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Cushing Connect Joint Venture - Schedule of Variable Interest Entities (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Holly Energy Partners Entity [Line Items)    
Cash and cash equivalents $ 1,451 $ 800
Properties, plants and equipment, at cost 11,253 10,931
Less: accumulated depreciation (4,741) (4,373)
Total properties, plants and equipment 6,512 6,558
Intangibles and other 929 962
Variable Interest Entity, Not Primary Beneficiary | Cushing Connect    
Holly Energy Partners Entity [Line Items)    
Cash and cash equivalents 2 5
Properties, plants and equipment, at cost 103 103
Less: accumulated depreciation (14) (12)
Total properties, plants and equipment 89 91
Intangibles and other $ 28 $ 30