Income Taxes - Components of income Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current income tax:
Federal	$ 551	$ 527	$ 531
State and local	79	63	80
Foreign	47	28	36
Total current income tax	677	618	647
Deferred income tax:
Federal	(62)	(309)	(297)
State and local	(3)	(16)	(13)
Foreign	(22)	4	2
Total deferred income tax	(87)	(321)	(308)
Total income tax provision	$ 590	$ 297	$ 339