Variable Interest Entities (Details) (USD $)	Nov. 30, 2013	Nov. 30, 2012
Variable Interest Entity [Line Items]
Cash Deposits	$ 41,565,000	$ 25,682,000
Aggregate Purchase Price	1,151,496,000	625,335,000
Preacquisition costs on land option contracts and other similar contracts	31,000,000	25,400,000
Outstanding letters of credit	100,000	500,000
Increase in inventories and accrued expenses and other liabilities	8,900,000	4,100,000
Unconsolidated VIEs [Member]
Variable Interest Entity [Line Items]
Cash Deposits	11,063,000	8,463,000
Aggregate Purchase Price	616,000,000	327,196,000
Other land option contracts and other similar contracts [Member]
Variable Interest Entity [Line Items]
Cash Deposits	30,502,000	17,219,000
Aggregate Purchase Price	$ 535,496,000	$ 298,139,000