Income Taxes - Significant Components of Provision for Income Taxes Attributable to Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current income tax provision:
Federal taxes	$ 2,125	$ 2,173	$ 1,676
State taxes	423	485	370
International taxes	104	152	67
Total current provision	2,652	2,810	2,113
Deferred income tax provision (benefit):
Federal taxes	(662)	490	(1,357)
State taxes	(112)	91	(266)
International taxes	2	24	(4)
Total deferred provision (benefit)	(772)	605	(1,627)
Total income tax provision	$ 1,880	$ 3,415	$ 486