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.