Commitments and Contingencies (Changes in the Warranty Liability) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Feb. 28, 2015		Feb. 28, 2014		Nov. 30, 2014	Nov. 30, 2013
Loss Contingencies [Line Items]
Self Insurance Reserve	$ 82,747		$ 90,416		$ 86,574	$ 92,214
Expenses Associated with Self Insurance	2,435	[1]	2,616	[1]
Payments, Net of Recoveries for Self Insurance	(6,262)	[2]	(4,414)	[2]
Changes in the Warranty Liability
Balance at beginning of period	45,196		48,704
Warranties issued	4,133		3,426
Payments	(7,595)		(8,711)
Adjustments	3,623	[3]	0	[3]
Balance at end of period	45,357		43,419
Water Intrusion [Member]
Changes in the Warranty Liability
Payments	$ (4,100)		$ (6,000)

[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 ended February 28, 2015 were comprised of a reclassification of estimated minimum probable recoveries to receivables and had no impact on our consolidated statement of operations for the period.