Represents the interest coverage ratio required to be maintained under financial covenants.

No definition available.

Name:	eri_DebtInstrumentCovenantInterestCoverageRatio
Namespace Prefix:	eri_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the interest coverage ratio required to be maintained under the financial covenants.

+ References

No definition available.

+ Details

Name:	eri_DebtInstrumentCovenantLeverageRatio
Namespace Prefix:	eri_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the floor rate of a debt instrument.

+ References

No definition available.

+ Details

Name:	eri_DebtInstrumentFloorRate
Namespace Prefix:	eri_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Rate of commitment fees for the unused borrowing capacity under the long-term financing arrangement that is available to the entity.

+ References

No definition available.

+ Details

Name:	eri_DebtInstrumentUnusedBorrowingCapacityRate
Namespace Prefix:	eri_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Subparagraph b
-Article 5

+ Details

Name:	us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=eri_TermLoanUnderSecuredCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=eri_RevolvingCreditFacilityUnderSecuredCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	eri_DebtInstrumentLeverageRatioPeriodAxis=eri_DebtInstrumentLeverageRatioPeriodOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	eri_DebtInstrumentLeverageRatioPeriodAxis=eri_DebtInstrumentLeverageRatioPeriodTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	eri_DebtInstrumentLeverageRatioPeriodAxis=eri_DebtInstrumentLeverageRatioPeriodThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	eri_DebtInstrumentLeverageRatioPeriodAxis=eri_DebtInstrumentLeverageRatioPeriodFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	eri_DebtInstrumentLeverageRatioPeriodAxis=eri_DebtInstrumentLeverageRatioPeriodFiveMember
Namespace Prefix:
Data Type:	na
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Period Type:

Long-Term Debt - Resorts Secured Credit Facility - (Details) $ in Millions		12 Months Ended
	Jul. 23, 2015	Dec. 31, 2015 USD ($)
New Term Loan
Debt instruments
Term of debt	7 years
New Revolving Credit Facility
Debt instruments
Term of debt	5 years
Available borrowing capacity		$ 56.5
Commitment fee on unused portion of the credit facility		0.50%
LIBOR \| New Term Loan
Debt instruments
Spread on variable rate (as a percent)		3.25%
Floor rate (as a percent)		1.00%
LIBOR \| Minimum \| New Term Loan
Debt instruments
Spread on variable rate (as a percent)		2.50%
LIBOR \| Maximum \| New Term Loan
Debt instruments
Spread on variable rate (as a percent)		3.25%
Base rate \| New Term Loan
Debt instruments
Spread on variable rate (as a percent)		2.25%
Base rate \| Minimum \| New Term Loan
Debt instruments
Spread on variable rate (as a percent)		1.50%
Base rate \| Maximum \| New Term Loan
Debt instruments
Spread on variable rate (as a percent)		2.25%
From the closing date through December 31, 2015
Debt instruments
Leverage ratio		6.75
From the closing date through December 31, 2015 \| Minimum
Debt instruments
Interest coverage ratio		2.50
From January 1, 2016 to December 31, 2017
Debt instruments
Leverage ratio		6.00
From January 1, 2018 and thereafter
Debt instruments
Leverage ratio		5.00
From January 1, 2016 through December 31, 2016 \| Minimum
Debt instruments
Interest coverage ratio		2.75
From January 1, 2017 and thereafter \| Minimum
Debt instruments
Interest coverage ratio		3.00