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Variable Interest Entities (Details) (USD $)	Nov. 30, 2014	Nov. 30, 2013
Variable Interest Entity [Line Items]
Cash Deposits	$ 33,059,000	$ 41,565,000
Aggregate Purchase Price	958,470,000	1,151,496,000
Acquisition Costs Related To Land Option Contracts And Other Similar Contracts	48,000,000	31,000,000
Outstanding letters of credit	100,000	100,000
Increase in inventories and accrued expenses and other liabilities	3,100,000	8,900,000
Unconsolidated VIEs [Member]
Variable Interest Entity [Line Items]
Cash Deposits	10,633,000	11,063,000
Aggregate Purchase Price	520,628,000	616,000,000
Other land option contracts and other similar contracts [Member]
Variable Interest Entity [Line Items]
Cash Deposits	22,426,000	30,502,000
Aggregate Purchase Price	$ 437,842,000	$ 535,496,000