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v2.4.1.9

Other Intangible Assets Other Intangible Assets (Details) (USD $) | 12 Months Ended |
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jul. 17, 2013
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | $ 238,865,000 us-gaap_FiniteLivedIntangibleAssetsGross | $ 76,002,000 us-gaap_FiniteLivedIntangibleAssetsGross |  |
Accumulated amortization | (47,236,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (36,196,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |  |
Net carrying amount | 191,629,000 us-gaap_FiniteLivedIntangibleAssetsNet | 39,806,000 us-gaap_FiniteLivedIntangibleAssetsNet |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] |  |  |  |
Net carrying amount | 549,972,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill | 198,149,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill |  |
Amortization expense | 13,300,000 us-gaap_AmortizationOfIntangibleAssets | 12,200,000 us-gaap_AmortizationOfIntangibleAssets | 11,200,000 us-gaap_AmortizationOfIntangibleAssets |
Annual license fees paid | 2,300,000 chdn_AnnualLicenseFees |  |  |
Oxford Acquisition [Member] |  |  |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  | 3,800,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = chdn_OxfordAcquisitionMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  |  |  | 60,900,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets / us-gaap_BusinessAcquisitionAxis = chdn_OxfordAcquisitionMember
Calder |  |  |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] |  |  |  |
Annual license fees paid | 2,300,000 chdn_AnnualLicenseFees / chdn_CasinoAxis = chdn_CalderMember | 2,300,000 chdn_AnnualLicenseFees / chdn_CasinoAxis = chdn_CalderMember |  |
Slots gaming rights |  |  |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] |  |  |  |
Net carrying amount | 128,890,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_ContractualRightsMember | 128,890,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_ContractualRightsMember |  |
Trademarks |  |  |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] |  |  |  |
Net carrying amount | 225,729,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember | 25,729,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |  |
Illinois Horseracing Equity Trust |  |  |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] |  |  |  |
Net carrying amount | 3,307,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = chdn_EquityTrustMember | 3,307,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = chdn_EquityTrustMember |  |
Other |  |  |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] |  |  |  |
Net carrying amount | 417,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 417,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  |
Favorable contracts |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 11,000,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_FavorableContractsMember | 11,000,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_FavorableContractsMember |  |
Accumulated amortization | (4,907,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_FavorableContractsMember | (4,260,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_FavorableContractsMember |  |
Net carrying amount | 6,093,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_FavorableContractsMember | 6,740,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_FavorableContractsMember |  |
Customer Relationships [Member] |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 89,203,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 56,540,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |  |
Accumulated amortization | (39,399,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | (30,464,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |  |
Net carrying amount | 49,804,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 26,076,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |  |
Slot gaming license |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 2,250,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LicensingAgreementsMember | 2,250,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LicensingAgreementsMember |  |
Accumulated amortization | (1,125,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LicensingAgreementsMember | (1,125,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LicensingAgreementsMember |  |
Net carrying amount | 1,125,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LicensingAgreementsMember | 1,125,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LicensingAgreementsMember |  |
Table Games License [Member] |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 2,493,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_TableGamesLicenseMember |  |  |
Accumulated amortization | (180,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_TableGamesLicenseMember |  |  |
Technology-Based Intangible Assets [Member] |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 87,000,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember |  |
Accumulated amortization | (931,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember |  |
Net carrying amount | 86,069,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember | 0 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember |  |
In Process Research and Development [Member] |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 12,700,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember |  |
Accumulated amortization | (105,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember |  |
Net carrying amount | 12,595,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember | 0 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember |  |
Other |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 3,719,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 3,719,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  |
Accumulated amortization | (326,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | (297,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  |
Net carrying amount | 3,393,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 3,422,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  |
Strategic Developer Relationships [Member] |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 30,500,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_StrategicDeveloperRelationshipsMember | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_StrategicDeveloperRelationshipsMember |  |
Accumulated amortization | (263,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_StrategicDeveloperRelationshipsMember | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_StrategicDeveloperRelationshipsMember |  |
Net carrying amount | 30,237,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_StrategicDeveloperRelationshipsMember | 0 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_StrategicDeveloperRelationshipsMember |  |
Oxford Acquisition [Member] | Table Games License [Member] |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 400,000 us-gaap_FiniteLivedIntangibleAssetsGross / chdn_CasinoByLocationAxis = chdn_OxfordAcquisitionMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = chdn_TableGamesLicenseMember |  |  |
Harlows Casino [Member] | Customer Relationships [Member] |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 2,800,000 us-gaap_FiniteLivedIntangibleAssetsGross / chdn_CasinoByLocationAxis = chdn_HarlowsCasinoMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |  |  |
Harlows Casino [Member] | Other |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 400,000 us-gaap_FiniteLivedIntangibleAssetsGross / chdn_CasinoByLocationAxis = chdn_HarlowsCasinoMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  |  |
Big Fish Games [Member] |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |
Gross carrying amount | 162,900,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = chdn_BigFishGamesMember |  |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] |  |  |  |
Net carrying amount | $ 200,000,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = chdn_BigFishGamesMember |  |  |

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