Income Taxes - Income Tax Allocation (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Loss before income taxes		$ (375)	$ (7)	$ (622)	$ (28)
Income Tax Expense (Benefit)	[1],[2]	$ (60)	$ (36)	$ (89)	$ (23)
Effective Income Tax Rate Reconciliation, Percent		16.00%	514.30%	14.30%	82.10%

[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.