Subsequent Events Subsequent Events - Additional Information (Details) - USD ($) shares in Millions, $ in Millions			3 Months Ended
		Oct. 06, 2017	Dec. 31, 2017	Oct. 16, 2017	Sep. 30, 2017	Dec. 31, 2016
Subsequent Event [Line Items]
Long-term Debt, Gross					$ 6,555
Debt Instrument, Unamortized Discount					78	$ 110
CERP
Subsequent Event [Line Items]
Long-term Debt, Gross	[1]				4,556
Subsequent Event [Member]
Subsequent Event [Line Items]
Other Commitment, Due in Next Twelve Months		$ 640
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt		$ 1,235
Subsequent Event [Member] | Caesars Resort Collection [Member]
Subsequent Event [Line Items]
Long-term Debt, Description			Once the funds are released pending final regulatory approvals, we will use the net proceeds of the CRC Notes and the CRC Term Loan Facility, as well as available cash and borrowings under the CRC Revolving Credit Facility, to repay substantially all outstanding debt of CERP and CGPH.
Subsequent Event [Member] | Revolving Credit Facility [Member] | Caesars Resort Collection [Member]
Subsequent Event [Line Items]
Long-term Debt, Gross				$ 1,000
Subsequent Event [Member] | Secured Debt [Member] | London Interbank Offered Rate (LIBOR) [Member] | Caesars Resort Collection [Member]
Subsequent Event [Line Items]
Long-term Debt, Gross				4,700
Subsequent Event [Member] | Senior Notes [Member] | Caesars Resort Collection [Member]
Subsequent Event [Line Items]
Long-term Debt, Gross				$ 1,700
Subsequent Event [Member] | New CEOC [Member]
Subsequent Event [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		142
Business Combination, Consideration Transferred		$ 2,515
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities		$ 348
Subsequent Event [Member] | CAC
Subsequent Event [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		226
Caesars Entertainment Operating Company [Member]
Subsequent Event [Line Items]
Other Accrued Liabilities					$ 182	$ 195
Caesars Entertainment Operating Company [Member] | Restructuring of CEOC and Other | Subsequent Event [Member]
Subsequent Event [Line Items]
Other Accrued Liabilities		$ 126
Scenario, Forecast [Member] | CERP
Subsequent Event [Line Items]
Debt Instrument, Unamortized Discount			$ 45
Scenario, Forecast [Member] | CERP | Call Option [Member]
Subsequent Event [Line Items]
Debt Instrument, Unamortized Premium			131
Scenario, Forecast [Member] | Caesars Growth Properties Holdings, LLC [Member]
Subsequent Event [Line Items]
Debt Instrument, Unamortized Discount			$ 33
Scenario, Forecast [Member] | Subsequent Event [Member] | New CEOC [Member]
Subsequent Event [Line Items]
Operating Loss Carryforwards		$ 3,000

[1] See Note 17 for additional information about pending transactions related to CERP and CGPH’s debt and their organizational structures.