Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current income tax expense (benefit):
U.S. federal	$ 69	$ 45	$ (14)
U.S. state and local	13	13	(6)
Non-U.S.	182	23	84
Total current income tax expense	264	81	64
Deferred income tax expense (benefit):
U.S. federal	(135)	11	(28)
U.S. state and local	(4)	0	1
Non-U.S.	(4)	2	(8)
Total deferred income tax expense (benefit)	(143)	13	(35)
Total income tax expense	$ 121	$ 94	$ 29