estimate the obligation.

A reconciliation of the beginning and ending aggregate carrying amount of the ARO is shown in the following table:
 December 31,
(Millions of dollars)20252024
Balance at beginning of period$49.1 $46.1 
Accretion expense3.4 3.2 
Settlement of liabilities(1.0)(3.1)
Liabilities incurred1.0 2.9 
Balance at end of period$52.5 $49.1 

The estimation of future ARO is based on a number of assumptions requiring professional judgment. The Company cannot predict the type of revisions to these assumptions that may be required in future periods due to the lack of availability of additional information.
v3.25.4
Income Taxes
 12 Months Ended
Dec. 31, 2025
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The components of income (loss) before income taxes for each of the three years ended December 31, 2025 and income tax expense (benefit) attributable thereto are as follows:

 Years Ended December 31,
(Millions of dollars)202520242023
Income (loss) before income taxes$609.2 $651.6 $734.4 
Income tax expense (benefit)   
Federal - Current$70.1 $115.5 $141.5 
Federal - Deferred48.4 11.8 3.5 
State - Current and deferred20.1 21.8 32.6 
Total income tax expense (benefit)$138.6 $149.1 $177.6 

The following table reconciles the Company income tax expense (benefit) based on the U.S. statutory tax rate to the income tax expense (benefit) for the year ended December 31, 2025, after the adoption of ASU 2023-09.

(Millions of dollars)AmountPercent
Income tax expense (benefit) based on the U.S. statutory tax rate$127.9 21.0 %
Domestic federal
Tax Credits(8.0)(1.3)%
Nontaxable and nondeductible items2.0 0.3 %
Other reconciling items0.2 — %
Domestic state and local income taxes, net of federal effect16.5 2.8 %
Total income tax expense (benefit)$138.6 22.8 %
In 2025, state and local income taxes in New Jersey, Florida, Alabama, Georgia and Tennessee comprised the majority of the domestic state and local income taxes, net of federal effect category.

The following table reconciles income taxes based on the U.S. statutory tax rate to the Company’s income tax expense (benefit) for the years ended December 31, 2024 and 2023, prior to the adoption of ASU 2023-09.

 Years Ended December 31,
(Millions of dollars)20242023
Income tax expense based on the U.S. statutory tax rate$136.8 $154.2 
State income taxes, net of federal benefit17.3 25.0 
Federal credits(2.5)(2.6)
Other, net(2.5)1.0 
Total$149.1 $177.6 
Cash income taxes paid, net of refunds, for the year ended December, 31, 2025, was as follows:

(Millions of dollars)Amount
US federal$86.0 
US state and local15.0 
Total$101.0 

Cash income taxes paid, net of refunds, were $109.5 million and $128.0 million for the years ended December 31, 2024 and 2023, respectively.
An analysis of the Company’s deferred tax assets and deferred tax liabilities at December 31, 2025 and 2024 showing the tax effects of significant temporary differences is as follows:

 December 31,
(Millions of dollars)20252024
Deferred tax assets  
Property costs and asset retirement obligations$8.1 $7.3 
Employee benefits12.4 11.7 
Operating leases liability117.7 109.2 
Other deferred tax assets15.0 15.9 
Total gross deferred tax assets153.2 144.1 
Deferred tax liabilities  
Accumulated depreciation and amortization(383.0)(344.5)
State deferred taxes(28.6)(31.2)
Operating leases right-of-use assets(110.5)(103.5)
Other deferred tax liabilities(19.6)(8.3)
Total gross deferred tax liabilities(541.7)(487.5)
Net deferred tax liabilities$(388.5)$(343.4)

In management’s judgment, the deferred tax assets in the preceding table will more likely than not be realized as reductions of future taxable income or utilized by available tax planning strategies.

As of December 31, 2025, the earliest year remaining open for federal audits and/or settlement is 2022 and for state audits and/or settlement is 2020. Although the Company believes that recorded liabilities for unsettled issues are adequate, additional gains or losses could occur in future periods from resolution of outstanding unsettled matters.
The FASB’s rules for accounting for income tax uncertainties clarify the criteria for recognizing uncertain income tax benefits and require additional disclosures about uncertain tax positions.  Under U.S. GAAP the financial statement recognition of the benefit for a tax position is dependent upon the benefit being more likely than not to be sustainable upon audit by the applicable taxing authority. If this threshold is met, the tax benefit is then measured and recognized at the largest amount that is greater than 50 percent likely of being realized upon ultimate settlement. Liabilities associated with uncertain income tax positions are included in Deferred Credits and Other Liabilities in the Consolidated Balance Sheets. 

A reconciliation of the beginning and ending amount of the consolidated liability for unrecognized income tax benefits during the year ended December 31, 2025 and 2024 is shown in the following table:

 Years Ended December 31,
(Millions of dollars)20252024
Balance at January 1$— $0.5 
Additions for tax positions related to prior years— — 
Expiration of statutes of limitation— (0.5)
Balance at December 31$— $— 

All additions or reductions to the above liability affect the Company’s effective tax rate in the respective period of change.  The Company accounts for any applicable interest and penalties on uncertain tax positions as a component of income tax expense.  Income tax expense for the years ended December 31, 2025, 2024 and 2023 included immaterial amounts of interest and penalties, associated with uncertain tax positions.  Of these amounts shown in the table, there were no unrecognized tax benefits that, if recognized, would impact our effective tax rate for the years ended December 31, 2025 and 2024, respectively.
Total excess tax benefits for equity compensation recognized in the twelve months ended December 31, 2025, 2024 and 2023 were $2.9 million, $5.0 million and $2.9 million, respectively.
v3.25.4
Incentive Plans
 12 Months Ended
Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Incentive Plans Incentive Plans
Equity Awards

The Murphy USA 2013 Long-Term Incentive Plan (the "MUSA 2013 Plan") authorized the Executive Compensation Committee of our Board of Directors (“the Committee”) to grant non-qualified or incentive stock options, stock appreciation rights, stock awards (including restricted stock and restricted stock unit awards), dividend equivalent units, cash awards, and performance awards to our employees. No more than 5.5 million shares of MUSA common stock may be delivered under the MUSA 2013 Plan and no more than 1 million shares of common stock may be awarded to any one employee, subject to adjustment for changes in capitalization. The maximum cash amount payable pursuant to any “performance-based” award to any participant in any calendar year is $5.0 million.

On May 4, 2023, the 2023 Omnibus Incentive Compensation Plan (the "MUSA 2023 Plan") was approved by the Company's shareholders and became effective for all future grants for both employees and directors. The MUSA 2023 Plan replaced the MUSA 2013 Plan and the 2013 Directors Plan, each of which expired on August 8, 2023. The MUSA 2023 Plan authorizes the Committee to grant to non-employee directors, employees, and consultants of the Company, or any of its subsidiaries, stock options (incentive stock options ("ISOs") and nonqualified stock options ("NQSO")), stock appreciation rights ("SARs"), restricted stock, restricted stock units ("RSUs"), performance awards or other cash-based awards and other stock-based awards. The maximum number of shares available for issuance under the MUSA 2023 Plan shall not exceed in the aggregate 1.725 million shares (subject to certain adjustments). During the period from May 4, 2023 to December 31, 2025, the Company granted a total of 191,075 awards from the MUSA 2023 Plan, which leaves 1,533,925 remaining shares. At present, the Company expects to issue all shares that vest out of our existing treasury shares rather than issuing new common shares.
Beginning with its initial quarterly dividend in December 2020, the Company has issued dividend equivalent units ("DEUs") on all outstanding, unvested equity awards (except stock options) in an amount commensurate with regular quarterly dividends paid on common stock. The terms of the DEUs mirror the underlying awards and will only vest if the related award vests. DEUs issued are included with grants in each respective table as applicable.

STOCK OPTIONS – The Committee fixes the option price of each option granted at no less than fair market value ("FMV") on the date of the grant and fixes the option term at no more than 7 years from such date. Most of the nonqualified stock options granted by the Committee in 2025 to certain employees were granted in February 2025.

Following are the assumptions used by the Company to value the original awards:

 Years Ended December 31,
 202520242023
Fair value per option grant$154.07 $133.91 $88.53 
Assumptions   
Dividend yield0.4%0.4%0.5%
Expected volatility27.9%32.9%33.1%
Risk-free interest rate4.5%4.3%3.8%
Expected life (years)4.84.84.9
Stock price at valuation date$492.22 $391.54 $263.48 

Changes in options outstanding for Company employees during the period from December 31, 2024 to December 31, 2025 are presented in the following table:
OptionsNumber of SharesWeighted-Average Exercise PriceWeighted-Average Remaining Contractual
Term (Years)		Aggregate Intrinsic Value (Millions of Dollars)
Outstanding at December 31, 2024259,750 $180.68 
Granted 28,900 $492.22 
Exercised(36,200)$99.28 
Forfeited(7,350)$410.81 
Outstanding at December 31, 2025245,100 $222.54 3.1$46.7 
Exercisable at December 31, 2025172,790 $148.96 2.2$44.0 
Additional information about stock options outstanding at December 31, 2025 is shown below:

 Options OutstandingOptions Exercisable
Range of Exercise Prices per OptionNo. of OptionsAvg. Life Remaining in YearsNo. of OptionsAvg. Life Remaining in Years
$0.00to$99.998,600 0.28,600 0.2
$100.00to$149.9998,140 1.698,140 1.6
$150.00to$249.9947,900 3.047,900 3.0
$250.00to$349.9934,550 3.917,750 3.7
$350.00to$449.9929,710 5.1400 1.2
$450.00&Above26,200 6.1— —
 245,100 3.1172,790 2.2

RESTRICTED STOCK UNITS – The Committee has granted time-based RSUs as part of the compensation plan for its executives and certain other employees since its inception. The awards granted in the current year were under the MUSA 2023 Plan, are valued at the grant date fair value, and vest over three years. The Committee has also granted time-based RSUs to the non-employee directors of the Company as part of their overall compensation package for being a member of the Board of Directors, which vest at the end of one year. For annual equity grants to non-employee directors, the directors may elect to defer receipt of their vested RSUs until their service ends. These RSUs are included in the RSU table below, will vest in one year, and will thereafter become deferred stock units.

Changes in RSUs outstanding during the period from December 31, 2024 to December 31, 2025 are presented in the following table:

RSUsNumber of UnitsWeighted-Average Grant Date Fair ValueTotal Fair Value (Millions of Dollars)
Outstanding at December 31, 202498,214 $285.60 
Granted29,467 $462.80 
Vested and issued(38,968)$212.35 $17.9 
Forfeited(6,798)$386.91 
Outstanding at December 31, 202581,915 $376.60 $33.1 
 
DIRECTOR DEFERRED STOCK UNITS (MUSA 2023 Plan) — Non-employee directors can elect to receive their annual cash retainers in the form of Deferred Stock Units ("DSUs"). The DSUs are recognized at their fair value on the date of the grant. Director fees which are deferred into DSUs are calculated and expensed each quarter by taking fees earned during the quarter and dividing by the closing price of our common stock on the last trading day of the quarter. Each DSU represents the right to receive one share of common stock following the completion of a director's service. During the period ended December 31, 2025, we granted 865 DSUs and recorded director expense of $0.4 million related to the grants. At December 31, 2025, there were 2,604 Director DSUs vested and outstanding with an average grant date fair value of $399.79 per unit under the MUSA 2023 Plan.

PERFORMANCE-BASED RESTRICTED STOCK UNITS – The Committee has granted performance-based restricted stock units (performance units or "PSUs") to its executives and certain other employees.  In February 2025, the Committee awarded PSUs to certain employees.  Half of the PSUs vest based on a three-year return on average capital employed ("ROACE") calculation and the other half vest based on a three-year total shareholder return ("TSR") calculation that compares MUSA to a group of 17 peer companies.  The portion of the awards that vest based on TSR qualify as a market condition and must be valued using a Monte Carlo valuation model.  For the TSR portion of the awards, the fair value was determined to be $674.28 per unit.  For
the ROACE portion of the awards, the valuation was based on the grant date fair value of $492.22 per unit and the number of awards will be periodically assessed to determine the probability of vesting. 

Changes in PSUs outstanding for Company employees during the period from December 31, 2024 to December 31, 2025 are presented in the following table:

Employee PSUsNumber of UnitsWeighted-Average Grant Date Fair ValueTotal Fair Value (Millions of Dollars)
Outstanding at December 31, 202477,395 $320.05 
Granted49,371 $583.25 
Vested and issued(61,288)$221.39 $29.7 
Forfeited(5,874)$466.58 
Outstanding at December 31, 202559,604 $438.28 $24.1 
2013 Stock Plan for Non-employee Directors

Effective August 8, 2013, Murphy USA adopted the 2013 Murphy USA Stock Plan for Non-employee Directors (the “2013 Directors Plan”).  The directors for Murphy USA are compensated with a mixture of cash payments and equity-based awards.

RESTRICTED STOCK UNITS (2013 Directors Plan) – The Committee has also granted time based RSUs to the non-employee directors of the Company as part of their overall compensation package for being a member of the Board of Directors.  Awards prior to 2023 vest at the end of three years and those granted in 2023 vested at the end of one year.

Changes in Director RSUs outstanding for Company non-employee directors during the period from December 31, 2024 to December 31, 2025 are presented in the following table:

2013 Plan — Director RSUsNumber of UnitsWeighted-Average Grant Date Fair ValueTotal Fair Value (Millions of Dollars)
Outstanding at December 31, 20249,436 $196.38 
Granted 12 $406.93 
Vested and issued(7,174)$175.84 $3.5 
Outstanding at December 31, 20252,274 $261.51 $0.9 
 
DEFERRED STOCK UNITS (2013 Directors Plan) — Effective January 1, 2023, non-employee directors could elect to receive their annual cash retainers in the form of DSUs. Each DSU represents the right to receive one share of common stock following the completion of a director's service. At December 31, 2025 there were 426 Director DSUs outstanding with an average grant date fair value of $259.87 per unit under the 2013 Directors Plan.
Amounts recognized in the financial statements by the Company with respect to all share-based compensation plans are shown in the following table:
 
 Years Ended December 31,
(Millions of dollars)202520242023
Compensation charged against income before income tax benefit$28.6 $22.9 $21.8 
Related income tax benefit recognized in income$6.0 $4.8 $4.6 

As of December 31, 2025, there was $18.3 million in compensation costs to be expensed over approximately the next 2.2 years related to unvested share-based compensation arrangements granted by the
Company.  Employees who have stock options are required to net settle their options in shares, after applicable statutory withholding taxes are considered, upon each stock option exercise. Therefore, no cash is received upon exercise. Total income tax benefits realized from tax deductions related to stock option exercises under share-based payment arrangements were $0.4 million, $1.1 million and $0.8 million for the years ended December 31, 2025, 2024 and 2023, respectively.
v3.25.4
Employee and Retiree Benefit Plans
 12 Months Ended
Dec. 31, 2025
Retirement Benefits [Abstract]  
Employee and Retiree Benefit Plans Employee and Retiree Benefit Plans
THRIFT PLAN – Employees of the Company may participate in defined contribution savings plans by contributing up to a specified percentage of their base pay.  The Company matches contributions for Murphy USA eligible employees at 100% of each employee’s contribution, up to a maximum of 6%.  In addition, the Company makes annual retirement contributions on an annual basis for Murphy USA employees.  Eligible employees receive a stated percentage of their base and eligible incentive pay of which can range from 3% to 9% based on participant's age, years of service, date of hire, subsidiary organization, or role. Beginning in 2023, the QuickChek Corporation 401(k) Retirement and Savings Plan and the Murphy Profit Sharing Plan were merged into the Murphy USA Savings Plan. The Company’s combined expenses related to these plans were $21.1 million in 2025, $25.9 million in 2024 and $23.8 million in 2023.

SUPPLEMENTAL EXECUTIVE RETIREMENT – The Company provides a Supplemental Executive Retirement Plan ('SERP'), a nonqualified deferred compensation plan for Murphy USA employees, to eligible executives and certain members of management. The SERP plan is intended to restore qualified defined contribution plan benefits restricted under the Internal Revenue Code of 1986 to certain highly compensated individuals. The liability balances, net of associated assets, were $8.4 million and $11.4 million, at December 31, 2025 and 2024, respectively.
v3.25.4
Financial Instruments and Risk Management
 12 Months Ended
Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Financial Instruments and Risk Management Financial Instruments and Risk Management
DERIVATIVE INSTRUMENTS — The Company makes limited use of derivative instruments to manage certain risks related to commodity prices and interest rates. The use of derivative instruments for risk management is covered by operating policies and is closely monitored by the Company’s senior management. The Company does not hold any derivatives for speculative purposes, and it does not use derivatives with leveraged or complex features. Derivative instruments are traded primarily with creditworthy major financial institutions or over national exchanges such as the New York Mercantile Exchange (“NYMEX”). For accounting purposes, the Company has not designated commodity derivative contracts as hedges, and therefore, it recognizes all gains and losses on these derivative contracts in its Consolidated Statement of Income. Certain interest rate derivative contracts were accounted for as hedges and gain or loss associated with recording the fair value of these contracts was deferred in AOCI until the anticipated transactions occurred. As of December 31, 2025, all current commodity derivative activity is immaterial.
 
There were nominal cash deposits at December 31, 2025 and $0.2 million at December 31, 2024 related to commodity derivative contracts reported in Prepaid expenses and other current assets in the Consolidated Balance Sheets. These cash deposits have not been used to increase the reported net assets or reduce the reported net liabilities on the derivative contracts at December 31, 2025 and 2024.
v3.25.4
Earnings Per Share
 12 Months Ended
Dec. 31, 2025
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
Basic earnings per common share is computed by dividing net income available to common stockholders by the weighted-average of common shares outstanding during the period.  Diluted earnings per common share adjusts basic earnings per common share for the effects of stock options and restricted stock in the periods where such items are dilutive.
 
On December 1, 2021, the Board of Directors approved a share repurchase authorization of up to $1 billion to begin upon completion of the $500 million authorization made in October 2020. The 2021 authorization was completed in October 2023. On May 2, 2023, the Board of Directors approved another share repurchase authorization of up to $1.5 billion, excluding excise taxes, to be executed by December 31, 2028. On October 29, 2025, the Company announced that the Board of Directors approved a new share repurchase authorization
of up to $2.0 billion, excluding excise taxes, to be executed by December 31, 2030. This authorization will commence at the conclusion of the existing 2023 authorization.

During the year 2025, the total number of share repurchases were 1,536,701 common shares for approximately $652.0 million, at an average price of $424.28 per share, including brokerage fees and accrued excise taxes, under the 2023 $1.5 billion authorization, leaving approximately $291.9 million remaining available, as of December 31, 2025.

During the years 2024 and 2023, the total number of share repurchases were 938,528 common shares for $446.6 million, at an average price of $475.86 per share and 1,026,300 common shares for $336.2 million, at an average price of $327.55 per share, respectively.

The following table provides a reconciliation of basic and diluted earnings per share computations for the years ended December 31, 2025, 2024 and 2023.

 Years ended December 31,
(Millions of dollars, except share and per share amounts)202520242023
Earnings per common share:   
Net income per share - basic
Net income attributable to common stockholders$470.6 $502.5 $556.8 
Weighted-average common shares outstanding (in thousands)19,303 20,533 21,493 
Earnings per common share$24.38 $24.47 $25.91 
Earnings per common share - assuming dilution:
Net income per share - diluted
Net income attributable to common stockholders$470.6 $502.5 $556.8 
Weighted-average common shares outstanding (in thousands)19,303 20,533 21,493 
Common equivalent shares:   
Share-based awards223 309 350 
Weighted-average common shares outstanding - assuming dilution (in thousands)19,526 20,842 21,843 
Earnings per common share assuming dilution$24.10 $24.11 $25.49 
 
We have excluded from the earnings-per-share calculation certain stock options and shares that are considered to be anti-dilutive under the treasury stock method and are reported in the table below.
Years ended December 31,
Potentially dilutive shares excluded from the calculation as their inclusion would be anti-dilutive202520242023
Stock Options56,391 28,929 34,133 
RSUs7,429 13 44 
PSUs— 452 — 
Total anti-dilutive shares63,820 29,394 34,177 
v3.25.4
Other Financial Information
 12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Other Financial Information Other Financial Information
 
CASH FLOW DISCLOSURES — Interest paid, net of amounts capitalized, was $105.1 million, $93.1 million and $92.3 million for the years ended December 31, 2025, 2024 and 2023, respectively.

CHANGES IN WORKING CAPITAL:
Years ended December 31,
(Millions of dollars)202520242023
Accounts receivable$(8.1)$65.4 $(56.3)
Inventories(11.4)(60.2)(22.1)
Prepaid expenses and other current assets3.6 (3.1)25.2 
Accounts payable and accrued liabilities(4.3)(3.9)(12.0)
Income taxes payable(12.9)34.6 23.1 
Net (increase) decrease in noncash operating
working capital		$(33.1)$32.8 $(42.1)
v3.25.4
Assets and Liabilities Measured at Fair Value
 12 Months Ended
Dec. 31, 2025
Fair Value Disclosures [Abstract]  
Assets and Liabilities Measured at Fair Value Assets and Liabilities Measured at Fair Value
The Company carries certain assets and liabilities at fair value in its Consolidated Balance Sheets. The fair value hierarchy is based on the quality of inputs used to measure fair value, with Level 1 being the highest quality and Level 3 being the lowest quality. Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Level 2 inputs are observable inputs other than quoted prices included within Level 1. Level 3 inputs are unobservable inputs which reflect assumptions about pricing by market participants.

The Company's available-for-sale marketable securities consist of high quality, investment grade securities from diverse issuers. We value these securities at the closing price in the principal active markets as of the last business day of the reporting period. The fair values of the Company's marketable securities by asset class are described in Note 5 "Marketable Securities" in these consolidated financial statements for the period ended December 31, 2025. We value the deferred compensation plan assets, which consist of money market and mutual funds, based on quoted prices in active markets at the measurement date. For additional information on deferred compensation plans see also Note 13 "Employee and Retirement Benefit Plans" in these consolidated financial statements for the period ended December 31, 2025.

At the balance sheet date, the fair value of commodity derivatives contracts was determined using NYMEX quoted values. The carrying value of the Company’s Cash and cash equivalents, Accounts receivable-trade and Trade accounts payable and accrued liabilities approximates fair value. See also Note 14 "Financial Instruments and Risk Management" in these consolidated financial statements for the period ended December 31, 2025, for more information.

Financial assets and liabilities measured at fair value on a recurring basis

The following table presents the Company's financial assets and liabilities measured at fair value on a recurring basis, as of December 31, 2025 and 2024:

 December 31, 2025
(Millions of dollars)Level 1Level 2Level 3Fair Value
Financial assets
Prepaid expenses and other current assets
Fuel derivative$— $— $— $— 
Other assets
Deferred compensation plan assets18.6 — — 18.6 
 December 31, 2025
(Millions of dollars)Level 1Level 2Level 3Fair Value
Financial liabilities
Deferred credits and other liabilities
Deferred compensation plan liabilities(26.7)— — (26.7)
$(8.1)$— $— $(8.1)

December 31, 2024
(Millions of dollars)Level 1Level 2Level 3Fair Value
Financial assets
Prepaid expenses and other current assets
Fuel derivative— — 0.2 0.2 
Other assets
Deferred compensation plan assets14.9 — — 14.9 
Financial liabilities
Deferred credits and other liabilities
Deferred compensation plan liabilities(26.3)— — (26.3)
$(11.4)$— $0.2 $(11.2)

Fair value of financial instruments not recognized at fair value
The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. The table below excludes Cash and cash equivalents, Accounts receivable-trade, and Trade accounts payable and accrued liabilities, all of which had fair values approximating carrying amounts. The fair value of Current and Long-Term debt was estimated based on rates offered to the Company at that time for debt of the same maturities. The Company has off-balance sheet exposures relating to certain financial guarantees and letters of credit. The fair value of these, which represents fees associated with obtaining the instruments, was nominal.

The following table presents the carrying amounts and estimated fair values of financial instruments held by the Company at December 31, 2025 and 2024.

 December 31, 2025December 31, 2024
 CarryingLevel 2CarryingLevel 2
(Millions of dollars)AmountFair ValueAmountFair Value
Financial liabilities    
Current and long-term debt, excluding finance leases$(2,064.1)$(2,081.2)$(1,728.7)$(1,717.5)
v3.25.4
Commitments
 12 Months Ended
Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Commitments Commitments
Rental expense for non-cancellable operating leases, including contingent payments when applicable, was $73.7 million in 2025, $66.2 million in 2024 and $60.7 million in 2023. 

Commitments for capital expenditures were approximately $356.8 million at December 31, 2025, including $308.3 million approved for potential construction of future stores (including land) at year-end, along with $37.8 million for improvements of existing stores and the remaining $10.8 million for other corporate
investments and other strategic initiatives, to be financed with our operating cash flow and/or incurrence of indebtedness.
The Company has certain take-or-pay contracts primarily to supply terminals with a non-cancellable remaining term of 4.8 years. At December 31, 2025, our minimum annual payments under our take-or-pay contracts are estimated to be $9.0 million in 2026 and $7.0 million in 2027, $5.2 million in 2028, $5.1 million in 2029, and $3.8 million in 2030.
v3.25.4
Contingencies
 12 Months Ended
Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Contingencies Contingencies 
 
The Company’s operations and earnings have been and may be affected by various forms of governmental action. Examples of such governmental action include, but are by no means limited to: tax increases and retroactive tax claims; import and export controls; price controls; allocation of supplies of crude oil and petroleum products and other goods; laws and regulations intended for the promotion of safety and the protection and/or remediation of the environment; governmental support for other forms of energy; and laws and regulations affecting the Company’s relationships with employees, suppliers, customers, stockholders and others. Because governmental actions are often motivated by political considerations, may be taken without full consideration of their consequences, and may be taken in response to actions of other governments, it is not practical to attempt to predict the likelihood of such actions, the form the actions may take or the effect such actions may have on the Company.
 
ENVIRONMENTAL MATTERS AND LEGAL MATTERS — Murphy USA is subject to numerous federal, state and local laws, regulations and permit requirements dealing with the environment. Violation of such environmental laws, regulations and permits can result in the imposition of significant civil and criminal penalties, injunctions, and other sanctions. A discharge of hazardous substances into the environment could, to the extent such event is not adequately insured, subject the Company to substantial expense, including the cost to comply with applicable laws and regulations, claims by neighboring landowners, governmental authorities and other third parties for any personal injury, property damage and other losses that might result.
 
The Company currently owns or leases, and has in the past owned or leased, properties at which hazardous substances have been or are being handled. In connection with these activities, hazardous substances may have been disposed of or released on or under the properties owned or leased by the Company or on or under other locations where they have been taken for disposal. In addition, many of these properties have been operated by third parties whose management of hazardous substances was not under the Company’s control. Under existing laws, the Company could be required to remediate contaminated property (including contaminated groundwater) or to perform remedial actions to prevent future contamination. Certain of these contaminated properties are in various stages of negotiation, investigation, and/or cleanup, and the Company is investigating the extent of any related liability and the availability of applicable defenses. With the sale of the U.S. refineries in 2011, Murphy Oil retained certain liabilities related to environmental matters. Murphy Oil also obtained insurance covering certain levels of environmental exposures. With respect to the previously owned refinery properties, Murphy Oil retained those liabilities in the Separation and Distribution agreement that was entered into related to the separation on August 30, 2013.  With respect to any remaining potential liabilities, based on information currently available to the Company, the Company believes costs related to these properties will not have a material adverse effect on Murphy USA’s net income, financial position or liquidity in a future period.
 
While it is possible that certain environmental expenditures could be recovered by the Company from other sources, primarily environmental funds maintained by certain states, no assurance can be given that future recoveries from these other sources will occur. As such, the Company has not recorded a benefit for likely recoveries at December 31, 2025, however certain jurisdictions provide reimbursement for these expenses which have been considered in recording the net exposure. The U.S. currently considers the Company a PRP at one Superfund site.  As to the site, the potential total cost to all parties to perform necessary remedial work at this site may be substantial. However, based on current negotiations and available information, the Company believes that it is a de minimis party as to ultimate responsibility at the Superfund site. Accordingly, the Company has not recorded a liability for remedial costs at the Superfund site at December 31, 2025. The Company could be required to bear a pro rata share of costs attributable to nonparticipating PRPs or could be
assigned additional responsibility for remediation at this site or other Superfund sites. Based on information currently available to the Company, the Company believes that its share of the ultimate costs to clean-up this site will be immaterial and will not have a material adverse effect on its net income, financial position or liquidity in a future period.

Based on information currently available to the Company, the amount of future remediation costs to be incurred to address known contamination sites is not expected to have a material adverse effect on the Company’s future net income, cash flows or liquidity. However, there is the possibility that additional environmental expenditures could be required to address contamination, including as a result of discovering additional contamination or the imposition of new or revised requirements applicable to known contamination, and such additional expenditures could be material.
  
Murphy USA is engaged in a number of other legal proceedings, all of which the Company considers routine and incidental to its business. Currently, the state of Delaware has filed a lawsuit against energy companies, including the Company. This lawsuit alleges damages as a result of climate change and the plaintiff is seeking unspecified damages and abatement under various tort theories. At this stage, the ultimate outcome of this matter remains uncertain, and neither the likelihood of an unfavorable outcome nor the ultimate liability, if any, can be determined. Based on information currently available to the Company, the ultimate resolution of this legal matter is not expected to have a material adverse effect on the Company’s net income, financial condition, or liquidity in a future period.

INSURANCE — The Company maintains insurance coverage at levels that are customary and consistent with industry standards for companies of similar size. Murphy USA maintains statutory workers compensation insurance with a deductible of $1.0 million per occurrence, general liability insurance with a deductible of $3.0 million per occurrence, and auto liability insurance with a deductible of $0.3 million per occurrence. As of December 31, 2025, there were a number of outstanding claims that are of a routine nature. The estimated incurred but unpaid liabilities relating to these claims are included in Trade account payables and accrued liabilities on the Consolidated Balance Sheets. While the ultimate outcome of these claims cannot presently be determined, management believes that the accrued liability of $60.7 million will be sufficient to cover the related liability and that the ultimate disposition of these claims will have no material effect on the Company’s financial position and results of operations.

The Company has obtained insurance coverage as appropriate for the business it is engaged in, but may incur losses that are not covered by insurance or reserves, in whole or in part, and such losses could adversely affect our results of operations and financial position.
 
TAX MATTERS — Murphy USA is subject to extensive tax liabilities imposed by multiple jurisdictions, including income taxes, indirect taxes (excise/duty, sales/use and gross receipts taxes), payroll taxes, franchise taxes, withholding taxes and ad valorem taxes. New tax laws and regulations and changes in existing tax laws and regulations are continuously being enacted or proposed that could result in increased expenditures for tax liabilities in the future. Many of these liabilities are subject to periodic audits by the respective taxing authority. Subsequent changes to our tax liabilities because of these audits may subject us to interest and penalties.
 
OTHER MATTERS — In the normal course of its business, the Company is required under certain contracts with various governmental authorities and others to provide financial guarantees or letters of credit that may be drawn upon if the Company fails to perform under those contracts. At December 31, 2025, the Company had contingent liabilities of $7.9 million on outstanding letters of credit. The Company has not accrued a liability in its balance sheet related to these financial guarantees and letters of credit because it is believed that the likelihood of having these drawn is remote.
v3.25.4
Lease Accounting
 12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Lease Accounting Lease Accounting
The Company determines if an arrangement is a lease or contains a lease at inception. Operating lease right-of-use assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Leases with an initial term of 12 months or less are not recorded on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term. The
Company's leases have remaining lease terms of approximately 1 years or less to 34 years, which may include the option to extend the lease when it is reasonably certain the Company will exercise the option. Most leases include one or more options to renew, with renewal terms that can extend the lease term from 5 to 20 years or more. The exercise of lease renewal options is at the Company's sole discretion. Due to the uncertainties of future markets, economic factors, technology changes, demographic shifts and behavior, environmental regulatory requirements and other information that impacts decisions as to store location, management has determined that it was not reasonably certain to exercise contract options and they are not included in the lease term. Additionally, short-term leases and leases with variable lease costs are immaterial. The Company reviews all options to extend, terminate, or otherwise modify its lease agreements to determine if changes are required to the right-of-use assets and liabilities.

As the implicit interest rate is not readily determinable in most of the Company's lease agreements, the Company uses its estimated secured incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments.

Lessor — We have various arrangements for certain spaces for food service and vending equipment under which we are the lessor. These leases meet the criteria for operating lease classification. Lease income associated with these leases is immaterial. We also have certain areas where we sublease building and land space to others. This lease income is immaterial.

Lessee — We lease land for 481 stores, one terminal, and various equipment. Our lease agreements do not contain any material residual value guarantees and approximately 103 sites leased from Walmart contain restrictive covenants, though the restrictions are deemed to have an immaterial impact.

Leases are reflected in the following balance sheet accounts:

(Millions of dollars)ClassificationDecember 31,
2025		December 31,
2024
Assets
Operating (Right-of-use)Operating lease right-of-use assets, net$526.3 $492.9 
Finance
Property, plant, and equipment, at cost, less accumulated depreciation of $69.0 in 2025
and $56.3 in 2024
100.2 103.9 
Total leased assets$626.5 $596.8 
Liabilities
Current
OperatingTrade accounts payable and accrued liabilities$25.8 $23.7 
FinanceCurrent maturities of long-term debt 13.0 11.7 
Noncurrent
OperatingNon-current operating lease liabilities534.6 496.3 
FinanceLong-term debt, including capitalized lease obligations105.5 108.0 
Total lease liabilities$678.9 $639.7 
Lease Cost:Years Ended December 31,
(Millions of dollars)Classification202520242023
Operating lease costStore and other operating expenses$66.7 $59.6 $55.1 
Finance lease cost
Amortization of leased
assets		Depreciation & amortization expense14.6 14.6 15.0 
Interest on lease liabilitiesInterest expense8.0 8.3 8.9 
Net lease costs$89.3 $82.5 $79.0 

Cash Flow Information:Years Ended December 31,
(Millions of dollars)202520242023
Cash paid for amounts included in the measurement of liabilities
   Operating cash flows required by operating leases$61.0 $53.8 $50.6 
   Operating cash flows required by finance leases$8.0 $8.3 $8.9 
   Financing cash flows required by finance leases$12.4 $11.7 $11.4 

Maturity of Lease Liabilities:
(Millions of dollars)Operating leasesFinance leases
2026$66.6 $20.6 
202766.6 19.5 
202865.6 18.5 
202964.0 16.4 
203062.4 14.1 
After 2030661.0 84.4 
Total lease payments986.2 173.5 
Less: interest425.8 55.0 
Present value of lease liabilities$560.4 $118.5 

Lease Term and Discount Rate:Year Ended December 31,
2025
Weighted-average remaining lease term (years)
   Finance leases10.8
   Operating leases14.6
Weighted-average discount rate
   Finance leases6.9 %
   Operating leases7.3 %
Lease Accounting Lease Accounting
The Company determines if an arrangement is a lease or contains a lease at inception. Operating lease right-of-use assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Leases with an initial term of 12 months or less are not recorded on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term. The
Company's leases have remaining lease terms of approximately 1 years or less to 34 years, which may include the option to extend the lease when it is reasonably certain the Company will exercise the option. Most leases include one or more options to renew, with renewal terms that can extend the lease term from 5 to 20 years or more. The exercise of lease renewal options is at the Company's sole discretion. Due to the uncertainties of future markets, economic factors, technology changes, demographic shifts and behavior, environmental regulatory requirements and other information that impacts decisions as to store location, management has determined that it was not reasonably certain to exercise contract options and they are not included in the lease term. Additionally, short-term leases and leases with variable lease costs are immaterial. The Company reviews all options to extend, terminate, or otherwise modify its lease agreements to determine if changes are required to the right-of-use assets and liabilities.

As the implicit interest rate is not readily determinable in most of the Company's lease agreements, the Company uses its estimated secured incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments.

Lessor — We have various arrangements for certain spaces for food service and vending equipment under which we are the lessor. These leases meet the criteria for operating lease classification. Lease income associated with these leases is immaterial. We also have certain areas where we sublease building and land space to others. This lease income is immaterial.

Lessee — We lease land for 481 stores, one terminal, and various equipment. Our lease agreements do not contain any material residual value guarantees and approximately 103 sites leased from Walmart contain restrictive covenants, though the restrictions are deemed to have an immaterial impact.

Leases are reflected in the following balance sheet accounts:

(Millions of dollars)ClassificationDecember 31,
2025		December 31,
2024
Assets
Operating (Right-of-use)Operating lease right-of-use assets, net$526.3 $492.9 
Finance
Property, plant, and equipment, at cost, less accumulated depreciation of $69.0 in 2025
and $56.3 in 2024
100.2 103.9 
Total leased assets$626.5 $596.8 
Liabilities
Current
OperatingTrade accounts payable and accrued liabilities$25.8 $23.7 
FinanceCurrent maturities of long-term debt 13.0 11.7 
Noncurrent
OperatingNon-current operating lease liabilities534.6 496.3 
FinanceLong-term debt, including capitalized lease obligations105.5 108.0 
Total lease liabilities$678.9 $639.7 
Lease Cost:Years Ended December 31,
(Millions of dollars)Classification202520242023
Operating lease costStore and other operating expenses$66.7 $59.6 $55.1 
Finance lease cost
Amortization of leased
assets		Depreciation & amortization expense14.6 14.6 15.0 
Interest on lease liabilitiesInterest expense8.0 8.3 8.9 
Net lease costs$89.3 $82.5 $79.0 

Cash Flow Information:Years Ended December 31,
(Millions of dollars)202520242023
Cash paid for amounts included in the measurement of liabilities
   Operating cash flows required by operating leases$61.0 $53.8 $50.6 
   Operating cash flows required by finance leases$8.0 $8.3 $8.9 
   Financing cash flows required by finance leases$12.4 $11.7 $11.4 

Maturity of Lease Liabilities:
(Millions of dollars)Operating leasesFinance leases
2026$66.6 $20.6 
202766.6 19.5 
202865.6 18.5 
202964.0 16.4 
203062.4 14.1 
After 2030661.0 84.4 
Total lease payments986.2 173.5 
Less: interest425.8 55.0 
Present value of lease liabilities$560.4 $118.5 

Lease Term and Discount Rate:Year Ended December 31,
2025
Weighted-average remaining lease term (years)
   Finance leases10.8
   Operating leases14.6
Weighted-average discount rate
   Finance leases6.9 %
   Operating leases7.3 %
v3.25.4
Recent Accounting and Reporting Rules
 12 Months Ended
Dec. 31, 2025
Accounting Standards Update and Change in Accounting Principle [Abstract]  
Recent Accounting and Reporting Rules Recent Accounting and Reporting Rules
In November 2024, the FASB issued ASU 2024-03, "Disaggregation of Income Statement Expenses." This ASU addresses investor requests for more granular information about an entity’s expenses, allowing investors to better understand performance, prospects for future cash flows, and comparability over time and with other entities. The primary goal is to improve the decision-usefulness of expense information on public companies’
income statements through disaggregation of relevant expense captions in the notes to the financial statements. The amendments in this update are effective for the Company for annual periods beginning after December 15, 2026, and interim periods in the year beginning after December 15, 2027. Early adoption is permitted. The amendments should be applied either prospectively or retrospectively. The Company is currently assessing the impact of the standard on the consolidated financial statements.

In July 2025, the FASB issued ASU 2025-05, "Financial Instruments—Measurement of Credit Losses for Accounts Receivable and Contract Assets." This ASU addresses challenges encountered when applying the guidance in Topic 326, Financial Instruments—Credit Losses, to current accounts receivable and current contract assets arising from transactions accounted for under Topic 606, Revenue from Contracts with Customers. The amendments in this update introduce a practical expedient for all entities, and an accounting policy election for entities other than public business entities. The amendments will be effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption is permitted. The Company does not expect for this to have a material impact on the consolidated financial statements.

In November 2025, the FASB issued ASU 2025-09, “Derivatives and Hedging (Topic 815)—Hedge Accounting Improvements.” This ASU is intended to more closely align financial reporting with the economics of some of an entity’s risk management activities. The changes are in response to stakeholder feedback from implementing ASU 2017-12 and the effects of LIBOR cessation. The main amendments relate to cash flow hedging, but some of the amendments affect certain fair value and net investment hedges. The amendments will be effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods within those annual reporting periods. Early adoption is permitted, and the amendments are to be applied prospectively. The Company is currently assessing the impact of the standard on the consolidated financial statements.

In December 2025, the FASB issued ASU 2025-11, "Interim Reporting (Topic 270)—Narrow-Scope Improvements". This ASU clarifies the interim reporting requirements by improving navigability of Topic 270 and more clearly specifying what disclosures are required in an interim reporting period. It is not intended to significantly change interim reporting or expand or reduce interim disclosure requirements. The amendments will be effective for interim reporting periods beginning after December 15, 2027. Early adoption is permitted, and the amendments may be applied either prospectively or retrospectively. The Company is currently evaluating the impact of the standard on the consolidated financial statements and does not expect the adoption to have a material impact.
v3.25.4
Business Segments
 12 Months Ended
Dec. 31, 2025
Segment Reporting [Abstract]  
Business Segments Business Segments
We identify reportable segments based on how we manage the company's operations. Our operations include the sale of retail motor fuel products and convenience merchandise along with the wholesale and bulk sale capabilities of our product supply and wholesale group. As the primary purpose of the product supply and wholesale group is to support our retail operations and provide fuel for their daily operation, the bulk and wholesale fuel sales are secondary to the support functions played by these groups. As such, they are all treated as one segment for reporting purposes as they sell the same products and have similar economic characteristics. This Marketing segment contains essentially all of the revenue generating activities of the Company. Results not included in the reportable segment are included in Corporate and Other Assets. The reportable segment was determined based on information reviewed by the Chief Operating Decision Maker (CODM), who is the Chief Executive Officer.

The CODM evaluates performance and allocates resources for its reportable segment using segment income (loss). This metric is used to evaluate the overall financial performance of the Marketing segment, make operational and strategic decisions, prepare our annual plan, and allocate resources.

The accounting policies for the Marketing segment are consistent with those described in the summary of significant accounting policies. No eliminations are required for the presentation below because virtually all corporate and other costs are allocated to the Marketing segment.
Marketing Segment InformationYears ended December 31,
(Millions of dollars)202520242023
Revenues from external customers$19,383.5 $20,243.7 $21,528.9 
Reconciliation of revenue
Other revenues1
0.5 0.6 0.5 
Total consolidated revenue$19,384.0 $20,244.3 $21,529.4 
Less:2
Cost of goods sold17,024.6 17,937.5 19,215.6 
Store and other operating expenses1,108.3 1,064.4 1,014.6 
Selling, general and administrative231.5 235.4 240.5 
Depreciation and amortization250.8 229.8 211.9 
Other segment items3
11.2 16.0 3.5 
Interest expense8.0 8.4 8.9 
Segment income before income taxes$749.1 $752.2 $833.9 
Reconciliation of income before income taxes
Income before income taxes$609.2 $651.6 $734.4 
Other (revenues)1
(0.5)(0.6)(0.5)
Other operating expenses0.2 0.2 0.2 
Depreciation and amortization26.0 18.2 16.8 
Restructuring expenses12.6 — — 
(Gain) loss on sale of assets0.3 (0.1)0.1 
Investment (income) loss(0.2)(6.4)(6.9)
Interest expense102.9 88.7 89.6 
Other nonoperating (income) expense(1.4)0.6 0.2 
Segment income before income taxes$749.1 $752.2 $833.9 
1Revenues from corporate and other assets not included in the reportable segment results.
2The significant expense categories and amounts align with the segment-level information that is regularly provided to the CODM. Intersegment expenses are included within the amounts shown.
3Other segment items includes: accretion of asset retirement obligations, impairment of properties, (gain) loss on sale of assets and other nonoperating (income) expense
Other specified segment disclosures
(Millions of dollars)Marketing
Totals
Reconciling Items4
Consolidated
Totals
Year ended December 31, 2025
Accretion of asset retirement obligations$3.4 $— $3.4 
Deferred and noncurrent income taxes (benefits)$58.4 $(13.3)$45.1 
Additions to property, plant and equipment$414.6 $17.8 $432.4 
Total assets at year-end$4,534.6 $191.2 $4,725.8 
(Millions of dollars)Marketing
Totals
Reconciling Items4
Consolidated
Totals
Year ended December 31, 2024
Accretion of asset retirement obligations$3.2 $— $3.2 
Deferred and noncurrent income taxes (benefits)$17.6 $(3.6)$14.0 
Additions to property, plant and equipment$464.1 $38.9 $503.0 
Total assets at year-end$4,326.8 $214.8 $4,541.6 
(Millions of dollars)Marketing
Totals
Reconciling Items4
Consolidated
Totals
Year ended December 31, 2023
Accretion of asset retirement obligations$3.0 $— $3.0 
Deferred and noncurrent income taxes (benefits)$(4.5)$6.5 $2.0 
Additions to property, plant and equipment$289.5 $54.6 $344.1 
Total assets at year-end$4,061.7 $278.4 $4,340.1 
4Corporate and other assets not included in the reportable segment results.
v3.25.4
Restructuring Expenses
 12 Months Ended
Dec. 31, 2025
Restructuring and Related Activities [Abstract]  
Restructuring Expenses Restructuring Expenses
The Company recognizes restructuring expense when related costs constitute a present obligation that is both probable and reasonably estimable. During the third quarter of 2025, the Company incurred restructuring charges as part of its ongoing efforts to strengthen operational effectiveness, improve organizational efficiency and position the company for long-term success. These expenses, included in "Restructuring expense" in the Consolidated Statements of Income, consisted primarily of severance and other employee costs, including severance pay and other termination benefits, as well as other ancillary costs. These restructuring charges were recorded as Corporate costs and therefore excluded from the financial results of the reportable segment.

A summary of the restructuring charges is as follows:
Years Ended December 31,
(Millions of dollars)202520242023
Severance pay, related benefits and other costs$12.6 $— $— 
Total restructuring expense$12.6 $— $— 

A reconciliation of the changes in the restructuring liability, as of December 31, 2025, is as follows:

(Millions of dollars)
Balance as of December 31, 2024
$— 
Charges incurred during the period12.6 
Cash payments(7.0)
Changes in estimates and other adjustments— 
Balance as of December 31, 2025
$5.6 
v3.25.4
Schedule II - Valuation And Qualifying Accounts
 12 Months Ended
Dec. 31, 2025
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation And Qualifying Accounts
SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS
Murphy USA Inc.
Valuation Accounts and Reserves
 
(Millions of dollars)Balance at January 1,Charged (Credited) to ExpenseDeductionsBalance at December 31,
2025    
Deducted from assets accounts    
Allowance for doubtful accounts$0.3 0.1 (0.1)$0.3 
2024    
Deducted from assets accounts    
Allowance for doubtful accounts$1.3 (1.0)— $0.3 
2023    
Deducted from assets accounts    
Allowance for doubtful accounts$0.3 1.0 — $1.3 
v3.25.4
Insider Trading Arrangements
 3 Months Ended
Dec. 31, 2025
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.25.4
Insider Trading Policies and Procedures
 12 Months Ended
Dec. 31, 2025
Insider Trading Policies and Procedures [Line Items]  
Insider Trading Policies and Procedures Adopted true
v3.25.4
Cybersecurity Risk Management and Strategy Disclosure
 12 Months Ended
Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]  
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
We have implemented an information security program, which is overseen by our CIO and our CISO, that consists of controls designed to prevent, detect, and manage reasonably foreseeable cybersecurity risks and threats. Both our CIO and our CISO each have extensive experience assessing and managing cybersecurity programs and cybersecurity risk across a mix of public and large, private enterprises in the retail space. Our CISO has over 25 years of industry experience, including serving in similar roles leading and overseeing cybersecurity programs at other public companies. Leaders and team members who support our information security program have relevant education and industry experience, including various cybersecurity industry certifications.
Together with a third-party, we operate a 24/7 Security Operations Center ("SOC") to monitor the cybersecurity environment and coordinate escalation and remediation of alerts. Any identified incidents are documented and reviewed in accordance with the Company's Incident Response Plan. This Plan lays out the criteria for classification of risk associated with identified issues based on the potential impact and likelihood of a material, adverse impact on the business, financial condition, results of operations, cash flows or reputation. IT leadership initially reviews these incidents, and this information is shared with our Cyber Disclosure Committee, as required. The Cyber Disclosure Committee is comprised of the Company's VP & General Counsel, the CISO, and the VP, Interim CFO & Treasurer. The process requires that any incidents deemed to be potentially material under the Incident Response Plan are immediately escalated in accordance with the Plan to the CEO, other senior leaders of the organization, the Audit Committee Chair, and the full Board as appropriate to formalize the materiality assessment and apprise them of the situation.

We utilize a variety of methods performed both internally and by third parties to assess the Company's cyber risk management program including penetration tests, risk assessments and evaluation against the NIST CSF. The effectiveness of controls and safeguards are evaluated on an ongoing basis to address current and emerging cyber-risks. We engage an external auditor to conduct an annual Payment Card Industry Data Security Standard review of our security controls protecting payment information. Our Internal Audit function also regularly reviews various elements of our program utilizing third-party subject matter experts in IT and cyber issues to ensure we are complying with our internal controls and staying abreast of best practices in the industry. We incorporate many resources and tools on both an ad hoc and planned cadence to maintain readiness to withstand and respond to a cyber incident including incident response tabletop exercises, system recovery exercises, simulated phishing email exercises and security awareness training throughout the organization.

Murphy USA relies on numerous third parties to deliver the goods and services offered to our customers. We maintain a third-party risk management program to evaluate, prioritize, mitigate and remediate cybersecurity risks associated with third parties; however, we rely on those third parties to implement cybersecurity programs commensurate with their risk and we cannot ensure in all circumstances that their efforts will be successful. See Item 1A. "Risk Factors" for a discussion of cybersecurity risks. For the 2025 period presented within this Annual Report, Murphy USA is not aware of any threats or cybersecurity incidents that have or are reasonably likely to materially affect our strategy, results of operations or financial condition.
Cybersecurity Risk Management Processes Integrated [Flag] true
Cybersecurity Risk Management Processes Integrated [Text Block]
We have implemented an information security program, which is overseen by our CIO and our CISO, that consists of controls designed to prevent, detect, and manage reasonably foreseeable cybersecurity risks and threats. Both our CIO and our CISO each have extensive experience assessing and managing cybersecurity programs and cybersecurity risk across a mix of public and large, private enterprises in the retail space. Our CISO has over 25 years of industry experience, including serving in similar roles leading and overseeing cybersecurity programs at other public companies. Leaders and team members who support our information security program have relevant education and industry experience, including various cybersecurity industry certifications.
Together with a third-party, we operate a 24/7 Security Operations Center ("SOC") to monitor the cybersecurity environment and coordinate escalation and remediation of alerts. Any identified incidents are documented and reviewed in accordance with the Company's Incident Response Plan. This Plan lays out the criteria for classification of risk associated with identified issues based on the potential impact and likelihood of a material, adverse impact on the business, financial condition, results of operations, cash flows or reputation. IT leadership initially reviews these incidents, and this information is shared with our Cyber Disclosure Committee, as required. The Cyber Disclosure Committee is comprised of the Company's VP & General Counsel, the CISO, and the VP, Interim CFO & Treasurer. The process requires that any incidents deemed to be potentially material under the Incident Response Plan are immediately escalated in accordance with the Plan to the CEO, other senior leaders of the organization, the Audit Committee Chair, and the full Board as appropriate to formalize the materiality assessment and apprise them of the situation.
Cybersecurity Risk Management Third Party Engaged [Flag] true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] false
Cybersecurity Risk Board of Directors Oversight [Text Block]
The Board of Directors (the Board) exercises cybersecurity oversight and control both directly and indirectly. The Board has designated the Audit Committee as the governing committee for the oversight of Murphy USA’s major information technology risk exposures, including those related to cybersecurity, data privacy, and data security, and to oversee the steps management has taken to monitor and mitigate such risk exposures. The Audit Committee reviews cybersecurity risks through regular updates from management as needed with typically no fewer than two reports from management in a given annual reporting cycle, and it monitors the status of ongoing projects to enhance existing information security controls and practices and mitigate the potential risk from evolving cybersecurity threats.

While the Audit Committee is responsible for evaluating cyber-risks and overseeing the management of these risks, the entire Board is briefed periodically and considers cyber-risk within the context of enterprise risk facing the organization. Our cyber risk management program is based on recognized best practices for cybersecurity and information technology including the National Institute of Standards and Technology (“NIST”) Cybersecurity Framework (“CSF”) and Payment Card Industry Data Security Standard.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] The Board has designated the Audit Committee as the governing committee for the oversight of Murphy USA’s major information technology risk exposures, including those related to cybersecurity, data privacy, and data security, and to oversee the steps management has taken to monitor and mitigate such risk exposures.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] The Board has designated the Audit Committee as the governing committee for the oversight of Murphy USA’s major information technology risk exposures, including those related to cybersecurity, data privacy, and data security, and to oversee the steps management has taken to monitor and mitigate such risk exposures. The Audit Committee reviews cybersecurity risks through regular updates from management as needed with typically no fewer than two reports from management in a given annual reporting cycle, and it monitors the status of ongoing projects to enhance existing information security controls and practices and mitigate the potential risk from evolving cybersecurity threats.
Cybersecurity Risk Role of Management [Text Block]
While the Audit Committee is responsible for evaluating cyber-risks and overseeing the management of these risks, the entire Board is briefed periodically and considers cyber-risk within the context of enterprise risk facing the organization. Our cyber risk management program is based on recognized best practices for cybersecurity and information technology including the National Institute of Standards and Technology (“NIST”) Cybersecurity Framework (“CSF”) and Payment Card Industry Data Security Standard.
We have implemented an information security program, which is overseen by our CIO and our CISO, that consists of controls designed to prevent, detect, and manage reasonably foreseeable cybersecurity risks and threats.
Cybersecurity Risk Management Positions or Committees Responsible [Flag] true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block] We have implemented an information security program, which is overseen by our CIO and our CISO, that consists of controls designed to prevent, detect, and manage reasonably foreseeable cybersecurity risks and threats.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block] Both our CIO and our CISO each have extensive experience assessing and managing cybersecurity programs and cybersecurity risk across a mix of public and large, private enterprises in the retail space. Our CISO has over 25 years of industry experience, including serving in similar roles leading and overseeing cybersecurity programs at other public companies. Leaders and team members who support our information security program have relevant education and industry experience, including various cybersecurity industry certifications.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] Together with a third-party, we operate a 24/7 Security Operations Center ("SOC") to monitor the cybersecurity environment and coordinate escalation and remediation of alerts. Any identified incidents are documented and reviewed in accordance with the Company's Incident Response Plan. This Plan lays out the criteria for classification of risk associated with identified issues based on the potential impact and likelihood of a material, adverse impact on the business, financial condition, results of operations, cash flows or reputation. IT leadership initially reviews these incidents, and this information is shared with our Cyber Disclosure Committee, as required. The Cyber Disclosure Committee is comprised of the Company's VP & General Counsel, the CISO, and the VP, Interim CFO & Treasurer. The process requires that any incidents deemed to be potentially material under the Incident Response Plan are immediately escalated in accordance with the Plan to the CEO, other senior leaders of the organization, the Audit Committee Chair, and the full Board as appropriate to formalize the materiality assessment and apprise them of the situation.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] true
v3.25.4
Significant Accounting Policies (Policies)
 12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Adoption of New Accounting Pronouncement and Recent Accounting and Reporting Rules
Adoption of New Accounting Pronouncement

Effective January 1, 2025, the Company adopted ASU 2023-09, Improvements to Income Tax Disclosures, on a prospective basis. This update requires more detailed disclosures in the income tax note, including a standardized tabular rate reconciliation and disaggregated information on income taxes paid by jurisdiction. Since the guidance was adopted prospectively, the disclosures for the years ended December 31, 2024, and 2023, are presented under the previous accounting standard. The adoption of this ASU did not have an impact on the Company's consolidated financial position or results of operations, as it only affects disclosures.
Recent Accounting and Reporting Rules
In November 2024, the FASB issued ASU 2024-03, "Disaggregation of Income Statement Expenses." This ASU addresses investor requests for more granular information about an entity’s expenses, allowing investors to better understand performance, prospects for future cash flows, and comparability over time and with other entities. The primary goal is to improve the decision-usefulness of expense information on public companies’
income statements through disaggregation of relevant expense captions in the notes to the financial statements. The amendments in this update are effective for the Company for annual periods beginning after December 15, 2026, and interim periods in the year beginning after December 15, 2027. Early adoption is permitted. The amendments should be applied either prospectively or retrospectively. The Company is currently assessing the impact of the standard on the consolidated financial statements.

In July 2025, the FASB issued ASU 2025-05, "Financial Instruments—Measurement of Credit Losses for Accounts Receivable and Contract Assets." This ASU addresses challenges encountered when applying the guidance in Topic 326, Financial Instruments—Credit Losses, to current accounts receivable and current contract assets arising from transactions accounted for under Topic 606, Revenue from Contracts with Customers. The amendments in this update introduce a practical expedient for all entities, and an accounting policy election for entities other than public business entities. The amendments will be effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption is permitted. The Company does not expect for this to have a material impact on the consolidated financial statements.

In November 2025, the FASB issued ASU 2025-09, “Derivatives and Hedging (Topic 815)—Hedge Accounting Improvements.” This ASU is intended to more closely align financial reporting with the economics of some of an entity’s risk management activities. The changes are in response to stakeholder feedback from implementing ASU 2017-12 and the effects of LIBOR cessation. The main amendments relate to cash flow hedging, but some of the amendments affect certain fair value and net investment hedges. The amendments will be effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods within those annual reporting periods. Early adoption is permitted, and the amendments are to be applied prospectively. The Company is currently assessing the impact of the standard on the consolidated financial statements.

In December 2025, the FASB issued ASU 2025-11, "Interim Reporting (Topic 270)—Narrow-Scope Improvements". This ASU clarifies the interim reporting requirements by improving navigability of Topic 270 and more clearly specifying what disclosures are required in an interim reporting period. It is not intended to significantly change interim reporting or expand or reduce interim disclosure requirements. The amendments will be effective for interim reporting periods beginning after December 15, 2027. Early adoption is permitted, and the amendments may be applied either prospectively or retrospectively. The Company is currently evaluating the impact of the standard on the consolidated financial statements and does not expect the adoption to have a material impact.
Principles of Consolidation
PRINCIPLES OF CONSOLIDATION – These consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and include the accounts of Murphy USA Inc. and its subsidiaries for all periods presented. All significant intercompany accounts and transactions within the consolidated financial statements have been eliminated.
Revenue Recognition, Shipping and Handling cost and Vendor Allowances and Rebates
REVENUE RECOGNITION – Revenue is recognized when obligations under the terms of a contract with our customers are satisfied; generally, this occurs with the transfer of control of our petroleum products, convenience merchandise, Renewable Identification Numbers ("RINs") and other assets to our third-party customers. Revenue is measured as the amounts of consideration we expect to receive in exchange for transferring goods or providing services. Excise and sales taxes that we collect where we have determined we are the principal in the transaction have been recorded as revenue on a jurisdiction-by-jurisdiction basis.
 
The Company enters into buy/sell and similar arrangements when petroleum products are held at one location but are needed at a different location. The Company often pays or receives funds related to the buy/sell
arrangement based on location or quality differences. The Company accounts for such transactions as non-monetary exchanges under existing accounting guidance and typically reports these on a net basis in its Consolidated Statements of Income. See Note 3 "Revenues" for additional information.
 
SHIPPING AND HANDLING COSTS – Costs incurred for the shipping and handling of motor fuel are included in Petroleum product cost of goods sold in the Consolidated Statements of Income. Costs incurred for the shipping and handling of convenience store merchandise are included in Merchandise cost of goods sold in the Consolidated Statements of Income.
VENDOR ALLOWANCES AND REBATES – Murphy USA receives payments for vendor allowances, volume rebates and other related payments from various suppliers of its convenience store merchandise. Vendor allowances for price markdowns are credited to merchandise cost of goods sold during the period the related markdown is recognized. Volume rebates of merchandise are recorded as reductions to merchandise cost of goods sold when the merchandise qualifying for the rebate is sold. Slotting and stocking allowances received from a vendor are recorded as a reduction to cost of sales over the period covered by the agreement.
Petroleum product sales (at retail). For our retail store locations, the revenue related to petroleum product sales is recognized as the fuel is pumped to our customers. The transaction price at the pump typically includes some portion of sales or excise taxes as levied in the respective jurisdictions. Those taxes that are collected for remittance to governmental entities on a pass-through basis are not recognized as revenue and they are recorded to a liability account until they are paid. Our customers typically use a mixture of cash, checks, credit cards and debit cards to pay for our products as they are received. We have accounts receivable from the various credit/debit card providers at any point in time related to product sales made on credit cards and debit cards. These receivables are typically collected in two to seven days, depending on the terms with the particular credit/debit card providers. Payment fees retained by the credit/debit card providers are recorded as Store and other operating expenses in the Consolidated Statements of Income.

Petroleum product sales (at wholesale). Our sales of petroleum products at wholesale are generally recorded as revenue when the deliveries have occurred and legal ownership of the product has transferred to the customer. Title transfer for bulk refined product sales typically occurs at pipeline custody points and upon
trucks loading at product terminals. For bulk pipeline sales, we record receivables from customers that are generally collected within a week from custody transfer date. For our rack product sales, the majority of our customers' accounts are drafted by us within 10 days from product transfer.

Merchandise sales. For our retail store locations, the revenue related to merchandise sales is recognized as the customer completes their purchase at our locations. The transaction price typically includes some portion of sales tax as levied in the respective jurisdictions. Those taxes that are collected for remittance to governmental entities on a pass-through basis are not recognized as revenue and they are recorded to a liability account until they are paid. As noted above, a mixture of payment types are used for these revenues and the same terms for credit/debit card receivables are realized.

With respect to merchandise sales revenue we must determine whether we are the principal or agent for some categories of merchandise such as scratch-off lottery tickets, lotto tickets, newspapers and other small categories of merchandise. For scratch-off lottery tickets, we have determined we are the principal in the majority of the jurisdictions and therefore we record those sales on a gross basis. We have some categories of merchandise (such as lotto tickets) where we are the agent and the revenues recorded for those transactions are our net commission only.

The Company offers loyalty programs through each of its branded retail locations. The customers earn rewards based on their spending or other promotional activities. These programs create a performance obligation which requires us to defer a portion of sales revenue to the loyalty program participants until they redeem their rewards. The rewards may be redeemed for free or discounted merchandise or cash discounts at all stores and on fuel purchases at Murphy branded stores. Earned rewards expire after an account is inactive for a period of 90 days at Murphy branded stores, while certain QC rewards require use within the month. We recognize loyalty revenue when a customer redeems an earned reward. Deferred revenue associated with both loyalty programs are included in Trade accounts payable and accrued liabilities in our Consolidated Balance Sheets. The deferred revenue balances at December 31, 2025 and 2024 were immaterial.

RINs sales. For the sale of RINs, we recognize revenue when the RIN is transferred to the counter-party and the sale is completed. Receivables from our counter-parties related to the RIN sales are typically collected within five days of the sale.

Other revenues. Items reported as other operating revenues include collection allowances for excise and sales taxes and other miscellaneous items and are recognized as revenue when the transaction is completed.
Taxes Collected from Customers and Remitted to Government Authorities TAXES COLLECTED FROM CUSTOMERS AND REMITTED TO GOVERNMENTAL AUTHORITIES – Excise and other taxes collected on sales of refined products and remitted to governmental agencies are included in Operating Revenues and Operating Expenses in the Consolidated Statements of Income.
Cash Equivalents
CASH EQUIVALENTS – Short-term investments, which include governmental securities, money market funds and other instruments with governmental securities as collateral, that have a maturity of three months or less from the date of purchase are classified as cash equivalents.
Marketable Securities
MARKETABLE SECURITIES – The Company considers highly liquid treasury notes, corporate debt securities, and other funds with original maturities of more than three months to be marketable securities. Securities with less than one year to maturity are included in short-term marketable securities, and all other securities are classified as long-term marketable securities. Marketable securities are classified as held-to-maturity when the Company has both the positive intent and ability to hold the securities to maturity and are carried at amortized cost. Marketable securities are classified as available-for-sale when the Company does not have the intent to hold securities to maturity to allow flexibility in response to liquidity needs and are carried at fair value. The Company records securities at fair value on its consolidated balance sheets, with unrealized gains and losses reported as a component of accumulated other comprehensive income (loss). See Note 5 "Marketable Securities" and Note 17 "Assets and Liabilities Measured at Fair Value" for additional information on our policy and the fair value measurement of the Company's marketable securities.
Accounts Receivable
ACCOUNTS RECEIVABLE – The Company’s accounts receivable are recorded at the invoiced amount and do not bear interest. The accounts receivable primarily consists of amounts owed to the Company from credit card companies and by customers for wholesale sales of refined petroleum products. The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses on these receivables. The Company reviews this allowance for adequacy at least quarterly and bases its assessment on a combination of current information about its customers and historical write-off experience. Any trade accounts receivable balances written off are charged against the allowance for doubtful accounts. The Company has not experienced any significant credit-related losses in the past three years.
Inventories INVENTORIES – Inventories of petroleum products are valued at the lower of cost, generally applied on a last-in, first-out (“LIFO”) basis, or market. Any increments to LIFO inventory volumes are valued based on the first purchase price for these volumes during the year. Merchandise inventories held for resale are generally valued at average cost. Materials and supplies are valued at the lower of average cost or net realizable value.
Business Combinations
BUSINESS COMBINATIONS – The Company accounts for business combinations under the purchase method of accounting. The purchase price of an acquisition is measured as the aggregate of the fair value of the consideration transferred. The purchase price is allocated to the fair values of the tangible and intangible assets acquired and liabilities assumed, with any excess recorded as goodwill. These fair value determinations
require judgment and may involve the use of significant estimates and assumptions. The purchase price allocation may be provisional during a measurement period of up to one year to provide reasonable time to obtain the information necessary to identify and measure the assets acquired and liabilities assumed. Any such measurement period adjustments are recognized in the period in which the adjustment amount is determined. Transaction costs associated with the acquisition are expensed as incurred.
Property, Plant and Equipment
PROPERTY, PLANT AND EQUIPMENT – Additions to property, plant and equipment, including renewals and betterments, are capitalized and recorded at cost. Certain marketing facilities are primarily depreciated using the composite straight-line method with depreciable lives ranging from 3 to 25 years. Gasoline stores, improvements to gasoline stores and other assets are depreciated over 3 to 50 years by individual unit on the straight-line method. The Company capitalizes interest costs as a component of construction in progress on individually significant projects based on the weighted-average interest rates incurred on its long-term borrowings. Total interest cost capitalized was $4.4 million in 2025, $4.2 million in 2024 and $2.4 million in 2023.
The Company has undertaken like-kind exchange ("LKE") transactions under the federal tax code in an effort to acquire and sell real property in a tax-efficient manner. The Company generally enters into forward transactions, in which property is sold and the proceeds are reinvested by acquiring similar property; and reverse transactions, in which property is acquired and similar property is subsequently sold. A qualified LKE intermediary is used to facilitate these LKE transactions. Proceeds from forward LKE transactions are held by the intermediary and are classified as restricted cash on the Company's balance sheet because the funds must be reinvested in similar properties. If the acquisition of suitable LKE properties is not completed within 180 days of the sale of the Company-owned property, the proceeds are distributed to the Company by the intermediary and are reclassified as available cash and applicable income taxes are determined. An exchange accommodation titleholder, a type of variable interest entity, is used to facilitate reverse like-kind exchanges. The acquired assets are held by the exchange accommodation titleholder until the exchange transactions are complete. If the Company determines that it is the primary beneficiary of the exchange accommodation titleholder, the replacement assets held by the exchange accommodation titleholder are consolidated and recorded in Property, Plant and Equipment on the Consolidated Balance Sheets. The unspent proceeds that are held in trust with the intermediary are recorded as noncurrent assets in the Consolidated Balance Sheet as the cash was restricted for the acquisition of similar properties.
Goodwill and Intangible Assets GOODWILL AND INTANGIBLE ASSETS – Goodwill represents the excess of the aggregate of the consideration transferred over the net assets acquired and liabilities assumed and is tested annually for impairment, or more frequently if there are indicators of potential impairment. Acquired finite-lived intangible assets are amortized on a straight-line basis over their estimated useful lives, and are reviewed for impairment when events or circumstances indicate that the asset group to which the intangible assets belong might be impaired. The Company revises the estimated remaining useful life of these assets when events or changes in circumstances warrant a revision. If the Company revises the useful life, the unamortized balance is amortized over the useful life on a prospective basis.
Impairment of Assets
IMPAIRMENT OF ASSETS – Long-lived assets, which include property and equipment and finite-lived assets, are tested for recoverability whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. Indefinite-lived intangible assets are tested annually. A long-lived asset is not recoverable if its carrying amount exceeds the sum of the undiscounted cash flows expected to result from its use and eventual disposition. If a long-lived asset is not recoverable, an impairment loss is recognized for the amount by which the carrying amount of the long-lived asset exceeds its fair value, with fair value determined based on discounted estimated net cash flows or other appropriate methods. In 2025, the Company recognized impairment charges of $5.3 million, $8.2 million in 2024, and no impairment charges in 2023.
Asset Retirement Obligations
ASSET RETIREMENT OBLIGATIONS – The Company records a liability for asset retirement obligations (“ARO”) equal to the fair value of the estimated cost to retire an asset. The ARO liability is initially recorded in the period in which the obligation meets the definition of a liability, which is generally when the asset is placed in service. The ARO liability is estimated using existing regulatory requirements and anticipated future inflation
rates. When the liability is initially recorded, the Company increases the carrying amount of the related long-lived asset by an amount equal to the original liability. The liability is increased over time to reflect the change in its present value, and the capitalized cost is depreciated over the useful life of the related long-lived asset. The Company reevaluates the adequacy of its recorded ARO liability at least annually. Actual costs of asset retirements such as dismantling service stores and site restoration are charged against the related liability. Any difference between costs incurred upon settlement of an asset retirement obligation and the recorded liability is recognized as a gain or loss in the Company’s Consolidated Statements of Income.
Environmental Liabilities
ENVIRONMENTAL LIABILITIES – A liability for environmental matters is established when it is probable that an environmental obligation exists and the cost can be reasonably estimated. If there is a range of reasonably estimated costs, the most likely amount will be recorded, or if no amount is most likely, the minimum of the range is used. Related expenditures are charged against the liability. Environmental remediation liabilities have not been discounted for the time value of future expected payments. Environmental expenditures that have future economic benefit are capitalized.
Income Taxes
INCOME TAXES – The Company accounts for income taxes using the asset and liability method. Under this method, income taxes are provided for amounts currently payable and for amounts deferred as tax assets and liabilities based on differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities. Deferred income taxes are measured using the enacted tax rates that are assumed will be in effect when the differences reverse. The Company routinely assesses the realizability of deferred tax assets based on available positive and negative evidence including assumptions of future taxable income, tax planning strategies and other pertinent factors.  A deferred tax asset valuation allowance is recorded when evidence indicates that it is more likely than not that all or a portion of these deferred tax assets will not be realized in a future period.  The accounting principles for income tax uncertainties permit recognition of income tax benefits only when they are more likely than not to be realized.  
The Company has elected to classify any interest expense and penalties related to the underpayment of income taxes in Income tax expense in the Consolidated Statements of Income.
Derivative Instruments and Hedging Activities
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES – The fair value of a derivative instrument is recognized as an asset or liability in the Company’s Consolidated Balance Sheets. Upon entering into a derivative contract, the Company may designate the derivative as either a fair value hedge or a cash flow hedge, or decide that the contract is not a hedge, and therefore, recognize changes in the fair value of the contract in earnings. The Company documents the relationship between the derivative instrument designated as a hedge and the hedged items as well as its objective for risk management and strategy for use of the hedging instrument to manage the risk. Derivative instruments designated as fair value or cash flow hedges are linked to specific assets and liabilities or to specific firm commitments or forecasted transactions. The Company assesses at inception and on an ongoing basis whether a derivative instrument accounted for as a hedge is highly effective in offsetting changes in the fair value or cash flows of the hedged item. A derivative that is not a highly effective hedge does not qualify for hedge accounting. The change in the fair value of a qualifying fair value hedge is recorded in earnings along with the gain or loss on the hedged item. The effective portion of the change in the fair value of a qualifying cash flow hedge is recorded in Accumulated other comprehensive income (AOCI) in the Consolidated Balance Sheets until the hedged item is recognized currently in earnings. If a derivative instrument no longer qualifies as a cash flow hedge and the underlying forecasted transaction is no longer probable of occurring, hedge accounting is discontinued and the gain or loss recorded in AOCI is recognized immediately in earnings. If a hedge is de-designated, hedge accounting will no longer apply and from that time the gain and losses will be recognized in earnings and any accumulated amounts in other comprehensive income will be amortized to earnings over the remaining life of the underlying instrument. See Note 14 "Financial Instruments and Risk Management" and Note 17 "Assets and Liabilities Measured at Fair Value" for further information about the Company’s derivatives.
DERIVATIVE INSTRUMENTS — The Company makes limited use of derivative instruments to manage certain risks related to commodity prices and interest rates. The use of derivative instruments for risk management is covered by operating policies and is closely monitored by the Company’s senior management. The Company does not hold any derivatives for speculative purposes, and it does not use derivatives with leveraged or complex features. Derivative instruments are traded primarily with creditworthy major financial institutions or over national exchanges such as the New York Mercantile Exchange (“NYMEX”). For accounting purposes, the Company has not designated commodity derivative contracts as hedges, and therefore, it recognizes all gains and losses on these derivative contracts in its Consolidated Statement of Income. Certain interest rate derivative contracts were accounted for as hedges and gain or loss associated with recording the fair value of these contracts was deferred in AOCI until the anticipated transactions occurred.
Stock-Based Compensation
STOCK-BASED COMPENSATION – The fair value of awarded stock options, restricted stock, restricted stock units and performance stock units is determined based on a combination of management assumptions for awards issued. The Company uses the Black-Scholes option pricing model for computing the fair value of stock options. The primary assumptions made by management included the expected life of the stock option award and the expected volatility of the Company’s common stock prices. The Company uses both historical data and current information to support its assumptions. Stock option expense is recognized on a straight-line basis over
the requisite service period of three years. The Company uses a Monte Carlo valuation model to determine the fair value of performance-based stock units that are based on performance compared against a peer group and the related expense is recognized over the three-year requisite service period. Management estimates the number of all awards that will not vest and adjusts its compensation expense accordingly. Differences between estimated and actual vested amounts are accounted for as an adjustment to expense when known. See Note 12 "Incentive Plans" for a discussion of the basis of allocation of such costs.
Use of Estimates USE OF ESTIMATES – In preparing the financial statements of the Company in conformity with U.S. GAAP, management has made a number of estimates and assumptions related to the reporting of assets, liabilities, revenues, and expenses and the disclosure of contingent assets and liabilities. Actual results may differ from the estimates. On an ongoing basis, we review our estimates based on currently available information. Changes in facts and circumstances may result in revised estimates.
Lease Accounting Lease Accounting
The Company determines if an arrangement is a lease or contains a lease at inception. Operating lease right-of-use assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Leases with an initial term of 12 months or less are not recorded on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term. The
Company's leases have remaining lease terms of approximately 1 years or less to 34 years, which may include the option to extend the lease when it is reasonably certain the Company will exercise the option. Most leases include one or more options to renew, with renewal terms that can extend the lease term from 5 to 20 years or more. The exercise of lease renewal options is at the Company's sole discretion. Due to the uncertainties of future markets, economic factors, technology changes, demographic shifts and behavior, environmental regulatory requirements and other information that impacts decisions as to store location, management has determined that it was not reasonably certain to exercise contract options and they are not included in the lease term. Additionally, short-term leases and leases with variable lease costs are immaterial. The Company reviews all options to extend, terminate, or otherwise modify its lease agreements to determine if changes are required to the right-of-use assets and liabilities.

As the implicit interest rate is not readily determinable in most of the Company's lease agreements, the Company uses its estimated secured incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments.

Lessor — We have various arrangements for certain spaces for food service and vending equipment under which we are the lessor. These leases meet the criteria for operating lease classification. Lease income associated with these leases is immaterial. We also have certain areas where we sublease building and land space to others. This lease income is immaterial.

Lessee — We lease land for 481 stores, one terminal, and various equipment. Our lease agreements do not contain any material residual value guarantees and approximately 103 sites leased from Walmart contain restrictive covenants, though the restrictions are deemed to have an immaterial impact.
v3.25.4
Revenues (Tables)
 12 Months Ended
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
The following table disaggregates our revenue by major source for the years ended December 31, 2025, 2024, and 2023.
Years Ended December 31,
(Millions of dollars)202520242023
Marketing Segment
Petroleum product sales (at retail)1
$13,397.7 $14,417.5 $15,279.9 
Petroleum product sales (at wholesale)1
1,465.1 1,474.3 1,824.5 
Total petroleum product sales14,862.8 15,891.8 17,104.4 
Merchandise sales4,303.8 4,214.8 4,089.3 
Other operating revenues:
RINs211.7 129.6 328.6 
Other revenues2
5.2 7.5 6.6 
Total Marketing segment revenues19,383.5 20,243.7 21,528.9 
Corporate and Other Assets 0.5 0.6 0.5 
Total revenues$19,384.0 $20,244.3 $21,529.4 
1Includes excise and sales taxes that remain eligible for inclusion under Topic 606
2Primarily includes collection allowance on excise and sales taxes combined with other miscellaneous items
v3.25.4
Inventories (Tables)
 12 Months Ended
Dec. 31, 2025
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories consisted of the following:
December 31,
(Millions of dollars)20252024
Petroleum products - FIFO basis$305.8 $353.3 
Store merchandise for resale - FIFO basis 254.7 226.5 
Less LIFO reserve (162.6)(189.1)
Total petroleum products and store merchandise inventory397.9 390.7 
Materials and supplies15.1 10.9 
Total inventories$413.0 $401.6 
v3.25.4
Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment
  December 31, 2025December 31, 2024
(Millions of dollars)Estimated Useful LifeCostNetCostNet
Land $709.4 $709.4 $674.6 $674.6 
Real estate finance leases
1 to 40 years
155.0 93.0 150.9 100.8 
Pipeline and terminal facilities
3 to 25 years
105.9 59.8 99.2 57.1 
Retail gasoline stores
3 to 50 years
3,823.4 1,953.9 3,498.7 1,826.3 
Buildings
20 to 45 years
75.7 40.6 75.4 43.8 
Other
3 to 20 years
266.9 106.1 245.8 110.6 
  $5,136.3 $2,962.8 $4,744.6 $2,813.2 
v3.25.4
Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
December 31,
(Millions of dollars)20252024
Goodwill$328.0 $328.0 
Schedule of Intangible Assets
Intangible assets subject to amortization at December 31, 2025 and 2024 consisted of the following:

Remaining Useful Life (in years)December 31, 2025December 31, 2024
(Millions of dollars)CostNetCostNet
Intangible assets subject to amortization:
Pipeline space29.7$39.6 $29.7 $39.6 $30.7 
Intangible lease liability8.6(9.1)(5.8)(9.1)(6.6)
Total intangible assets subject to amortization30.5 23.9 30.5 24.1 
Intangible assets not subject to amortization, indefinite lives:
Trade name115.4 115.4 115.4 115.4 
Intangible assets, net of amortization$145.9 $139.3 $145.9 $139.5 
v3.25.4
Accounts Payable And Accrued Liabilities (Tables)
 12 Months Ended
Dec. 31, 2025
Payables and Accruals [Abstract]  
Schedule of Accounts Payable and Accrued Liabilities
Trade accounts payable and accrued liabilities consisted of the following:
 December 31,
(Millions of dollars)20252024
Trade accounts payable$477.5 $518.0 
Excise taxes/withholdings payable106.1 99.7 
Accrued insurance obligations68.3 59.7 
Accrued taxes other than income49.7 43.2 
Accrued compensation and benefits58.5 39.9 
Accrued capital expenditures38.5 55.1 
Current operating lease liabilities25.8 23.7 
Other40.8 35.1 
Accounts payable and accrued liabilities$865.2 $874.4 
v3.25.4
Long-Term Debt (Tables)
 12 Months Ended
Dec. 31, 2025
Debt Disclosure [Abstract]  
Schedule of Long-Term Debt
Long-term debt consisted of the following:
 December 31,
(Millions of dollars)20252024
5.625% senior notes due 2027 (net of unamortized discount of $0.5 at 2025 and $0.9 at 2024)
$299.5 $299.1 
4.75% senior notes due 2029 (net of unamortized discount of $2.3 at 2025 and $3.0 at 2024)
497.7 497.0 
3.75% senior notes due 2031 (net of unamortized discount of $3.2 at 2025 and $3.8 at 2024)
496.8 496.2 
Term loan due 2028 (effective interest rate of n/a at 2025 and 6.44% at 2024)
— 385.6 
Term loan due 2032 (effective interest rate of 5.61% at 2025) net of unamortized discount of $1.0 at 2025
599.0 — 
Revolving credit facility, due 2030 (weighted-average interest rate of 5.88% at December 31, 2025)
183.0 56.0 
Capitalized lease obligations, autos and equipment, due through 2030
7.7 3.2 
Capitalized lease obligations, buildings, due through 2059
110.8 116.5 
Unamortized debt issuance costs(11.9)(5.2)
Total long-term debt2,182.6 1,848.4 
Less current maturities19.0 15.7 
Total long-term debt, net of current$2,163.6 $1,832.7 
v3.25.4
Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2025
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Reconciliation of ARO
A reconciliation of the beginning and ending aggregate carrying amount of the ARO is shown in the following table:
 December 31,
(Millions of dollars)20252024
Balance at beginning of period$49.1 $46.1 
Accretion expense3.4 3.2 
Settlement of liabilities(1.0)(3.1)
Liabilities incurred1.0 2.9 
Balance at end of period$52.5 $49.1 
v3.25.4
Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2025
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Before Income Taxes And Income Tax Expense (Benefit)
The components of income (loss) before income taxes for each of the three years ended December 31, 2025 and income tax expense (benefit) attributable thereto are as follows:

 Years Ended December 31,
(Millions of dollars)202520242023
Income (loss) before income taxes$609.2 $651.6 $734.4 
Income tax expense (benefit)   
Federal - Current$70.1 $115.5 $141.5 
Federal - Deferred48.4 11.8 3.5 
State - Current and deferred20.1 21.8 32.6 
Total income tax expense (benefit)$138.6 $149.1 $177.6 
Schedule of Reconciliation of Income Taxes Expense (Benefit) to Statutory Rate
The following table reconciles the Company income tax expense (benefit) based on the U.S. statutory tax rate to the income tax expense (benefit) for the year ended December 31, 2025, after the adoption of ASU 2023-09.

(Millions of dollars)AmountPercent
Income tax expense (benefit) based on the U.S. statutory tax rate$127.9 21.0 %
Domestic federal
Tax Credits(8.0)(1.3)%
Nontaxable and nondeductible items2.0 0.3 %
Other reconciling items0.2 — %
Domestic state and local income taxes, net of federal effect16.5 2.8 %
Total income tax expense (benefit)$138.6 22.8 %
The following table reconciles income taxes based on the U.S. statutory tax rate to the Company’s income tax expense (benefit) for the years ended December 31, 2024 and 2023, prior to the adoption of ASU 2023-09.

 Years Ended December 31,
(Millions of dollars)20242023
Income tax expense based on the U.S. statutory tax rate$136.8 $154.2 
State income taxes, net of federal benefit17.3 25.0 
Federal credits(2.5)(2.6)
Other, net(2.5)1.0 
Total$149.1 $177.6 
Schedule of Cash Income Tax, Net of Refunds
Cash income taxes paid, net of refunds, for the year ended December, 31, 2025, was as follows:

(Millions of dollars)Amount
US federal$86.0 
US state and local15.0 
Total$101.0 
Schedule of Deferred Tax Assets and Deferred Tax Liabilities
An analysis of the Company’s deferred tax assets and deferred tax liabilities at December 31, 2025 and 2024 showing the tax effects of significant temporary differences is as follows:

 December 31,
(Millions of dollars)20252024
Deferred tax assets  
Property costs and asset retirement obligations$8.1 $7.3 
Employee benefits12.4 11.7 
Operating leases liability117.7 109.2 
Other deferred tax assets15.0 15.9 
Total gross deferred tax assets153.2 144.1 
Deferred tax liabilities  
Accumulated depreciation and amortization(383.0)(344.5)
State deferred taxes(28.6)(31.2)
Operating leases right-of-use assets(110.5)(103.5)
Other deferred tax liabilities(19.6)(8.3)
Total gross deferred tax liabilities(541.7)(487.5)
Net deferred tax liabilities$(388.5)$(343.4)
Schedule of Reconciliation of Beginning and Ending Liability for Uncertain Tax Positions
A reconciliation of the beginning and ending amount of the consolidated liability for unrecognized income tax benefits during the year ended December 31, 2025 and 2024 is shown in the following table:

 Years Ended December 31,
(Millions of dollars)20252024
Balance at January 1$— $0.5 
Additions for tax positions related to prior years— — 
Expiration of statutes of limitation— (0.5)
Balance at December 31$— $— 
v3.25.4
Incentive Plans (Tables)
 12 Months Ended
Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Valuation Assumptions
Following are the assumptions used by the Company to value the original awards:

 Years Ended December 31,
 202520242023
Fair value per option grant$154.07 $133.91 $88.53 
Assumptions   
Dividend yield0.4%0.4%0.5%
Expected volatility27.9%32.9%33.1%
Risk-free interest rate4.5%4.3%3.8%
Expected life (years)4.84.84.9
Stock price at valuation date$492.22 $391.54 $263.48 
Schedule of Changes in Stock Options Outstanding
Changes in options outstanding for Company employees during the period from December 31, 2024 to December 31, 2025 are presented in the following table:
OptionsNumber of SharesWeighted-Average Exercise PriceWeighted-Average Remaining Contractual
Term (Years)		Aggregate Intrinsic Value (Millions of Dollars)
Outstanding at December 31, 2024259,750 $180.68 
Granted 28,900 $492.22 
Exercised(36,200)$99.28 
Forfeited(7,350)$410.81 
Outstanding at December 31, 2025245,100 $222.54 3.1$46.7 
Exercisable at December 31, 2025172,790 $148.96 2.2$44.0 
Schedule of Additional Stock Option Information
Additional information about stock options outstanding at December 31, 2025 is shown below:

 Options OutstandingOptions Exercisable
Range of Exercise Prices per OptionNo. of OptionsAvg. Life Remaining in YearsNo. of OptionsAvg. Life Remaining in Years
$0.00to$99.998,600 0.28,600 0.2
$100.00to$149.9998,140 1.698,140 1.6
$150.00to$249.9947,900 3.047,900 3.0
$250.00to$349.9934,550 3.917,750 3.7
$350.00to$449.9929,710 5.1400 1.2
$450.00&Above26,200 6.1— —
 245,100 3.1172,790 2.2
Schedule of Restricted Stock Unit Activity
Changes in RSUs outstanding during the period from December 31, 2024 to December 31, 2025 are presented in the following table:

RSUsNumber of UnitsWeighted-Average Grant Date Fair ValueTotal Fair Value (Millions of Dollars)
Outstanding at December 31, 202498,214 $285.60 
Granted29,467 $462.80 
Vested and issued(38,968)$212.35 $17.9 
Forfeited(6,798)$386.91 
Outstanding at December 31, 202581,915 $376.60 $33.1 
Changes in PSUs outstanding for Company employees during the period from December 31, 2024 to December 31, 2025 are presented in the following table:

Employee PSUsNumber of UnitsWeighted-Average Grant Date Fair ValueTotal Fair Value (Millions of Dollars)
Outstanding at December 31, 202477,395 $320.05 
Granted49,371 $583.25 
Vested and issued(61,288)$221.39 $29.7 
Forfeited(5,874)$466.58 
Outstanding at December 31, 202559,604 $438.28 $24.1 
Changes in Director RSUs outstanding for Company non-employee directors during the period from December 31, 2024 to December 31, 2025 are presented in the following table:

2013 Plan — Director RSUsNumber of UnitsWeighted-Average Grant Date Fair ValueTotal Fair Value (Millions of Dollars)
Outstanding at December 31, 20249,436 $196.38 
Granted 12 $406.93 
Vested and issued(7,174)$175.84 $3.5 
Outstanding at December 31, 20252,274 $261.51 $0.9 
Schedule of Amounts Recognized in Financial Statements with Respect to Share-Based Plans
Amounts recognized in the financial statements by the Company with respect to all share-based compensation plans are shown in the following table:
 
 Years Ended December 31,
(Millions of dollars)202520242023
Compensation charged against income before income tax benefit$28.6 $22.9 $21.8 
Related income tax benefit recognized in income$6.0 $4.8 $4.6 
v3.25.4
Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2025
Earnings Per Share [Abstract]  
Schedule of Reconciliation of Basic and Diluted Earnings Per Share Computations
The following table provides a reconciliation of basic and diluted earnings per share computations for the years ended December 31, 2025, 2024 and 2023.

 Years ended December 31,
(Millions of dollars, except share and per share amounts)202520242023
Earnings per common share:   
Net income per share - basic
Net income attributable to common stockholders$470.6 $502.5 $556.8 
Weighted-average common shares outstanding (in thousands)19,303 20,533 21,493 
Earnings per common share$24.38 $24.47 $25.91 
Earnings per common share - assuming dilution:
Net income per share - diluted
Net income attributable to common stockholders$470.6 $502.5 $556.8 
Weighted-average common shares outstanding (in thousands)19,303 20,533 21,493 
Common equivalent shares:   
Share-based awards223 309 350 
Weighted-average common shares outstanding - assuming dilution (in thousands)19,526 20,842 21,843 
Earnings per common share assuming dilution$24.10 $24.11 $25.49 
Schedule of Potentially Dilutive Shares Excluded from Earnings Per Share
We have excluded from the earnings-per-share calculation certain stock options and shares that are considered to be anti-dilutive under the treasury stock method and are reported in the table below.
Years ended December 31,
Potentially dilutive shares excluded from the calculation as their inclusion would be anti-dilutive202520242023
Stock Options56,391 28,929 34,133 
RSUs7,429 13 44 
PSUs— 452 — 
Total anti-dilutive shares63,820 29,394 34,177 
v3.25.4
Other Financial Information (Tables)
 12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Changes in Working Capital
CHANGES IN WORKING CAPITAL:
Years ended December 31,
(Millions of dollars)202520242023
Accounts receivable$(8.1)$65.4 $(56.3)
Inventories(11.4)(60.2)(22.1)
Prepaid expenses and other current assets3.6 (3.1)25.2 
Accounts payable and accrued liabilities(4.3)(3.9)(12.0)
Income taxes payable(12.9)34.6 23.1 
Net (increase) decrease in noncash operating
working capital		$(33.1)$32.8 $(42.1)
v3.25.4
Assets and Liabilities Measured at Fair Value (Tables)
 12 Months Ended
Dec. 31, 2025
Fair Value Disclosures [Abstract]  
Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following table presents the Company's financial assets and liabilities measured at fair value on a recurring basis, as of December 31, 2025 and 2024:

 December 31, 2025
(Millions of dollars)Level 1Level 2Level 3Fair Value
Financial assets
Prepaid expenses and other current assets
Fuel derivative$— $— $— $— 
Other assets
Deferred compensation plan assets18.6 — — 18.6 
 December 31, 2025
(Millions of dollars)Level 1Level 2Level 3Fair Value
Financial liabilities
Deferred credits and other liabilities
Deferred compensation plan liabilities(26.7)— — (26.7)
$(8.1)$— $— $(8.1)

December 31, 2024
(Millions of dollars)Level 1Level 2Level 3Fair Value
Financial assets
Prepaid expenses and other current assets
Fuel derivative— — 0.2 0.2 
Other assets
Deferred compensation plan assets14.9 — — 14.9 
Financial liabilities
Deferred credits and other liabilities
Deferred compensation plan liabilities(26.3)— — (26.3)
$(11.4)$— $0.2 $(11.2)
Schedule of Carrying Amounts and Estimated Fair Value of Financial Instruments
The following table presents the carrying amounts and estimated fair values of financial instruments held by the Company at December 31, 2025 and 2024.

 December 31, 2025December 31, 2024
 CarryingLevel 2CarryingLevel 2
(Millions of dollars)AmountFair ValueAmountFair Value
Financial liabilities    
Current and long-term debt, excluding finance leases$(2,064.1)$(2,081.2)$(1,728.7)$(1,717.5)
v3.25.4
Lease Accounting (Tables)
 12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Schedule of Leases Reflected on Balance Sheet
Leases are reflected in the following balance sheet accounts:

(Millions of dollars)ClassificationDecember 31,
2025		December 31,
2024
Assets
Operating (Right-of-use)Operating lease right-of-use assets, net$526.3 $492.9 
Finance
Property, plant, and equipment, at cost, less accumulated depreciation of $69.0 in 2025
and $56.3 in 2024
100.2 103.9 
Total leased assets$626.5 $596.8 
Liabilities
Current
OperatingTrade accounts payable and accrued liabilities$25.8 $23.7 
FinanceCurrent maturities of long-term debt 13.0 11.7 
Noncurrent
OperatingNon-current operating lease liabilities534.6 496.3 
FinanceLong-term debt, including capitalized lease obligations105.5 108.0 
Total lease liabilities$678.9 $639.7 
Schedule of Lease Cost, Cash flow Information, Lease Term and Discount Rate
Lease Cost:Years Ended December 31,
(Millions of dollars)Classification202520242023
Operating lease costStore and other operating expenses$66.7 $59.6 $55.1 
Finance lease cost
Amortization of leased
assets		Depreciation & amortization expense14.6 14.6 15.0 
Interest on lease liabilitiesInterest expense8.0 8.3 8.9 
Net lease costs$89.3 $82.5 $79.0 

Cash Flow Information:Years Ended December 31,
(Millions of dollars)202520242023
Cash paid for amounts included in the measurement of liabilities
   Operating cash flows required by operating leases$61.0 $53.8 $50.6 
   Operating cash flows required by finance leases$8.0 $8.3 $8.9 
   Financing cash flows required by finance leases$12.4 $11.7 $11.4 
Lease Term and Discount Rate:Year Ended December 31,
2025
Weighted-average remaining lease term (years)
   Finance leases10.8
   Operating leases14.6
Weighted-average discount rate
   Finance leases6.9 %
   Operating leases7.3 %
Schedule of Operating Lease Liability Maturity
Maturity of Lease Liabilities:
(Millions of dollars)Operating leasesFinance leases
2026$66.6 $20.6 
202766.6 19.5 
202865.6 18.5 
202964.0 16.4 
203062.4 14.1 
After 2030661.0 84.4 
Total lease payments986.2 173.5 
Less: interest425.8 55.0 
Present value of lease liabilities$560.4 $118.5 
Schedule of Finance Lease Liability Maturity
Maturity of Lease Liabilities:
(Millions of dollars)Operating leasesFinance leases
2026$66.6 $20.6 
202766.6 19.5 
202865.6 18.5 
202964.0 16.4 
203062.4 14.1 
After 2030661.0 84.4 
Total lease payments986.2 173.5 
Less: interest425.8 55.0 
Present value of lease liabilities$560.4 $118.5 
v3.25.4
Business Segments (Tables)
 12 Months Ended
Dec. 31, 2025
Segment Reporting [Abstract]  
Schedule of Segment Information and Other Significant Items
Marketing Segment InformationYears ended December 31,
(Millions of dollars)202520242023
Revenues from external customers$19,383.5 $20,243.7 $21,528.9 
Reconciliation of revenue
Other revenues1
0.5 0.6 0.5 
Total consolidated revenue$19,384.0 $20,244.3 $21,529.4 
Less:2
Cost of goods sold17,024.6 17,937.5 19,215.6 
Store and other operating expenses1,108.3 1,064.4 1,014.6 
Selling, general and administrative231.5 235.4 240.5 
Depreciation and amortization250.8 229.8 211.9 
Other segment items3
11.2 16.0 3.5 
Interest expense8.0 8.4 8.9 
Segment income before income taxes$749.1 $752.2 $833.9 
Reconciliation of income before income taxes
Income before income taxes$609.2 $651.6 $734.4 
Other (revenues)1
(0.5)(0.6)(0.5)
Other operating expenses0.2 0.2 0.2 
Depreciation and amortization26.0 18.2 16.8 
Restructuring expenses12.6 — — 
(Gain) loss on sale of assets0.3 (0.1)0.1 
Investment (income) loss(0.2)(6.4)(6.9)
Interest expense102.9 88.7 89.6 
Other nonoperating (income) expense(1.4)0.6 0.2 
Segment income before income taxes$749.1 $752.2 $833.9 
1Revenues from corporate and other assets not included in the reportable segment results.
2The significant expense categories and amounts align with the segment-level information that is regularly provided to the CODM. Intersegment expenses are included within the amounts shown.
3Other segment items includes: accretion of asset retirement obligations, impairment of properties, (gain) loss on sale of assets and other nonoperating (income) expense
Other specified segment disclosures
(Millions of dollars)Marketing
Totals
Reconciling Items4
Consolidated
Totals
Year ended December 31, 2025
Accretion of asset retirement obligations$3.4 $— $3.4 
Deferred and noncurrent income taxes (benefits)$58.4 $(13.3)$45.1 
Additions to property, plant and equipment$414.6 $17.8 $432.4 
Total assets at year-end$4,534.6 $191.2 $4,725.8 
(Millions of dollars)Marketing
Totals
Reconciling Items4
Consolidated
Totals
Year ended December 31, 2024
Accretion of asset retirement obligations$3.2 $— $3.2 
Deferred and noncurrent income taxes (benefits)$17.6 $(3.6)$14.0 
Additions to property, plant and equipment$464.1 $38.9 $503.0 
Total assets at year-end$4,326.8 $214.8 $4,541.6 
(Millions of dollars)Marketing
Totals
Reconciling Items4
Consolidated
Totals
Year ended December 31, 2023
Accretion of asset retirement obligations$3.0 $— $3.0 
Deferred and noncurrent income taxes (benefits)$(4.5)$6.5 $2.0 
Additions to property, plant and equipment$289.5 $54.6 $344.1 
Total assets at year-end$4,061.7 $278.4 $4,340.1 
4Corporate and other assets not included in the reportable segment results.
v3.25.4
Restructuring Expenses (Tables)
 12 Months Ended
Dec. 31, 2025
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Charges
A summary of the restructuring charges is as follows:
Years Ended December 31,
(Millions of dollars)202520242023
Severance pay, related benefits and other costs$12.6 $— $— 
Total restructuring expense$12.6 $— $— 
Schedule of Reconciliation of the Changes in the Restructuring Liability
A reconciliation of the changes in the restructuring liability, as of December 31, 2025, is as follows:

(Millions of dollars)
Balance as of December 31, 2024
$— 
Charges incurred during the period12.6 
Cash payments(7.0)
Changes in estimates and other adjustments— 
Balance as of December 31, 2025
$5.6 
v3.25.4
Description of Business and Basis of Presentation (Details)
Aug. 31, 2013
Aug. 30, 2013
Dec. 31, 2025
store
state
Jan. 29, 2021
store
Product Information [Line Items]        
Percentage of shares of stock distributed (as a percent)   100.00%    
Ownership interest after transaction 0.00%      
Number of stores     1,800  
Number of states in which entity operates | state     27  
QuickChek        
Product Information [Line Items]        
Number of stores     151  
Murphy        
Product Information [Line Items]        
Number of stores     1,649  
QuickChek        
Product Information [Line Items]        
Percentage of equity interest acquired (as a percent)       100.00%
Number of stores       156
v3.25.4
Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]      
Excise taxes collected and remitted $ 2,366.1 $ 2,334.9 $ 2,291.2
Interest costs capitalized $ 4.4 4.2 2.4
Required term to facilitate forward agreement (in days) 180 days    
Impairment charges $ 5.3 $ 8.2 $ 0.0
Marketing facilities | Minimum      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 3 years    
Marketing facilities | Maximum      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 25 years    
Retail gasoline stores | Minimum      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 3 years    
Retail gasoline stores | Maximum      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 50 years    
v3.25.4
Significant Accounting Policies - Stock-based Compensation (Details)
 12 Months Ended
Dec. 31, 2025
Nonqualified Stock Options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period (in years) 3 years
Restricted Stock And Restricted Stock Units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period (in years) 3 years
v3.25.4
Revenues - Schedule of Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]      
Revenue $ 19,384.0 $ 20,244.3 $ 21,529.4
Merchandise sales      
Disaggregation of Revenue [Line Items]      
Revenue 4,303.8 4,214.8 4,089.3
Operating segments | Marketing      
Disaggregation of Revenue [Line Items]      
Revenue 19,383.5 20,243.7 21,528.9
Operating segments | Marketing | Total petroleum product sales      
Disaggregation of Revenue [Line Items]      
Revenue 14,862.8 15,891.8 17,104.4
Operating segments | Marketing | Petroleum product sales (at retail)      
Disaggregation of Revenue [Line Items]      
Revenue 13,397.7 14,417.5 15,279.9
Operating segments | Marketing | Petroleum product sales (at wholesale)      
Disaggregation of Revenue [Line Items]      
Revenue 1,465.1 1,474.3 1,824.5
Operating segments | Marketing | Merchandise sales      
Disaggregation of Revenue [Line Items]      
Revenue 4,303.8 4,214.8 4,089.3
Operating segments | Marketing | RINs      
Disaggregation of Revenue [Line Items]      
Revenue 211.7 129.6 328.6
Operating segments | Marketing | Other revenues      
Disaggregation of Revenue [Line Items]      
Revenue 5.2 7.5 6.6
Corporate and Other Assets      
Disaggregation of Revenue [Line Items]      
Revenue $ 0.5 $ 0.6 $ 0.5
v3.25.4
Revenues - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disaggregation of Revenue [Line Items]    
Earned rewards, expiration period (in days) 90 days  
Trade accounts receivable $ 276.2 $ 268.5
Receivables related to contracts with customers    
Disaggregation of Revenue [Line Items]    
Trade accounts receivable $ 115.0 $ 110.5
Petroleum product sales, rack sales    
Disaggregation of Revenue [Line Items]    
Collection period (in days) 10 days  
Renewable Identification Numbers (RINs) sales    
Disaggregation of Revenue [Line Items]    
Collection period (in days) 5 days  
Minimum | Petroleum product sales (at retail)    
Disaggregation of Revenue [Line Items]    
Collection period (in days) 2 days  
Maximum | Petroleum product sales (at retail)    
Disaggregation of Revenue [Line Items]    
Collection period (in days) 7 days  
v3.25.4
Inventories - Schedule of Inventory (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Inventory Disclosure [Abstract]    
Petroleum products - FIFO basis $ 305.8 $ 353.3
Store merchandise for resale - FIFO basis 254.7 226.5
Less LIFO reserve (162.6) (189.1)
Total petroleum products and store merchandise inventory 397.9 390.7
Materials and supplies 15.1 10.9
Total inventories $ 413.0 $ 401.6
v3.25.4
Inventories - Narrative (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Inventory [Line Items]    
LIFO reserve $ 162.6 $ 189.1
Petroleum Products    
Inventory [Line Items]    
LIFO reserve $ 162.6 $ 189.1
v3.25.4
Marketable Securities - Narrative (Details)
Dec. 31, 2025
USD ($)
Investments, Debt and Equity Securities [Abstract]  
Maturity (in months) 24 months
Weighted average maturity (in months) 12 months
Net asset value $ 1.00
v3.25.4
Property, Plant and Equipment (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]      
Cost $ 5,136.3 $ 4,744.6  
Net 2,962.8 2,813.2  
Depreciation expense 275.8 247.0 $ 227.7
Land      
Property, Plant and Equipment [Line Items]      
Cost 709.4 674.6  
Net 709.4 674.6  
Real estate finance leases      
Property, Plant and Equipment [Line Items]      
Cost 155.0 150.9  
Net 93.0 100.8  
Pipeline and terminal facilities      
Property, Plant and Equipment [Line Items]      
Cost 105.9 99.2  
Net 59.8 57.1  
Retail gasoline stores      
Property, Plant and Equipment [Line Items]      
Cost 3,823.4 3,498.7  
Net 1,953.9 1,826.3  
Buildings      
Property, Plant and Equipment [Line Items]      
Cost 75.7 75.4  
Net 40.6 43.8  
Other      
Property, Plant and Equipment [Line Items]      
Cost 266.9 245.8  
Net $ 106.1 $ 110.6  
Minimum | Real estate finance leases      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 1 year    
Minimum | Pipeline and terminal facilities      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 3 years    
Minimum | Retail gasoline stores      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 3 years    
Minimum | Buildings      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 20 years    
Minimum | Other      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 3 years    
Maximum | Real estate finance leases      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 40 years    
Maximum | Pipeline and terminal facilities      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 25 years    
Maximum | Retail gasoline stores      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 50 years    
Maximum | Buildings      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 45 years    
Maximum | Other      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 20 years    
v3.25.4
Goodwill and Intangible Assets - Narrative (Details)
Dec. 31, 2025
USD ($)
Finite-Lived Intangible Assets [Line Items]  
Tax deductible goodwill $ 0
Pipeline space  
Finite-Lived Intangible Assets [Line Items]  
Useful Life (in years) 40 years
v3.25.4
Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]    
Goodwill $ 328.0 $ 328.0
v3.25.4
Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Cost    
Total intangible assets subject to amortization $ 30.5 $ 30.5
Intangible assets, net of amortization 145.9 145.9
Net    
Total intangible assets subject to amortization 23.9 24.1
Intangible assets, net of amortization 139.3 139.5
Trade name    
Cost    
Intangible assets not subject to amortization, indefinite lives: 115.4 115.4
Net    
Intangible assets not subject to amortization, indefinite lives: $ 115.4 115.4
Pipeline space    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Remaining Useful Life (in years) 29 years 8 months 12 days  
Cost    
Pipeline space $ 39.6 39.6
Net    
Pipeline space $ 29.7 30.7
Intangible lease liability    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Remaining Useful Life (in years) 8 years 7 months 6 days  
Cost    
Intangible lease liability $ (9.1) (9.1)
Net    
Intangible lease liability $ (5.8) $ (6.6)
v3.25.4
Accounts Payable And Accrued Liabilities - Schedule of Accounts Payable and Accrued Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Payables and Accruals [Abstract]    
Trade accounts payable $ 477.5 $ 518.0
Excise taxes/withholdings payable 106.1 99.7
Accrued insurance obligations 68.3 59.7
Accrued taxes other than income 49.7 43.2
Accrued compensation and benefits 58.5 39.9
Accrued capital expenditures 38.5 55.1
Current operating lease liabilities 25.8 23.7
Other 40.8 35.1
Accounts payable and accrued liabilities $ 865.2 $ 874.4
v3.25.4
Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Jan. 29, 2021
Sep. 13, 2019
Apr. 25, 2017
Debt Instrument [Line Items]          
Capitalized lease obligations $ 118.5        
Unamortized debt issuance costs (11.9) $ (5.2)      
Total long-term debt 2,182.6 1,848.4      
Less current maturities 19.0 15.7      
Total long-term debt, net of current 2,163.6 1,832.7      
Capitalized lease obligations, autos and equipment, due through 2030          
Debt Instrument [Line Items]          
Capitalized lease obligations 7.7 3.2      
Capitalized lease obligations, buildings, due through 2059          
Debt Instrument [Line Items]          
Capitalized lease obligations $ 110.8 116.5      
Senior Notes | 5.625% senior notes due 2027 (net of unamortized discount of $0.5 at 2025 and $0.9 at 2024)          
Debt Instrument [Line Items]          
Stated interest rate (as a percent) 5.625%       5.625%
Unamortized discount $ 0.5 0.9      
Long-term debt $ 299.5 299.1      
Senior Notes | 4.75% senior notes due 2029 (net of unamortized discount of $2.3 at 2025 and $3.0 at 2024)          
Debt Instrument [Line Items]          
Stated interest rate (as a percent) 4.75%     4.75%  
Unamortized discount $ 2.3 3.0      
Long-term debt $ 497.7 497.0      
Senior Notes | 3.75% senior notes due 2031 (net of unamortized discount of $3.2 at 2025 and $3.8 at 2024)          
Debt Instrument [Line Items]          
Stated interest rate (as a percent) 3.75%   3.75%    
Unamortized discount $ 3.2 3.8      
Long-term debt 496.8 $ 496.2      
Secured Debt | Term loan | Term loan          
Debt Instrument [Line Items]          
Unamortized discount $ 1.0        
Effective interest rate (as a percent) 5.61% 6.44%      
Long-term debt $ 599.0 $ 385.6      
Line of Credit | Revolving Credit Facility          
Debt Instrument [Line Items]          
Weighted average interest rate (as a percent) 5.88%        
Long-term debt $ 183.0 $ 56.0      
v3.25.4
Long-Term Debt - Narrative (Details)
Apr. 07, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Jan. 29, 2021
USD ($)
Sep. 13, 2019
USD ($)
Apr. 25, 2017
USD ($)
Debt Instrument [Line Items]            
Outstanding letters of credit   $ 7,900,000        
Senior Notes | 5.625% senior notes due 2027 (net of unamortized discount of $0.5 at 2025 and $0.9 at 2024)            
Debt Instrument [Line Items]            
Senior notes           $ 300,000,000
Stated interest rate (as a percent)   5.625%       5.625%
Senior Notes | 4.75% senior notes due 2029 (net of unamortized discount of $2.3 at 2025 and $3.0 at 2024)            
Debt Instrument [Line Items]            
Senior notes         $ 500,000,000  
Stated interest rate (as a percent)   4.75%     4.75%  
Senior Notes | 3.75% senior notes due 2031 (net of unamortized discount of $3.2 at 2025 and $3.8 at 2024)            
Debt Instrument [Line Items]            
Senior notes       $ 500,000,000    
Stated interest rate (as a percent)   3.75%   3.75%    
Line of Credit | Term Facility            
Debt Instrument [Line Items]            
Senior notes $ 600,000,000          
Annual amortization payment (as a percent) 1.00%          
Line of Credit | Term Facility | One-month Adjusted Term SOFR Rate            
Debt Instrument [Line Items]            
Spread over variable rate (as a percent) 1.75%          
Line of Credit | Term Facility | Alternative Base Rate            
Debt Instrument [Line Items]            
Spread over variable rate (as a percent) 0.75%          
Line of Credit | Revolving Facility            
Debt Instrument [Line Items]            
Aggregate commitment $ 750,000,000          
Outstanding balance   $ 600,000,000 $ 386,000,000      
Principal payment period $ 1,500,000          
Outstanding under facility   $ 183,000,000        
Total leverage ratio 5.0          
Temporary increase to leverage ratio 5.5          
Temporary increase to secured net leverage ratio financial maintenance covenants 2.50          
Fixed charge coverage ratio       3.0    
Actual total leverage ratio   2.11        
Maximum restricted payments in cash       $ 400,000,000    
Maximum consolidated net tangible assets over the life of the credit agreement (as a percent)       15.00%    
Estimated consolidated net tangible assets   $ 424,300,000        
Line of Credit | Revolving Facility | One-month Adjusted Term SOFR Rate | Minimum            
Debt Instrument [Line Items]            
Spread over variable rate (as a percent) 1.25%          
Line of Credit | Revolving Facility | One-month Adjusted Term SOFR Rate | Maximum            
Debt Instrument [Line Items]            
Spread over variable rate (as a percent) 2.00%          
Line of Credit | Revolving Facility | Alternative Base Rate | Minimum            
Debt Instrument [Line Items]            
Spread over variable rate (as a percent) 0.25%          
Line of Credit | Revolving Facility | Alternative Base Rate | Maximum            
Debt Instrument [Line Items]            
Spread over variable rate (as a percent) 1.00%          
Line of Credit | Letters of credit            
Debt Instrument [Line Items]            
Outstanding letters of credit   $ 6,200,000        
v3.25.4
Asset Retirement Obligations - Schedule of Reconciliation of ARO (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Asset Retirement Obligation Roll Forward      
Balance at beginning of period $ 49.1 $ 46.1  
Accretion expense 3.4 3.2 $ 3.0
Settlement of liabilities (1.0) (3.1)  
Liabilities incurred 1.0 2.9  
Balance at end of period $ 52.5 $ 49.1 $ 46.1
v3.25.4
Income Taxes - Schedule of Components of Income Before Income Taxes And Income Tax Expense (Benefit) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Disclosure [Abstract]      
Income (loss) before income taxes $ 609.2 $ 651.6 $ 734.4
Income tax expense (benefit)      
Federal - Current 70.1 115.5 141.5
Federal - Deferred 48.4 11.8 3.5
State - Current and deferred 20.1 21.8 32.6
Income tax expense (benefit) $ 138.6 $ 149.1 $ 177.6
v3.25.4
Income Taxes - Schedule of Reconciliation of Income Taxes Expense (Benefit) to Statutory Rate (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Amount      
Income tax expense (benefit) based on the U.S. statutory tax rate $ 127.9 $ 136.8 $ 154.2
Tax Credits (8.0)    
Nontaxable and nondeductible items 2.0    
Federal credits   (2.5) (2.6)
Other reconciling items 0.2 (2.5) 1.0
Domestic state and local income taxes, net of federal effect 16.5 17.3 25.0
Income tax expense (benefit) $ 138.6 $ 149.1 $ 177.6
Percent      
Income tax expense (benefit) based on the U.S. statutory tax rate 21.00%    
Tax Credits (1.30%)    
Nontaxable and nondeductible items 0.30%    
Other reconciling items 0.00%    
Domestic state and local income taxes, net of federal effect 2.80%    
Total income tax expense (benefit) 22.80%    
Tax Jurisdiction of Domicile [Extensible Enumeration] UNITED STATES UNITED STATES UNITED STATES
v3.25.4
Income Taxes - Schedule of Cash Income Tax, Net of Refunds (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Disclosure [Abstract]      
US federal $ 86.0    
US state and local 15.0    
Total $ 101.0 $ 109.5 $ 128.0
v3.25.4
Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Disclosure [Abstract]      
Cash income taxes paid, net of refunds $ 101,000,000.0 $ 109,500,000 $ 128,000,000.0
Unrecognized tax benefits that would impact effective tax rate 0 0  
Excess tax benefits for equity compensation $ 2,900,000 $ 5,000,000 $ 2,900,000
v3.25.4
Income Taxes - Schedule of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Deferred tax assets    
Property costs and asset retirement obligations $ 8.1 $ 7.3
Employee benefits 12.4 11.7
Operating leases liability 117.7 109.2
Other deferred tax assets 15.0 15.9
Total gross deferred tax assets 153.2 144.1
Deferred tax liabilities    
Accumulated depreciation and amortization (383.0) (344.5)
State deferred taxes (28.6) (31.2)
Operating leases right-of-use assets (110.5) (103.5)
Other deferred tax liabilities (19.6) (8.3)
Total gross deferred tax liabilities (541.7) (487.5)
Net deferred tax liabilities $ (388.5) $ (343.4)
v3.25.4
Income Taxes - Reconciliation of Beginning and Ending Liability For Uncertain Tax Positions (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Unrecognized Tax Benefits [Roll Forward]    
Balance at January 1 $ 0.0 $ 0.5
Additions for tax positions related to prior years 0.0 0.0
Expiration of statutes of limitation 0.0 (0.5)
Balance at December 31 $ 0.0 $ 0.0
v3.25.4
Incentive Plans - Narrative (Details)
 1 Months Ended 12 Months Ended 20 Months Ended
Aug. 30, 2013
USD ($)
shares
Feb. 29, 2024
peer_company
$ / shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2024
shares
May 04, 2023
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares granted (in shares)     28,900        
Compensation charged against income before income tax benefit | $     $ 28,600,000 $ 22,900,000 $ 21,800,000    
Unrecognized compensation cost related to stock option awards | $     $ 18,300,000        
Unrecognized compensation cost related to stock option awards, weighted average period for recognition (in years)     2 years 2 months 12 days        
Total income tax benefits realized from tax deductions related to stock option exercises under share-based payment arrangements | $     $ 400,000 $ 1,100,000 $ 800,000    
2013 Long-Term Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Maximum number of shares authorized for incentive plan (in shares) 5,500,000            
Maximum number of shares per employee (in shares) 1,000,000            
Maximum amount payable | $ $ 5,000,000            
2023 Omnibus Incentive Compensation Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Maximum number of shares authorized for incentive plan (in shares)             1,725,000
Shares granted (in shares)           191,075  
Shares available for grant (in shares)     1,533,925        
2023 Omnibus Incentive Compensation Plan | DSUs | Non-employee directors              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share of common stock right     1        
Granted (in shares)     865        
Compensation charged against income before income tax benefit | $     $ 400,000        
Outstanding (in shares)     2,604        
Weighted average grant date fair value (in dollars per share) | $ / shares     $ 399.79        
MUSA 2013 Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Option term (in years)     7 years        
MUSA 2013 Plan | RSUs              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)     3 years        
MUSA 2013 Plan | RSUs | Non-employee directors              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)     1 year        
MUSA 2013 Plan | Return On Average Capital Employed Performance Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)   3 years          
MUSA 2013 Plan | Return On Average Capital Employed Performance Units | ROACE              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted stock units issued, weighted average grant date fair value (in dollars per share) | $ / shares   $ 492.22          
MUSA 2013 Plan | Total Shareholder Return Performance Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)   3 years          
Number of companies in total shareholder return peer comparison group | peer_company   17          
MUSA 2013 Plan | Total Shareholder Return Performance Units | TSR              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted stock units issued, weighted average grant date fair value (in dollars per share) | $ / shares   $ 674.28          
2013 Directors Plan | RSUs | Non-employee directors | Prior to 2023              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)     3 years        
2013 Directors Plan | RSUs | Non-employee directors | In 2023              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)     1 year        
2013 Directors Plan | DSUs | Non-employee directors              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share of common stock right     1        
Outstanding (in shares)     426        
Weighted average grant date fair value (in dollars per share) | $ / shares     $ 259.87        
v3.25.4
Incentive Plans - Schedule of Valuation Assumptions (Details) - MUSA 2013 Plan - $ / shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value per option grant (in dollars per share) $ 154.07 $ 133.91 $ 88.53
Dividend yield 0.40% 0.40% 0.50%
Expected volatility 27.90% 32.90% 33.10%
Risk-free interest rate 4.50% 4.30% 3.80%
Expected life (years) 4 years 9 months 18 days 4 years 9 months 18 days 4 years 10 months 24 days
Stock price at valuation date (usd per share) $ 492.22 $ 391.54 $ 263.48
v3.25.4
Incentive Plans - Schedule of Changes in Stock Options Outstanding (Details)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
$ / shares
shares
Number of Shares (in shares)  
Beginning balance (in shares) | shares 259,750
Granted (in shares) | shares 28,900
Exercised (in shares) | shares (36,200)
Forfeited (in shares) | shares (7,350)
Ending balance (in shares) | shares 245,100
Exercisable (in shares) | shares 172,790
Weighted-Average Exercise Price  
Beginning balance (in dollars per share) | $ / shares $ 180.68
Granted (in dollars per share) | $ / shares 492.22
Exercised (in dollars per share) | $ / shares 99.28
Forfeited (in dollars per share) | $ / shares 410.81
Ending balance (in dollars per share) | $ / shares 222.54
Exercisable (in dollars per share) | $ / shares $ 148.96
Weighted-Average Remaining Contractual Term (Years)  
Outstanding, weighted average remaining contractual term (in years) 3 years 1 month 6 days
Exercisable, weighted average remaining contractual term (in years) 2 years 2 months 12 days
Aggregate Intrinsic Value (Millions of Dollars)  
Outstanding, aggregate intrinsic value | $ $ 46.7
Exercisable, aggregate intrinsic value | $ $ 44.0
v3.25.4
Incentive Plans - Schedule of Additional Stock Option Information (Details)
 12 Months Ended
Dec. 31, 2025
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options outstanding (in shares) 245,100
Options outstanding, average remaining life (in years) 3 years 1 month 6 days
Options exercisable (in shares) 172,790
Options exercisable, average remaining life (in years) 2 years 2 months 12 days
$0.00 to $99.99  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Lower range limit of exercise price (in dollars per share) | $ / shares $ 0.00
Upper range limit of exercise price (in dollars per share) | $ / shares $ 99.99
Options outstanding (in shares) 8,600
Options outstanding, average remaining life (in years) 2 months 12 days
Options exercisable (in shares) 8,600
Options exercisable, average remaining life (in years) 2 months 12 days
$100.00 to $149.99  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Lower range limit of exercise price (in dollars per share) | $ / shares $ 100.00
Upper range limit of exercise price (in dollars per share) | $ / shares $ 149.99
Options outstanding (in shares) 98,140
Options outstanding, average remaining life (in years) 1 year 7 months 6 days
Options exercisable (in shares) 98,140
Options exercisable, average remaining life (in years) 1 year 7 months 6 days
$150.00 to $249.99  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Lower range limit of exercise price (in dollars per share) | $ / shares $ 150.00
Upper range limit of exercise price (in dollars per share) | $ / shares $ 249.99
Options outstanding (in shares) 47,900
Options outstanding, average remaining life (in years) 3 years
Options exercisable (in shares) 47,900
Options exercisable, average remaining life (in years) 3 years
$250.00 to $349.99  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Lower range limit of exercise price (in dollars per share) | $ / shares $ 250.00
Upper range limit of exercise price (in dollars per share) | $ / shares $ 349.99
Options outstanding (in shares) 34,550
Options outstanding, average remaining life (in years) 3 years 10 months 24 days
Options exercisable (in shares) 17,750
Options exercisable, average remaining life (in years) 3 years 8 months 12 days
$350.00 to $449.99  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Lower range limit of exercise price (in dollars per share) | $ / shares $ 350.00
Upper range limit of exercise price (in dollars per share) | $ / shares $ 449.99
Options outstanding (in shares) 29,710
Options outstanding, average remaining life (in years) 5 years 1 month 6 days
Options exercisable (in shares) 400
Options exercisable, average remaining life (in years) 1 year 2 months 12 days
$450.00 to Above  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Lower range limit of exercise price (in dollars per share) | $ / shares $ 450.00
Options outstanding (in shares) 26,200
Options outstanding, average remaining life (in years) 6 years 1 month 6 days
Options exercisable (in shares) 0
Options exercisable, average remaining life (in years) 0 years
v3.25.4
Incentive Plans - Schedule of Restricted Stock Unit Activity (Details)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
$ / shares
shares
2013 Plan — Employee RSUs and PSUs | RSUs | Employees  
Number of Units  
Beginning balance (in shares) | shares 98,214
Granted (in shares) | shares 29,467
Vested (in shares) | shares (38,968)
Issued (in shares) | shares (38,968)
Forfeited (in shares) | shares (6,798)
Ending balance (in shares) | shares 81,915
Weighted Average Grant Date Fair Value (in dollars per share)  
Beginning balance (in dollars per share) | $ / shares $ 285.60
Granted (in dollars per share) | $ / shares 462.80
Vested (in dollars per share) | $ / shares 212.35
Issued (in dollars per share) | $ / shares 212.35
Forfeited (in dollars per share) | $ / shares 386.91
Ending balance (in dollars per share) | $ / shares $ 376.60
Total Fair Value  
Total fair value vested | $ $ 17.9
Total fair value issued | $ 17.9
Total fair value, outstanding | $ $ 33.1
2013 Plan — Employee RSUs and PSUs | Employee PSUs | Employees  
Number of Units  
Beginning balance (in shares) | shares 77,395
Granted (in shares) | shares 49,371
Vested (in shares) | shares (61,288)
Issued (in shares) | shares (61,288)
Forfeited (in shares) | shares (5,874)
Ending balance (in shares) | shares 59,604
Weighted Average Grant Date Fair Value (in dollars per share)  
Beginning balance (in dollars per share) | $ / shares $ 320.05
Granted (in dollars per share) | $ / shares 583.25
Vested (in dollars per share) | $ / shares 221.39
Issued (in dollars per share) | $ / shares 221.39
Forfeited (in dollars per share) | $ / shares 466.58
Ending balance (in dollars per share) | $ / shares $ 438.28
Total Fair Value  
Total fair value vested | $ $ 29.7
Total fair value issued | $ 29.7
Total fair value, outstanding | $ $ 24.1
2013 Directors Plan | 2023 Plan — RSUs and Director DSUs | Non-employee directors  
Number of Units  
Beginning balance (in shares) | shares 9,436
Granted (in shares) | shares 12
Vested (in shares) | shares (7,174)
Issued (in shares) | shares (7,174)
Ending balance (in shares) | shares 2,274
Weighted Average Grant Date Fair Value (in dollars per share)  
Beginning balance (in dollars per share) | $ / shares $ 196.38
Granted (in dollars per share) | $ / shares 406.93
Vested (in dollars per share) | $ / shares 175.84
Issued (in dollars per share) | $ / shares 175.84
Ending balance (in dollars per share) | $ / shares $ 261.51
Total Fair Value  
Total fair value vested | $ $ 3.5
Total fair value issued | $ 3.5
Total fair value, outstanding | $ $ 0.9
v3.25.4
Incentive Plans - Schedule of Amounts Recognized in Financial Statements with Respect to Share-Based Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]      
Compensation charged against income before income tax benefit $ 28.6 $ 22.9 $ 21.8
Related income tax benefit recognized in income $ 6.0 $ 4.8 $ 4.6
v3.25.4
Employee and Retiree Benefit Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Supplemental Executive Retirement Plan      
Defined Contribution Plan Disclosure [Line Items]      
Liability for retirement plan $ 8.4 $ 11.4  
Thrift Plan      
Defined Contribution Plan Disclosure [Line Items]      
Company matching contribution (as a percent) 100.00%    
Employee's maximum contribution matched by Company (as a percent) 6.00%    
Combined expenses $ 21.1 $ 25.9 $ 23.8
Thrift Plan | Minimum      
Defined Contribution Plan Disclosure [Line Items]      
Profit sharing percentage (as a percent) 3.00%    
Thrift Plan | Maximum      
Defined Contribution Plan Disclosure [Line Items]      
Profit sharing percentage (as a percent) 9.00%    
v3.25.4
Financial Instruments and Risk Management (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Cash deposits related to commodity derivative contracts $ 0.0 $ 0.2
v3.25.4
Earnings Per Share - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Oct. 29, 2025
May 02, 2023
Dec. 01, 2021
Oct. 31, 2020
Equity, Class of Treasury Stock [Line Items]              
Stock repurchase program, shares acquired (in shares)   938,528 1,026,300        
Common stock acquired $ 652,000,000.0 $ 446,600,000 $ 336,200,000        
Stock repurchase program, average price per share (in dollars per share)   $ 475.86 $ 327.55        
2022 Shares Repurchased Program              
Equity, Class of Treasury Stock [Line Items]              
Share repurchase authorization (in shares)           $ 1,000,000,000  
October 2020 Share Repurchase Program              
Equity, Class of Treasury Stock [Line Items]              
Share repurchase authorization (in shares)             $ 500,000,000
2023 Authorization              
Equity, Class of Treasury Stock [Line Items]              
Share repurchase authorization (in shares) $ 1,500,000,000     $ 2,000,000,000 $ 1,500,000,000    
Stock repurchase program, shares acquired (in shares) 1,536,701            
Common stock acquired $ 652,000,000            
Stock repurchase program, average price per share (in dollars per share) $ 424.28            
Stock repurchase program, remaining amount $ 291,900,000            
v3.25.4
Earnings Per Share - Reconciliation of Basic and Diluted Earnings Per Share Computations (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Earnings per common share:      
Net income attributable to common stockholders $ 470.6 $ 502.5 $ 556.8
Weighted average common shares outstanding (in shares) 19,303 20,533 21,493
Earnings per common share (in dollars per share) $ 24.38 $ 24.47 $ 25.91
Earnings per common share - assuming dilution:      
Net income attributable to common stockholders $ 470.6 $ 502.5 $ 556.8
Weighted average common shares outstanding (in shares) 19,303 20,533 21,493
Common equivalent shares:      
Share-based awards (in shares) 223 309 350
Weighted average common shares outstanding - assuming dilution (in shares) 19,526 20,842 21,843
Earnings per common share assuming dilution (in dollars per share) $ 24.10 $ 24.11 $ 25.49
v3.25.4
Earnings Per Share - Potentially Dilutive Shares Excluded from Earnings Per Share (Details) - shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities (in shares) 63,820 29,394 34,177
Stock Options      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities (in shares) 56,391 28,929 34,133
RSUs      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities (in shares) 7,429 13 44
PSUs      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities (in shares) 0 452 0
v3.25.4
Other Financial Information - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Interest paid, net of amounts capitalized $ 105.1 $ 93.1 $ 92.3
v3.25.4
Other Financial Information - Schedule of Changes in Working Capital (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Accounts receivable $ (8.1) $ 65.4 $ (56.3)
Inventories (11.4) (60.2) (22.1)
Prepaid expenses and other current assets 3.6 (3.1) 25.2
Accounts payable and accrued liabilities (4.3) (3.9) (12.0)
Income taxes payable (12.9) 34.6 23.1
Net (increase) decrease in noncash operating working capital $ (33.1) $ 32.8 $ (42.1)
v3.25.4
Assets and Liabilities Measured at Fair Value - Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Financial assets    
Fuel derivative $ 0.0 $ 0.2
Deferred compensation plan assets 18.6 14.9
Financial liabilities    
Deferred compensation plan liabilities (26.7) (26.3)
Fair value, net asset (liability) (8.1) (11.2)
Level 1    
Financial assets    
Fuel derivative 0.0 0.0
Deferred compensation plan assets 18.6 14.9
Financial liabilities    
Deferred compensation plan liabilities (26.7) (26.3)
Fair value, net asset (liability) (8.1) (11.4)
Level 2    
Financial assets    
Fuel derivative 0.0 0.0
Deferred compensation plan assets 0.0 0.0
Financial liabilities    
Deferred compensation plan liabilities 0.0 0.0
Fair value, net asset (liability) 0.0 0.0
Level 3    
Financial assets    
Fuel derivative 0.0 0.2
Deferred compensation plan assets 0.0 0.0
Financial liabilities    
Deferred compensation plan liabilities 0.0 0.0
Fair value, net asset (liability) $ 0.0 $ 0.2
v3.25.4
Assets and Liabilities Measured at Fair Value - Schedule of Carrying Amounts and Estimated Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Carrying Amount    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current and long-term debt, excluding finance leases $ (2,064.1) $ (1,728.7)
Fair Value | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current and long-term debt, excluding finance leases $ (2,081.2) $ (1,717.5)
v3.25.4
Commitments (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Other Commitments [Line Items]      
Rental expense for noncancelable operating leases $ 73.7 $ 66.2 $ 60.7
Take-Or-Pay Contracts      
Other Commitments [Line Items]      
Term of take-or-pay contract (in years) 4 years 9 months 18 days    
Minimum annual payments under take-or-pay contracts, fiscal year maturity      
2026 $ 9.0    
2027 7.0    
2028 5.2    
2029 5.1    
2030 3.8    
Capital Addition Purchase Commitments      
Other Commitments [Line Items]      
Commitments for capital expenditures 356.8    
Construction in Progress      
Other Commitments [Line Items]      
Commitments for capital expenditures 308.3    
Building Improvements      
Other Commitments [Line Items]      
Commitments for capital expenditures 37.8    
Other Corporate Investments and Other Strategic Initiatives      
Other Commitments [Line Items]      
Commitments for capital expenditures $ 10.8    
v3.25.4
Contingencies (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
superfund_site
Commitments and Contingencies Disclosure [Abstract]  
Number of Superfund sites for which company may be liable | superfund_site 1
Workers' compensation deductible (per occurrence) $ 1.0
General liability insurance deductible 3.0
Auto liability insurance deductible 0.3
Workers' compensation accrued liability 60.7
Outstanding letters of credit $ 7.9
v3.25.4
Lease Accounting - Narrative (Details)
 12 Months Ended
Dec. 31, 2025
lease
extensionOption
Lessee, Lease, Description [Line Items]  
Number of renewal options (or more) | extensionOption 1
Number of leases with restrictive covenants 103
Land  
Lessee, Lease, Description [Line Items]  
Number of leases 481
Terminal  
Lessee, Lease, Description [Line Items]  
Number of leases 1
Minimum  
Lessee, Lease, Description [Line Items]  
Remaining lease term (in years) 1 year
Lease renewal term (in years) 5 years
Maximum  
Lessee, Lease, Description [Line Items]  
Remaining lease term (in years) 34 years
Lease renewal term (in years) 20 years
v3.25.4
Lease Accounting - Schedule of Leases Reflected on Balance Sheet (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Assets    
Operating (Right-of-use) $ 526.3 $ 492.9
Finance 100.2 103.9
Total leased assets 626.5 596.8
Accumulated depreciation 69.0 56.3
Current    
Operating 25.8 23.7
Finance 13.0 11.7
Noncurrent    
Operating 534.6 496.3
Finance 105.5 108.0
Total lease liabilities $ 678.9 $ 639.7
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Trade accounts payable and accrued liabilities Trade accounts payable and accrued liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Current maturities of long-term debt Current maturities of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Long-term debt, including capitalized lease obligations Long-term debt, including capitalized lease obligations
v3.25.4
Lease Accounting - Schedule of Lease Cost (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Leases [Abstract]      
Operating lease cost $ 66.7 $ 59.6 $ 55.1
Finance lease cost      
Amortization of leased assets 14.6 14.6 15.0
Interest on lease liabilities 8.0 8.3 8.9
Net lease costs $ 89.3 $ 82.5 $ 79.0
v3.25.4
Lease Accounting - Schedule of Cash Flow Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Cash paid for amounts included in the measurement of liabilities      
Operating cash flows required by operating leases $ 61.0 $ 53.8 $ 50.6
Operating cash flows required by finance leases 8.0 8.3 8.9
Financing cash flows required by finance leases $ 12.4 $ 11.7 $ 11.4
v3.25.4
Lease Accounting - Schedule of Maturity of Lease Liability (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Operating leases  
2026 $ 66.6
2027 66.6
2028 65.6
2029 64.0
2030 62.4
After 2030 661.0
Total lease payments 986.2
Less: interest 425.8
Present value of lease liabilities 560.4
Finance leases  
2026 20.6
2027 19.5
2028 18.5
2029 16.4
2030 14.1
After 2030 84.4
Total lease payments 173.5
Less: interest 55.0
Present value of lease liabilities $ 118.5
v3.25.4
Lease Accounting - Schedule of Lease Term and Discount Rate (Details)
Dec. 31, 2025
Weighted-average remaining lease term (years)  
Finance leases 10 years 9 months 18 days
Operating leases 14 years 7 months 6 days
Weighted-average discount rate  
Finance leases 6.90%
Operating leases 7.30%
v3.25.4
Business Segments - Narrative (Details)
 12 Months Ended
Dec. 31, 2025
segment
Segment Reporting [Abstract]  
Number of operating segments 1
Number of Reportable Segments 1
v3.25.4
Business Segments - Schedule of Segment Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]      
Total operating revenues $ 19,384.0 $ 20,244.3 $ 21,529.4
Store and other operating expenses 1,108.5 1,064.6 1,014.8
Selling, general and administrative 231.5 235.4 240.5
Depreciation and amortization 276.8 248.0 228.7
Restructuring expense 12.6 0.0 0.0
Interest expense 110.9 97.1 98.5
Investment (income) loss (0.2) (6.4) (6.9)
Other nonoperating income (expense) (1.4) 0.6 0.0
Income (loss) before income taxes 609.2 651.6 734.4
Corporate and Other Assets      
Segment Reporting Information [Line Items]      
Total operating revenues 0.5 0.6 0.5
Depreciation and amortization 26.0 18.2 16.8
Restructuring expense 12.6 0.0 0.0
Interest expense 102.9 88.7 89.6
Other (revenues) (0.5) (0.6) (0.5)
Other operating expenses 0.2 0.2 0.2
Gain (loss) on sale of assets 0.3 (0.1) 0.1
Investment (income) loss (0.2) (6.4) (6.9)
Other nonoperating income (expense) (1.4) 0.6 0.2
Operating segments | Marketing      
Segment Reporting Information [Line Items]      
Total operating revenues 19,383.5 20,243.7 21,528.9
Cost of goods sold 17,024.6 17,937.5 19,215.6
Store and other operating expenses 1,108.3 1,064.4 1,014.6
Selling, general and administrative 231.5 235.4 240.5
Depreciation and amortization 250.8 229.8 211.9
Other segment items 11.2 16.0 3.5
Interest expense 8.0 8.4 8.9
Income (loss) before income taxes $ 749.1 $ 752.2 $ 833.9
v3.25.4
Business Segments - Schedule of Other Significant Items (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]      
Accretion of asset retirement obligations $ 3.4 $ 3.2 $ 3.0
Deferred and noncurrent income tax charges (benefits) 45.1 14.0 2.0
Additions to property, plant and equipment 432.4 503.0 344.1
Total assets at year-end 4,725.8 4,541.6 4,340.1
Operating segments | Marketing      
Segment Reporting Information [Line Items]      
Accretion of asset retirement obligations 3.4 3.2 3.0
Deferred and noncurrent income tax charges (benefits) 58.4 17.6 (4.5)
Additions to property, plant and equipment 414.6 464.1 289.5
Total assets at year-end 4,534.6 4,326.8 4,061.7
Corporate and Other Assets      
Segment Reporting Information [Line Items]      
Accretion of asset retirement obligations 0.0 0.0 0.0
Deferred and noncurrent income tax charges (benefits) (13.3) (3.6) 6.5
Additions to property, plant and equipment 17.8 38.9 54.6
Total assets at year-end $ 191.2 $ 214.8 $ 278.4
v3.25.4
Restructuring Expenses - Schedule of Restructuring Charges (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]      
Total restructuring expense $ 12.6 $ 0.0 $ 0.0
Employee Severance      
Restructuring Cost and Reserve [Line Items]      
Total restructuring expense $ 12.6 $ 0.0 $ 0.0
v3.25.4
Restructuring Expenses - Schedule of Reconciliation of the Changes in the Restructuring Liability (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Restructuring Reserve [Roll Forward]      
Balance as of December 31, 2024 $ 0.0    
Charges incurred during the period 12.6 $ 0.0 $ 0.0
Cash payments (7.0)    
Changes in estimates and other adjustments 0.0    
Balance as of December 31, 2025 $ 5.6 $ 0.0  
v3.25.4
Schedule II - Valuation And Qualifying Accounts (Details) - Allowance for doubtful accounts - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at January 1, $ 0.3 $ 1.3 $ 0.3
Charged (Credited) to Expense 0.1 (1.0) 1.0
Deductions (0.1) 0.0 0.0
Balance at December 31, $ 0.3 $ 0.3 $ 1.3