Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2024	Sep. 30, 2024	Sep. 30, 2023
Decrease (increase) in current assets:
Receivables, net		$ 1,382	$ (709)
Inventories		574	(720)
Prepaid expenses and other		265	(40)
Increase (decrease) in current liabilities:
Accounts payable		(1,081)	656
Accrued expenses		(93)	(31)
Taxes other than income taxes payable		(114)	(222)
Income taxes payable		(138)	(629)
Changes in current assets and current liabilities		795	(1,695)
Cash flows related to interest and income taxes
Interest paid in excess of amount capitalized, including interest on finance leases		374	372
Income taxes paid, net		835	3,098
Operating cash flows
Operating Leases		392	316
Finance Leases		87	81
Financing cash flows
Finance Leases		173	190
Changes in lease balances resulting from new and modified leases, operating leases		346	343
Changes in lease balances resulting from new and modified leases, finance leases		312	$ 84
Supplemental Cash Flow Information (Textual)
Increase in noncontrolling interest, conversion of IEnova Revolver debt to equity	$ 457	457
Variable Interest Entity, Primary Beneficiary [Member] \| IEnova Revolver [Member] \| Line of Credit [Member] \| Central Mexico Terminals [Member]
Supplemental Cash Flow Information (Textual)
Debt conversion, debt amount converted	$ 457	$ 457

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