Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Decrease (increase) in current assets:
Receivables, net	$ (1,435)	$ (2,643)
Inventories	(703)	(232)
Prepaid expenses and other	(201)	28
Increase (decrease) in current liabilities:
Accounts payable	746	3,624
Accrued expenses	38	538
Taxes other than income taxes payable	(103)	200
Income taxes payable	41	115
Changes in current assets and current liabilities	(1,617)	1,630
Cash Flows Related to Interest and Income Taxes
Interest paid in excess of amount capitalized, including interest on finance leases	383	397
Income taxes paid (refunded), net	2,630	(876)
Operating cash flows
Operating Leases	296	296
Finance Leases	59	53
Investing cash flows
Operating Leases	0	1
Financing cash flows
Finance Leases	129	97
Changes in lease balances resulting from new and modified leases, Operating Leases	132	366
Changes in lease balances resulting from new and modified leases, Finance Leases	$ 156	93
Domestic Tax Authority [Member] \| Internal Revenue Service (IRS) [Member]
Supplemental Cash Flow Information (Textual)
Proceeds from income tax refund		$ 962

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