Segment Reporting - Condensed Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total assets	$ 25,980	$ 25,345
Total liabilities	23,649	23,134
Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total assets	12,960	13,138
Total liabilities	5,844	5,896
Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total assets	8,088	8,509
Total liabilities	5,770	5,730
Operating Segments | All Other
Segment Reporting Information [Line Items]
Total assets	8,063	6,829
Total liabilities	12,046	11,519
Elimination
Segment Reporting Information [Line Items]
Total assets	(3,131)	(3,131)
Total liabilities	$ (11)	$ (11)