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RELATED PARTY DISCLOSURES AND TRANSACTIONS (Details) (USD $)
12 Months Ended
Nov. 30, 2014
Nov. 30, 2013
Nov. 30, 2012
Related Party Transaction [Line Items]      
Prize and point fund monies paid to NASCAR $ 134,500,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty $ 132,200,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty $ 128,700,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Receivables due from NASCAR and its affiliates 19,300,000us-gaap_DueFromRelatedParties 18,500,000us-gaap_DueFromRelatedParties  
Television broadcast and ancillary rights fees from continuing operations received from NASCAR for the NASCAR Sprint Cup, Nationwide and Camping World Truck series events recorded as part of motorsports related revenue 302,900,000us-gaap_RevenueFromRelatedParties 292,500,000us-gaap_RevenueFromRelatedParties 281,200,000us-gaap_RevenueFromRelatedParties
Net amount paid (received) from related party 10,500,000us-gaap_OtherOperatingIncomeExpenseNet 9,300,000us-gaap_OtherOperatingIncomeExpenseNet 8,600,000us-gaap_OtherOperatingIncomeExpenseNet
Revenue from related party for tickets and track rental fees 129,688,000us-gaap_AdmissionsRevenue 129,824,000us-gaap_AdmissionsRevenue 136,099,000us-gaap_AdmissionsRevenue
Majority Shareholder      
Related Party Transaction [Line Items]      
France Family Group, which contains NASCAR, ownership of voting interest in the Company 72.00%isca_PercentageOfOwnershipInterests
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_MajorityShareholderMember
   
NASCAR      
Related Party Transaction [Line Items]      
Allocation of broadcast rights fees for each NASCAR Sprint Cup, Nationwide or Camping World Truck series event 10.00%isca_PercentageOfGrossBroadcastRightsRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_NascarMember
   
NASCAR | Company's legal, risk management and transportation departments      
Related Party Transaction [Line Items]      
Percentage of reimbursement for compensation paid to certain personnel 50.00%isca_PercentageOfReimbursementForCompensationPaidToCertainPersonnel
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= isca_GroupOneMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_NascarMember
   
NASCAR | Certain receptionists      
Related Party Transaction [Line Items]      
Percentage of reimbursement for compensation paid to certain personnel 50.00%isca_PercentageOfReimbursementForCompensationPaidToCertainPersonnel
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= isca_GroupTwoMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_NascarMember
   
Event Promoter      
Related Party Transaction [Line Items]      
Allocation of broadcast rights fees for each NASCAR Sprint Cup, Nationwide or Camping World Truck series event 90.00%isca_PercentageOfGrossBroadcastRightsRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_EventPromoterMember
   
Prize money paid by event promoter as a percent of broadcast rights fees for each NASCAR Sprint Cup, Nationwide or Camping World Truck series event 25.00%isca_PercentageOfGrossBroadcastRightsRevenuePaidByEventPromoterAsPrizeMoneyForCompetitors
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_EventPromoterMember
   
Allocation Of gross broadcast rights revenue retained by the promoter 65.00%isca_PercentageOfGrossBroadcastRightsRevenueRetained
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_EventPromoterMember
   
Parent | NASCAR's legal department      
Related Party Transaction [Line Items]      
Percentage of reimbursement for compensation paid to certain personnel 50.00%isca_PercentageOfReimbursementForCompensationPaidToCertainPersonnel
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= isca_GroupThreeMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ParentMember
   
Grand American      
Related Party Transaction [Line Items]      
Sanction fees 1,300,000isca_SanctionFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyMember
1,300,000isca_SanctionFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyMember
1,200,000isca_SanctionFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyMember
AMA Pro Racing      
Related Party Transaction [Line Items]      
Sanction fees 500,000isca_SanctionFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyBMember
600,000isca_SanctionFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyBMember
600,000isca_SanctionFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyBMember
Certain members of the France Family Group      
Related Party Transaction [Line Items]      
Net amount paid (received) from related party (320,000)us-gaap_OtherOperatingIncomeExpenseNet
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyCMember
(398,000)us-gaap_OtherOperatingIncomeExpenseNet
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyCMember
(318,000)us-gaap_OtherOperatingIncomeExpenseNet
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyCMember
Crotty, Bartlett & Kelly, P.A. ("Crotty, Bartlett & Kelly")      
Related Party Transaction [Line Items]      
Professional fees 31,000us-gaap_ProfessionalFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyDMember
31,000us-gaap_ProfessionalFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyDMember
30,000us-gaap_ProfessionalFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyDMember
J. Hyatt Brown      
Related Party Transaction [Line Items]      
Professional fees 492,000us-gaap_ProfessionalFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyEMember
487,000us-gaap_ProfessionalFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyEMember
466,000us-gaap_ProfessionalFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyEMember
Revenue from related party for tickets and track rental fees 100,000us-gaap_AdmissionsRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyEMember
122,000us-gaap_AdmissionsRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyEMember
 
Christy F. Harris      
Related Party Transaction [Line Items]      
Professional fees $ 78,000us-gaap_ProfessionalFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyFMember
$ 114,000us-gaap_ProfessionalFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyFMember
$ 83,000us-gaap_ProfessionalFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= isca_RelatedPartyFMember