Supplemental Cash Flow Information (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Increase in current assets:
Receivables, net			$ (387)	$ (1,619)	$ (4,382)
Inventories			(684)	(672)	(253)
Prepaid expenses and other			(34)	(180)	(22)
Increase (decrease) in current liabilities:
Accounts payable			(169)	521	6,301
Accrued expenses			(50)	(5)	253
Taxes other than income taxes payable			(226)	98	104
Income taxes payable			(776)	231	224
Changes in current assets and current liabilities			(2,326)	(1,626)	2,225
Cash Flows Related to Interest and Income Taxes
Interest paid in excess of amount capitalized, including interest on finance leases			562	570	598
Income taxes paid (refunded), net (see Note 15)			3,494	3,288	(842)
Operating cash flows
Operating Leases			428	395	397
Finance Leases			107	83	72
Investing cash flows
Operating Leases			0	0	1
Financing cash flows
Finance Leases			250	180	135
Changes in lease balances resulting from new and modified leases, Operating Leases	[1]		396	178	451
Changes in lease balances resulting from new and modified leases, Finance Leases	[1]		157	660	378
Diamond Green Diesel Holdings LLC (DGD) [Member] | DGD Port Arthur Plant [Member]
Financing cash flows
Changes in lease balances resulting from new and modified leases, Finance Leases		$ 500
U.S. [Member]
Cash Flows Related to Interest and Income Taxes
Income taxes paid (refunded), net (see Note 15)			$ 2,158	$ 2,396	(878)	[2]
U.S. [Member] | Internal Revenue Service (IRS) [Member]
Supplemental Cash Flow Information (Textual)
Refund received					$ 962

[1] Noncash activity for the year ended December 31, 2022 primarily included approximately $500 million for a finance lease ROU asset and related liability recognized in connection with the completion of the DGD Port Arthur Plant described in Note 5.

[2] This amount includes a refund of $962 million that we received related to our U.S. federal income tax return for 2020.