Segment Reporting (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Feb. 29, 2012	Feb. 28, 2011
Segment Reporting Information [Line Items]
Revenues	$ 127,755	$ 149,213
Depreciation and amortization	19,459	19,146
Operating income	29,699	39,355
Capital expenditures	12,796	11,699
Total assets	2,035,816	1,966,628
Equity investments	150,402	43,774
Motorsports Event
Segment Reporting Information [Line Items]
Revenues	122,950	143,755
Depreciation and amortization	17,854	17,348
Operating income	31,383	40,749
Capital expenditures	12,036	8,879
Total assets	1,659,820	1,692,485
All Other
Segment Reporting Information [Line Items]
Revenues	4,805	5,458
Depreciation and amortization	1,605	1,798
Operating income	(1,684)	(1,394)
Capital expenditures	760	2,820
Total assets	375,996	274,143
Equity investments	$ 150,402	$ 43,774