Commitments and Contingencies (Changes in the Warranty and Self-Insurance Liability) (Details) - USD ($) $ in Thousands		3 Months Ended
		Feb. 28, 2019	Feb. 28, 2018
Changes in the Warranty Liability
Balance at beginning of period		$ 82,490	$ 69,798
Warranties issued		6,294	7,764
Payments		(4,593)	(5,717)
Balance at end of period		84,191	71,845
Movement In Self Insurance Reserve [Roll Forward]
Balance at beginning of period		176,841	177,695
Self-insurance expense	[1]	3,747	4,401
Payments	[2]	(2,726)	(1,401)
Balance at end of period		$ 177,862	$ 180,695

[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.