v3.26.1
Schedule H, Line 4i – Schedule of Assets (Held At End of Year) (Details) - EBP 001
12 Months Ended
Dec. 31, 2025
USD ($)
EBP, Schedule of Asset Held for Investment [Line Items]  
Entity tax identification number 46-2279221
Plan number 001
Notes receivable from participants $ 7,787,226
Current value $ 379,549,048
Minimum  
EBP, Schedule of Asset Held for Investment [Line Items]  
Interest rate 3.25%
Maximum  
EBP, Schedule of Asset Held for Investment [Line Items]  
Interest rate 9.50%
Investment, Identifier [Axis]: FMI Large Cap Fund Investor Class, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value $ 14,372,432
Investment, Identifier [Axis]: Fidelity Freedom® 2010 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 168,543
Investment, Identifier [Axis]: Fidelity Freedom® 2015 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 426,182
Investment, Identifier [Axis]: Fidelity Freedom® 2020 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 4,626,067
Investment, Identifier [Axis]: Fidelity Freedom® 2025 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 14,099,436
Investment, Identifier [Axis]: Fidelity Freedom® 2030 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 28,223,794
Investment, Identifier [Axis]: Fidelity Freedom® 2035 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 30,496,207
Investment, Identifier [Axis]: Fidelity Freedom® 2040 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 34,615,567
Investment, Identifier [Axis]: Fidelity Freedom® 2045 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 29,013,069
Investment, Identifier [Axis]: Fidelity Freedom® 2050 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 22,589,332
Investment, Identifier [Axis]: Fidelity Freedom® 2055 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 16,369,413
Investment, Identifier [Axis]: Fidelity Freedom® 2060 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 6,386,955
Investment, Identifier [Axis]: Fidelity Freedom® 2065 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 3,172,467
Investment, Identifier [Axis]: Fidelity Freedom® 2070 Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 162,076
Investment, Identifier [Axis]: Fidelity Freedom® Income Fund Class K, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 3,081,983
Investment, Identifier [Axis]: Fidelity® 500 Index Fund, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 35,967,053
Investment, Identifier [Axis]: Fidelity® Diversified International Fund, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 8,611,923
Investment, Identifier [Axis]: Fidelity® International Index Fund, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 3,859,753
Investment, Identifier [Axis]: Fidelity® Mid Cap Index Fund, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 11,754,921
Investment, Identifier [Axis]: Fidelity® Small Cap Index Fund, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 5,655,850
Investment, Identifier [Axis]: Fidelity® U.S. Bond Index Fund, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 6,909,000
Investment, Identifier [Axis]: Managed Income Portfolio Class 1  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 9,615,105
Investment, Identifier [Axis]: Murphy Oil Corporation Common Stock  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 1,447,471
Investment, Identifier [Axis]: Murphy USA Inc. Common Stock  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 40,532,060
Investment, Identifier [Axis]: PIMCO Income Fund Institutional Class, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 7,709,208
Investment, Identifier [Axis]: Reliance Trust NY Life Anchor Account Class 0  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 2,595,245
Investment, Identifier [Axis]: T. Rowe Price Blue Chip Growth Fund, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 15,870,752
Investment, Identifier [Axis]: T. Rowe Price Dividend Growth Fund, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 8,361,009
Investment, Identifier [Axis]: Vanguard Strategic Equity Fund Investor Shares, Mutual fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 5,068,949
Registered investment companies  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value 317,571,941
Total common/collective trusts  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current value $ 12,210,350