Income Taxes (Schedule of Income Tax Provision (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current
U.S.	$ 0	$ 13	$ (8)
International	323	126	149
Total	323	139	141
Deferred
U.S.	(16)	308	1
International	23	(200)	(18)
Total	7	108	(17)
Income tax provision (benefit)	$ 330	$ 247	$ 124