Income Taxes (Components of Earnings Before Income Taxes Between Domestic and Foreign Jurisdictions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S.	$ (5,475)	$ (14,882)	$ (2,792)
Non-U.S.	442	406	533
Loss before income taxes	$ (5,033)	$ (14,476)	$ (2,259)