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EXCEL - IDEA: XBRL DOCUMENT - INTERNATIONAL SPEEDWAY CORPFinancial_Report.xls
10-Q - 10-Q - INTERNATIONAL SPEEDWAY CORPd357767d10q.htm
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v2.4.0.6
Capital Stock - Additional Information (Detail) (Class A Common Stock $.01 Par Value, Stock Repurchase Plan, USD $)
In Millions, except Share data, unless otherwise specified
6 Months Ended
May 31, 2012
Class A Common Stock $.01 Par Value | Stock Repurchase Plan
 
Schedule of Capitalization, Equity [Line Items]  
Stock Purchase Plan, authorized purchase amount $ 330.0
Stock Purchase Plan, purchased shares to date 7,063,962
Stock Purchase Plan, purchased amount to date 268.3
Stock Purchase Plan, remaining repurchase authority $ 61.7