Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Current Tax Provision, Federal	$ 387	$ 324	$ (100)
Current Tax Provision, State	60	45	(58)
Current Tax Provision, Foreign	427	305	541
Current Income Tax Expense Benefit	874	674	383
Future Tax Provision, Federal	(26)	(264)	121
Future Tax Provision, State	41	258	56
Future Tax Provision, Foreign	(103)	(93)	(139)
Deferred income tax (benefit) provision	(88)	(99)	38
Effective income tax rate	$ 786	$ 575	$ 421