Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current
U.S. federal and state	$ 13	$ 14	$ 6
Non-U.S.	92	128	98
Total current	105	142	104
Deferred
U.S. federal and state	(104)	(47)	164
Non-U.S.	(33)	(17)	15
Total deferred	(137)	(64)	179
Total expense (benefit)	$ (32)	$ 78	$ 283