Income Taxes - Components of Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022		Dec. 31, 2021
Current taxes
U.S. income taxes	$ 1,459	$ 1,679		$ 1,267
Foreign income taxes	161	219		207
State income taxes	180	189		112
Total current taxes	1,800	2,087		1,586
Deferred taxes (benefits)
U.S. income tax benefits	(533)	(275)		(163)
Foreign income (tax benefits) taxes	(1,046)	(28)		69
State income tax benefits	(80)	(169)		(122)
Total deferred tax benefits	(1,659)	(472)		(216)
Total income taxes	$ 141	$ 1,615	[1]	$ 1,370	[1]

[1] Amounts have been restated to reflect the adoption of Targeted Improvements to the Accounting for Long-Duration Contracts in 2023. See Note 2 to the Consolidated Financial Statements for further information.