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v2.4.1.9

Acquisition and Purchase Accounting (Details) (USD $) | 3 Months Ended | 0 Months Ended |
--- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Sep. 19, 2014 | Dec. 31, 2014
Consideration Transferred |  |  |  |
Escrow shares returned to authorized and unissued (in shares) | 25,290 eri_EscrowSharesReturnedToAuthorizedShareCapital |  |  |
Estimated fair values of the assets acquired and liabilities assumed |  |  |  |
Goodwill | $ 66,826,000 us-gaap_Goodwill |  |  | $ 66,826,000 us-gaap_Goodwill
Business Acquisition, Pro Forma Revenue |  | 171,858,000 us-gaap_BusinessAcquisitionsProFormaRevenue |  |
Business Acquisition, Pro Forma Net Income (Loss) |  | (3,127,000)us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss |  |
Business Acquisition, Pro Forma Earnings Per Share, Basic |  | $ (0.07)us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic |  |
Business Acquisitions Weighted Average Basic Shares Outstanding Pro Forma |  | 46,386,342 eri_BusinessAcquisitionsWeightedAverageBasicSharesOutstandingProForma |  |
MTR Gaming |  |  |  |
Acquisition and purchase accounting |  |  |  |
Total consideration paid |  |  | 103,011,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Outstanding Share Calculation |  |  |  |
Number of shares outstanding on the Merger Date |  |  | 28,386,084 us-gaap_SharesOutstanding / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Total shares outstanding-before share repurchase |  |  | 52,171,465 eri_SharesOutstandingBeforeShareRepurchase / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Number of shares acquired at $6.05 per share based on $35.0 million cash election |  |  | (5,785,123)eri_SharesAcquiredBasedOnCashElection / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Share price (in dollars per share) |  |  | $ 6.05 eri_StockRepurchasePricePerShare / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Amount of cash election |  |  | 35,000,000 eri_BusinessCombinationAmountOfCashElection / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Total ERI shares outstanding at Merger Date |  |  | 46,386,342 eri_TotalSharesOutstandingAtMergerDate / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Consideration Transferred |  |  |  |
MTR Gaming shares acquired at $6.05 per share based on $35.0 million cash election |  |  | (5,785,123,000)eri_AmountOfSharesAcquiredBasedOnCashElection / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Fair value of shares |  |  | 102,334,000 eri_BusinessCombinationConsiderationTransferredFairValueOfShares / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Fair value of stock options |  |  | 677,000 eri_BusinessCombinationConsiderationTransferredFairValueOfStockOptions / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Number of ERI's shares to be received for each outstanding share or vested RSUs of the acquiree's |  |  | 1 eri_BusinessCombinationConversionPerShare / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Estimated fair values of the assets acquired and liabilities assumed |  |  |  |
Current and other assets |  |  | 75,031,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Property and equipment |  |  | 289,211,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Goodwill |  |  | 66,826,000 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Intangible assets |  |  | 473,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Other noncurrent assets |  |  | 20,381,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Total assets |  |  | 924,449,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Current liabilities |  |  | 46,446,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Long-term debt |  |  | 624,877,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Deferred income taxes |  |  | 143,104,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Other noncurrent liabilities |  |  | 7,011,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Total liabilities assumed |  |  | 821,438,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
Net assets acquired |  |  | 103,011,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember |
MTR Gaming | Members of Resorts |  |  |  |
Outstanding Share Calculation |  |  |  |
Shares issued (in shares) |  |  | 23,286,202 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = eri_MTRGamingGroupIncMember / us-gaap_CounterpartyNameAxis = eri_MembersOfEldoradoResortsLLCMember |
Resorts |  |  |  |
Outstanding Share Calculation |  |  |  |
Ownership interest in combined entity (as a percent) |  |  | 50.20%eri_MergerTransactionPercentageOwnershipInterestInCombinedEntity / dei_LegalEntityAxis = eri_EldoradoResortsLLCMember |
Consideration Transferred |  |  |  |
Amounts paid for cash election |  |  | 5,000,000 eri_PaymentsToRepurchaseStockBusinessCombination / dei_LegalEntityAxis = eri_EldoradoResortsLLCMember |
MTR Gaming |  |  |  |
Outstanding Share Calculation |  |  |  |
Ownership interest in combined entity (as a percent) |  |  | 49.80%eri_MergerTransactionPercentageOwnershipInterestInCombinedEntity / dei_LegalEntityAxis = eri_MTRGamingGroupIncMember |
Consideration Transferred |  |  |  |
Number of MTR Gaming shares outstanding at the Merger Date |  |  | 28,386,084,000 us-gaap_CommonStockValueOutstanding / dei_LegalEntityAxis = eri_MTRGamingGroupIncMember |
Total net MTR Gaming shares |  |  | 23,100,140,000 eri_AmountOfTotalNetSharesOfAcquiee / dei_LegalEntityAxis = eri_MTRGamingGroupIncMember |
FMV of Common stock (in dollars per share) |  |  | $ 4.43 us-gaap_SharePrice / dei_LegalEntityAxis = eri_MTRGamingGroupIncMember |
Amounts paid for cash election |  |  | 30,000,000 eri_PaymentsToRepurchaseStockBusinessCombination / dei_LegalEntityAxis = eri_MTRGamingGroupIncMember |
MTR Gaming | Senior Secured Second Lien Notes |  |  |  |
Estimated fair values of the assets acquired and liabilities assumed |  |  |  |
Long-term debt, gross |  |  | 570,700,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = eri_SeniorSecuredSecondLienNotes11.5PercentMember / dei_LegalEntityAxis = eri_MTRGamingGroupIncMember |
MTR Gaming | Restricted stock units (RSUs) |  |  |  |
Outstanding Share Calculation |  |  |  |
RSUs that vested upon closing of the Merger (in shares) |  |  | 499,179 eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVested / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / dei_LegalEntityAxis = eri_MTRGamingGroupIncMember |
Consideration Transferred |  |  |  |
MTR Gaming RSUs that vested upon closing of the Merger |  |  | $ 499,179,000 eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / dei_LegalEntityAxis = eri_MTRGamingGroupIncMember |

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