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Natural Disasters (Details) - Churchill Downs - Hail [Member] - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2012
Business Interruption Loss [Line Items] |  |
Insurance Deductible |  | $ 0.5
Insurance Settlements, Cash Settlement Received | $ 0.4 |

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- Definition Insurance Deductible + References No definition available. + Details
Name: | chdn_InsuranceDeductible
Namespace Prefix: | chdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Insurance Settlements, Cash Settlement Received + References No definition available. + Details
Name: | chdn_InsuranceSettlementsCashSettlementReceived
Namespace Prefix: | chdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- 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_BusinessInterruptionLossLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | chdn_CasinoByLocationAxis=chdn_ChurchillDownsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_BusinessInterruptionLossAxis=chdn_HailMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |