Income Taxes - Income Tax Benefit/(Provision) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Current - Federal		$ (9)	$ 148	$ (381)
Current - State		(1)	(7)	(3)
Deferred - Federal		170	1,835	46
Deferred - State		(39)	23	10
Current - Ouside of the U.S.		(9)	(4)	1
Deferred - Ouside of the U.S.		9	0	0
Income Tax Expense (Benefit)	[1],[2]	$ 121	$ 1,995	$ (327)

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

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