Income Taxes - Income Tax Allocation (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Loss before income taxes		$ (247)	$ (21)
Income tax benefit/(provision)	[1],[2]	$ 29	$ (13)
Effective Income Tax Rate Reconciliation, Percent		11.70%	(61.90%)

[1] (1) Taxes are recorded at the consolidated level and not estimated or recorded to our Las Vegas and Other U.S. segments.

[2] (4) Taxes are recorded at the consolidated level and not estimated or recorded to our Las Vegas and Other U.S. segments