Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 31, 2025	Jun. 30, 2026	Jun. 30, 2025
Decrease (increase) in current assets:
Receivables, net		$ (4,037)	$ (112)
Inventories		(70)	418
Prepaid expenses and other		(185)	98
Increase (decrease) in current liabilities:
Accounts payable		4,347	(613)
Accrued expenses		(77)	112
Taxes other than income taxes payable		4	45
Income taxes payable		421	(116)
Changes in current assets and current liabilities		403	(168)
Cash flows related to interest and income taxes
Interest paid in excess of amount capitalized, including interest on finance leases		264	263
Income taxes paid, net		830	283
Operating cash flows
Operating Leases		277	261
Finance Leases		58	57
Financing cash flows
Finance Leases		123	129
Changes in lease balances resulting from new and modified leases, operating leases		270	266
Changes in lease balances resulting from new and modified leases, finance leases		$ 12	18
Operating Segments [Member] \| Refining [Member]
Supplemental Cash Flow Information (Textual)
Asset retirement obligation, liabilities incurred	$ 337		337
Blender's Tax Credit Receivable [Member]
Supplemental Cash Flow Information (Textual)
Collection of blender's tax credit receivable			$ 246

Amount of asset retirement obligations incurred during the period.

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