Revenue Recognition - Receivables (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Contract with Customer, Asset, Net		$ 338	$ 327
Real estate leases		11	15
Other		100	115
Receivables, net		449	457
Casino [Member]
Loans and Leases Receivable Disclosure [Line Items]
Contract with Customer, Asset, Net		161	188
Food and Beverage [Member]
Loans and Leases Receivable Disclosure [Line Items]
Contract with Customer, Asset, Net	[1]	84	62
Entertainment and other
Loans and Leases Receivable Disclosure [Line Items]
Contract with Customer, Asset, Net		$ 93	$ 77

[1] (1) As a result of the adoption of ASC 842, as of January 1, 2019, revenue generated from the lease components of lodging arrangements and conventions as well as their associated receivables are no longer considered contract revenue or contract receivables under ASC 606, Revenue from Contracts with Customers. A portion of this balance relates to lease receivables under ASC 842. See Note 7 for further details.