Income Taxes - Income Tax Expense (Benefit) by Current and Deferred (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal and foreign
Current	$ 553	$ 425	$ 415
Deferred	17	40	95
State and local
Current	129	128	126
Deferred	10	2	5
Income tax expense	$ 709	$ 595	$ 641