Commitments and Contingencies (Changes in the Warranty and Self-Insurance Liability) (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		May 31, 2020		May 31, 2019		May 31, 2020	May 31, 2019
Changes in the Warranty Liability
Balance at beginning of period		$ 90,213		$ 84,191		$ 88,839	$ 82,490
Warranties issued		7,271		8,139		15,634	14,433
Payments		(4,640)		(6,500)		(11,629)	(11,093)
Standard and Extended Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties		0		(2,800)		0	(2,800)
Balance at end of period		92,844		83,030		92,844	83,030
Movement In Self Insurance Reserve [Roll Forward]
Balance at beginning of period		181,481		177,862		177,765	176,841
Self-insurance expense	[1]	1,343		4,295		5,977	8,042
Payments		(4,743)	[2]	(11,179)	[2]	(5,661)	(13,905)
Balance at end of period		$ 178,081		$ 170,978		$ 178,081	$ 170,978

[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.