Document and Entity Information (USD $)	6 Months Ended
	May 31, 2011	May 31, 2010
Entity Registrant Name	INTERNATIONAL SPEEDWAY CORP
Entity Central Index Key	0000051548
Document Type	10-Q
Document Period End Date	May 31, 2011
Amendment Flag	false
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--11-30
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float		$ 829,968,887.95
Class A Common Stock $.01 Par Value
Entity Common Stock, Shares Outstanding	27,392,499
Class B Common Stock $.01 Par Value
Entity Common Stock, Shares Outstanding	20,284,935