Income Taxes - Applicable Income Taxes Included in the Consolidated Statements of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current income tax expense:
U.S. Federal income taxes	$ 647	$ 570	$ 657
State and local income taxes	96	126	102
Foreign income taxes	2	11	2
Total current income tax expense	745	707	761
Deferred income tax (benefit) expense:
U.S. Federal income taxes	(81)	(31)	(21)
State and local income taxes	(23)	(29)	8
Foreign income taxes	(2)	0	(1)
Total deferred income tax benefit	(106)	(60)	(14)
Applicable income tax expense	$ 639	$ 647	$ 747