Segment Reporting - Condensed Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total assets	$ 25,345	$ 25,775
Total liabilities	23,134	22,437
All Other
Segment Reporting Information [Line Items]
Total assets	6,829	6,046
Total liabilities	11,519	11,267
Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total assets	13,138	13,987
Total liabilities	5,896	5,730
Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total assets	8,509	8,565
Total liabilities	5,730	5,143
Intersegment Eliminations
Segment Reporting Information [Line Items]
Total assets	(3,131)	(2,823)
Total liabilities	$ (11)	$ 297