Debt - Additional Information (Details) - USD ($)			3 Months Ended		9 Months Ended
		Jul. 07, 2017	Sep. 30, 2017		Sep. 30, 2017		Sep. 30, 2016	May 12, 2017	Apr. 27, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Long-term Debt, Gross			$ 6,555,000,000		$ 6,555,000,000
Current portion of long-term debt			39,000,000		39,000,000					$ 89,000,000
Increase in CGPH's existing Senior Secured Term Loan					585,000,000		$ 80,000,000
Secured Debt [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			0		0
Variable Interest Entity, Primary Beneficiary [Member]
Debt Instrument [Line Items]
Current portion of long-term debt			14,000,000		14,000,000					21,000,000
CERP
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]		4,556,000,000		4,556,000,000
Current portion of long-term debt			25,000,000		25,000,000					68,000,000
CERP | Line of Credit [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	[2]		0		$ 0
CERP | Line of Credit [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					6.00%
CERP | Line of Credit [Member] | Revolving Credit Facility [Member] | Amended Revolver
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity at Original Rate			211,000,000		$ 211,000,000
CERP | Line of Credit [Member] | Revolving Credit Facility [Member] | Amended Revolver | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					3.50%
CERP | Secured Debt [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			$ 2,406,000,000	[3]	$ 2,406,000,000	[3]		$ 2,400,000,000
Debt Instrument, Interest Rate, Increase (Decrease)			(2.50%)
CERP | Secured Debt [Member] | Term Loan [Member] | Beginning December 31, 2018
Debt Instrument [Line Items]
Debt Instrument, Quarterly Principal Payment			$ 16,000,000
CERP | Secured Debt [Member] | Term Loan [Member] | Debt Instrument, Redemption, Period Three [Member]
Debt Instrument [Line Items]
Debt Instrument, Quarterly Principal Payment			31,000,000
CERP | Restructuring of CEOC and Other
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt					(1,000,000)
CGP | Variable Interest Entity, Primary Beneficiary [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]		1,999,000,000		1,999,000,000
Current portion of long-term debt			$ 14,000,000		$ 14,000,000					$ 21,000,000
CGP | Variable Interest Entity, Primary Beneficiary [Member] | Line of Credit [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					5.25%
CGP | Variable Interest Entity, Primary Beneficiary [Member] | Line of Credit [Member] | Revolving Credit Facility [Member] | Amended Revolver | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					3.00%
CGP | Variable Interest Entity, Primary Beneficiary [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)			(2.25%)
CGP | Variable Interest Entity, Primary Beneficiary [Member] | Secured Debt [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	[4]		$ 0		$ 0
Line of Credit Facility, Current Borrowing Capacity			150,000,000		150,000,000
CGP | Variable Interest Entity, Primary Beneficiary [Member] | Secured Debt [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			$ 1,311,000,000	[5]	1,311,000,000	[5]			$ 1,300,000,000
Increase in CGPH's existing Senior Secured Term Loan					175,000,000
Gain (Loss) on Extinguishment of Debt					$ (4,000,000)
CGP | Variable Interest Entity, Primary Beneficiary [Member] | Horseshoe Casino Baltimore [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 15,000,000
CGP | Variable Interest Entity, Primary Beneficiary [Member] | Horseshoe Casino Baltimore [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		300,000,000
Increase in CGPH's existing Senior Secured Term Loan		$ 15,000,000
CGP | Variable Interest Entity, Primary Beneficiary [Member] | Horseshoe Casino Baltimore [Member] | Secured Debt [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		4.00%			7.00%

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

[2] Variable interest rate for the $211 million amended revolver is LIBOR plus 3.50%, down from 6.00% prior to the amendment. The variable interest rate on the remaining $59 million is determined by adding LIBOR to a base rate of 6.00%

[3] Variable interest rate was amended during the 2017 second quarter from 6.00% plus the greater of LIBOR or a 1% floor to 3.50% plus the greater of LIBOR or a 1% floor.

[4] Variable interest rate calculated as LIBOR plus 3.00%, down from 5.25% prior to the amendment.

[5] Variable interest rate was amended during the 2017 second quarter from 5.25% plus the greater of LIBOR or a 1% floor to 3.00% plus the greater of LIBOR or a 1% floor