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Commitments And Contingencies - Loss Contingencies (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Sep. 30, 2014 | Oct. 04, 2012
Loss Contingencies [Line Items] |  |
Pennsylvania Out-of-state ADW tax | 10.00% |
Pennsylvania ADW Tax refund | $ 1.9 |
Other Assets |  | $ 2.9

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- Definition Refund of Pennsylvania ADW Tax + References No definition available. + Details
Name: | chdn_PennsylvaniaADWTaxrefund
Namespace Prefix: | chdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Tax percent that Pennyslvania requires out-of-state companies to pay on Advance Deposit Wagering (ADW) wagers. + References No definition available. + Details
Name: | chdn_PennsylvaniaOutofstateADWtax
Namespace Prefix: | chdn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
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Data Type: | xbrli:stringItemType
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- Definition The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet. + 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 210.5-02.17) -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 17 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 7 + Details
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Period Type: | instant