Natural Disasters (Details) (Churchill Downs, Hail [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Business Interruption Loss [Line Items]
Insurance Deductible		$ 0.5
Insurance Settlements, Partial Settlement Received		0.6
Insurance Settlements, Cash Settlement Received	0.4	1.1
Scenario, Forecast [Member]
Business Interruption Loss [Line Items]
Unusual or Infrequent Item, Net of Insurance Proceeds	$ 0.4

Difference of unusual or infrequent items gross less applicable insurance proceeds.

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

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

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+ Details