Employee Benefit Plans - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Deferred Compensation Liability, Current		$ 0
Increase (Decrease) in Accrued Liabilities		(101,000,000)	$ 15,000,000	$ 87,000,000
Deferred Compensation Liability, Classified, Noncurrent	$ 63,000,000	$ 53,000,000	63,000,000
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay		6.00%
Defined Contribution Plan, Expected Future Employer Contributions, Next Fiscal Year, Description		During 2018, the company match was the greater of 25% up to 6% of earnings that the individual elected to contribute with no cap or 50% up to 6% of eligible earnings that the individual elected to contribute with an individual cap of $600. Beginning January 1, 2019, the match increases to 50% up to 6% of eligible earnings that the individual elects to contribute with no individual cap (subject to further limitations for certain higher-salaried employees)
Payment for Pension Benefits		$ 5,000,000
Defined Benefit Plan, Plan Assets, Contributions by Employer		6,000,000
Trust for Benefit of Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets Held-in-trust, Noncurrent	125,000,000	$ 99,000,000	125,000,000
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent		50.00%
Employer annual cap per participant		$ 600
Contribution expense		14,000,000	7,000,000	$ 6,000,000
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)		19,000,000	1,000,000
Defined Benefit Plan, Plan Assets, Amount	212,000,000	180,000,000	212,000,000
Defined Benefit Plan, Benefit Obligation	278,000,000	217,000,000	278,000,000
Defined Benefit Plan, Funded (Unfunded) Status of Plan	66,000,000	$ 37,000,000	66,000,000
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets		4.90%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		2.90%
Hilton Matter [Member] | Settled Litigation [Member] | Caesars Entertainment Operating Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Increase (Decrease) in Accrued Liabilities	5,000,000	$ 5,000,000
Loss Contingency, Receivable, Proceeds	12,000,000
Liabilities, Other than Long-term Debt, Noncurrent	$ 7,000,000	$ 2,000,000	$ 7,000,000
Noncash or Part Noncash Acquisition, Employee Benefit Liabilities Assumed	31.75%		31.75%
Southern Nevada Culinary and Bartenders Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plans, Period Contributions, Significance of Contributions [true false]			true	true
Legacy Plan of the National Retirement Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plans, Period Contributions, Significance of Contributions [true false]			true	true
Local 68 Engineers Union Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plans, Period Contributions, Significance of Contributions [true false]			true	true