Income Taxes (Domestic and Foreign Components of Income Before Income Tax Provision) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ 1,299	$ 898	$ 691
Foreign	235	314	328
Income before income taxes	$ 1,534	$ 1,212	$ 1,019