Basis of Presentation Basis of Presentation (Details) - USD ($)	May 22, 2019	May 31, 2019	Nov. 30, 2018
International Speedway Corporation (“ISC”) | France Family Group
Business Acquisition [Line Items]
Ownership interest held (percent)	74.70%
International Speedway Corporation (“ISC”) | Proposal | NASCAR Holdings, Inc. (“NASCAR Holdings”)
Business Acquisition [Line Items]
Proposed purchase price per share (in usd per share)	$ 45.00
Payments for termination fees	$ 117,000,000
Class A Common Stock
Business Acquisition [Line Items]
Common Stock, par value (in dollars per share)		$ 0.01	$ 0.01
Class B Common Stock
Business Acquisition [Line Items]
Common Stock, par value (in dollars per share)		$ 0.01	$ 0.01
France Family Group | Class A Common Stock
Business Acquisition [Line Items]
Common Stock, par value (in dollars per share)	$ 0.01
France Family Group | Class B Common Stock
Business Acquisition [Line Items]
Common Stock, par value (in dollars per share)	$ 0.01
NASCAR Holdings, Inc. (“NASCAR Holdings”) | International Speedway Corporation (“ISC”)
Business Acquisition [Line Items]
Payments for termination fees	$ 78,000,000
Payments for expense reimbursements	$ 15,000,000