Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
U.S. Federal			$ 18	$ 2	$ 2
State			3	6	(3)
Foreign			62	69	59
Total current income tax provision			83	77	58
Deferred:
U.S. Federal			52	57	(134)
State			0	2	(2)
Foreign			(6)	(14)	(21)
Total deferred income tax provision (benefit)			46	45	(157)
Total income tax provision (benefit)			$ 129	$ 122	$ (99)
Tax cuts and jobs act of 2017, provisional amount income tax benefit		$ 173
Tax expense (benefit) related to the revaluation of its net deferred tax liabilities	$ 3	$ (10)