Commitments and Contingencies (Changes in the Warranty and Self-Insurance Liability) (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Aug. 31, 2020		Aug. 31, 2019		Aug. 31, 2020	Aug. 31, 2019
Changes in the Warranty Liability
Balance at beginning of period		$ 92,844		$ 83,030		$ 88,839	$ 82,490
Warranties issued		6,326		9,067		21,960	23,500
Payments		(4,823)		(5,925)		(16,452)	(17,018)
Standard and Extended Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties		0		0		0	(2,800)
Balance at end of period		94,347		86,172		94,347	86,172
Movement In Self Insurance Reserve [Roll Forward]
Balance at beginning of period		178,081		170,978		177,765	176,841
Self-insurance expense	[1]	3,545		4,802		9,522	12,844
Payments		2,483	[2]	5,162	[2]	3,178	19,067
Balance at end of period		$ 184,109		$ 170,618		$ 184,109	$ 170,618

[1] (a) These expenses are included in selling, general and administrative expenses and are largely offset by contributions from subcontractors participating in the wrap-up policy.

[2] (b) Includes net changes in estimated probable insurance and other recoveries, which are recorded in receivables, to present our self-insurance liability on a gross basis.