Leases Leases - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2019		Jun. 30, 2018	Jun. 30, 2019		Jun. 30, 2018
Sale Leaseback Transaction, Lease Terms					We lease certain real property assets from VICI (each a “Lease Agreement,” and, collectively, the “Lease Agreements”): (i) for Caesars Palace Las Vegas, (ii) for a portfolio of properties at various locations throughout the United States, (iii) for Harrah’s Joliet Hotel & Casino and (iv) for Harrah’s Las Vegas. The Lease Agreements provide for annual fixed rent (subject to escalation) of $773 million during an initial period, then rent consisting of both base rent and variable percentage rent elements. The Lease Agreements have a 15-year initial term and four five-year renewal options, subject to certain restrictions on extension applicable to certain of the leased properties. The Lease Agreements include escalation provisions beginning in year two of the initial term and continuing through the renewal terms. The Lease Agreements also include provisions for contingent rental payments calculated, in part, based on increases or decreases of net revenue of the underlying lease properties, commencing in year eight of the initial term and continuing through the renewal terms.
Revenue from Contract with Customer, Including Assessed Tax		$ 2,222		$ 2,119	$ 4,337		$ 4,091
Lessor, Operating Lease, Term of Contract		5 years			5 years
Occupancy [Member]
Revenue from Contract with Customer, Including Assessed Tax		$ 407	[1]	388	$ 793	[1]	755
Food and Beverage [Member]
Revenue from Contract with Customer, Including Assessed Tax		407	[1]	$ 391	805	[1]	$ 774
Lease revenue	[1]	$ 12			$ 27
Minimum [Member]
Lessee, Operating Lease, Term of Contract-Low End		1 year			1 year
Lessor, Operating Lease, Term of Contract		1 year			1 year
Maximum [Member]
Lessee, Operating Lease, Term of Contract-Low End		72 years			72 years
Lessee, Finance Lease, Term of Contract		3 years			3 years
Lessor, Operating Lease, Term of Contract		86 years			86 years

[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 are no longer considered contract revenue under ASC 606, Revenue from Contracts with Customers. A portion of these balances relate to lease revenues under ASC 842. See Note 7 for further details.