v3.19.3

Cover Page	9 Months Ended
Cover Page	Aug. 31, 2019 shares
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Aug. 31, 2019
Document Transition Report	false
Entity File Number	000-02384
Entity Registrant Name	INTERNATIONAL SPEEDWAY CORPORATION
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	59-0709342
Entity Address, Address Line One	ONE DAYTONA BOULEVARD,
Entity Address, City or Town	DAYTONA BEACH,
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32114
City Area Code	386
Local Phone Number	254-2700
Title of 12(b) Security	Class A Common Stock - $.01 par value
Trading Symbol	ISCA
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000051548
Current Fiscal Year End Date	--11-30
Common Stock
Document Information [Line Items]
Title of 12(g) Security	Common Stock — $.10 par valu
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	23,874,277
Class B Common Stock
Document Information [Line Items]
Title of 12(g) Security	Class B Common Stock — $.01 par value
Entity Common Stock, Shares Outstanding	19,610,940

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INTERNATIONAL SPEEDWAY CORP 10-Q