Commitments and Contingencies (Changes in Warranty Liability) (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
Changes in the Company's warranty liability
Balance at beginning of year		$ 91,646	$ 88,839	$ 82,490
Warranties issued		34,627	29,505	35,480
Payments		(26,120)	(23,098)	(23,531)
Adjustments		(4,000)	(3,600)	(5,600)
Balance at end of year		96,153	91,646	88,839
Movement In Self Insurance Reserve [Roll Forward]
Balance at beginning of year		194,180	177,765	176,841
Self-insurance provided		19,665	15,399	19,185
Payments		(29,369)	(4,375)	(9,398)
Balance at end of year		189,131	194,180	177,765
Increase (decrease) in self insurance reserve		6,800	(4,000)	(2,500)
Self Insurance
Movement In Self Insurance Reserve [Roll Forward]
Adjustments	[1]	$ 4,655	$ 5,391	$ (8,863)

[1] Includes net changes in estimated probable recoveries related to self-insurance, which are recorded in receivables, to present our self-insurance liability on a gross basis; an adjustment to increase our previously recorded liability by $6.8 million in 2021; and adjustments to reduce our previously recorded liability by $4.0 million in 2020 and $2.5 million in 2019.