Properties, Plants and Equipment - Schedule of Properties, Plants and Equipment with Associated Accumulated Depreciation and Amortization (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Property, Plant, and Equipment [Line Items]
Gross PP&E	$ 63,159	$ 61,791
Accum. D&A	23,510	22,694
Net PP&E	39,649	39,097
Corporate and Other
Property, Plant, and Equipment [Line Items]
Gross PP&E	4,598	1,492
Accum. D&A	3,804	933
Net PP&E	794	559
Midstream \| Operating Segments
Property, Plant, and Equipment [Line Items]
Gross PP&E	30,851	29,558
Accum. D&A	6,391	5,771
Net PP&E	24,460	23,787
Chemicals \| Operating Segments
Property, Plant, and Equipment [Line Items]
Gross PP&E	0	0
Accum. D&A	0	0
Net PP&E	0	0
Refining \| Operating Segments
Property, Plant, and Equipment [Line Items]
Gross PP&E	22,880	25,955
Accum. D&A	10,940	13,685
Net PP&E	11,940	12,270
Marketing and Specialties \| Operating Segments
Property, Plant, and Equipment [Line Items]
Gross PP&E	1,038	1,014
Accum. D&A	562	543
Net PP&E	476	471
Renewable Fuels \| Operating Segments
Property, Plant, and Equipment [Line Items]
Gross PP&E	3,792	3,772
Accum. D&A	1,813	1,762
Net PP&E	$ 1,979	$ 2,010

Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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