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Document And Entity Information	12 Months Ended
	Dec. 31, 2012
Document And Entity Information [Abstract]
Entity Registrant Name	CHURCHILL DOWNS INC
Entity Central Index Key	0000020212
Document Type	8-K
Document Period End Date	Dec. 31, 2012
Amendment Flag	false

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The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other".

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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