Commitments and Contingencies (Changes in the Warranty Liability) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014	Feb. 28, 2015	Nov. 30, 2014	Feb. 28, 2014	Nov. 30, 2013
Loss Contingencies [Line Items]
Self Insurance Reserve		$ 80,136	$ 90,458	$ 80,136	$ 90,458	$ 82,747	$ 86,574	$ 90,416	$ 92,214
Expenses Associated with Self Insurance	[1]	4,790	3,037	7,225	5,653
Payments, Net of Recoveries for Self Insurance	[2]	(7,401)	(2,995)	(13,663)	(7,409)
Changes in the Warranty Liability
Balance at beginning of period		45,357	43,419	45,196	48,704
Warranties issued		4,751	4,360	8,884	7,786
Payments		(7,047)	(11,451)	(14,642)	(20,162)
Adjustments	[3]	3,411	4,609	7,034	4,609
Balance at end of period		46,472	40,937	46,472	40,937
Water Intrusion [Member]
Changes in the Warranty Liability
Payments		$ (3,400)	$ (8,100)	$ (7,500)	$ (14,100)

[1] 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] Recoveries are reflected in the period we receive funds from subcontractors and/or their insurers.

[3] As discussed below, adjustments for the three months and six months ended May 31, 2015 and 2014 were primarily comprised of a reclassification of estimated minimum probable recoveries to receivables. Adjustments for the three months and six months ended May 31, 2014 also included a reclassification of estimated minimum probable recoveries to establish a separate accrual for a water intrusion-related inquiry.