Commitments and Contingencies (Changes in the Warranty and Self-Insurance Liability) (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Aug. 31, 2019		Aug. 31, 2018		Aug. 31, 2019	Aug. 31, 2018
Changes in the Warranty Liability
Balance at beginning of period		$ 83,030		$ 76,404		$ 82,490	$ 69,798
Warranties issued		9,067		9,590		23,500	27,243
Payments		(5,925)		(6,023)		(17,018)	(17,070)
Balance at end of period		86,172		79,971		86,172	79,971
Movement In Self Insurance Reserve [Roll Forward]
Balance at beginning of period		170,978		176,715		176,841	177,695
Self-insurance expense	[1]	4,802		5,554		12,844	14,264
Payments		(5,162)	[2]	(3,496)	[2]	(19,067)	(13,186)
Balance at end of period		170,618		178,773		170,618	178,773
Standard and Extended Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties		$ 0		$ 0		$ (2,800)	$ 0

[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.