Income Taxes - Significant Components of Provision for Income Taxes Attributable to Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current income tax provision:
Federal taxes	$ 1,423	$ 2,125	$ 2,173
State taxes	382	423	485
International taxes	76	104	152
Total current provision	1,881	2,652	2,810
Deferred income tax provision (benefit):
Federal taxes	(547)	(662)	490
State taxes	(145)	(112)	91
International taxes	(31)	2	24
Total deferred provision (benefit)	(723)	(772)	605
Total income tax provision	$ 1,158	$ 1,880	$ 3,415

Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction.

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