XML 22 R1.htm IDEA: XBRL DOCUMENT 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