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Commitments and Contingencies (Details Textual) (USD $) | 3 Months Ended | 12 Months Ended |  | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended |
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Aug. 31, 2013 | May 31, 2012 | Aug. 31, 2011 | Nov. 30, 2013 | Nov. 30, 2012 | Nov. 30, 2011 | Nov. 30, 2010 | Nov. 30, 2013 Water Intrusion [Member] community Home | Aug. 31, 2013 Water Intrusion [Member] | May 31, 2013 Water Intrusion [Member] | Feb. 28, 2013 Water Intrusion [Member] | Nov. 30, 2012 Water Intrusion [Member] | Nov. 30, 2013 Water Intrusion [Member] community Home | May 31, 2013 Damages from Product Defects [Member] | Nov. 30, 2013 Damages from Product Defects [Member] | Nov. 30, 2012 Damages from Product Defects [Member] | Nov. 30, 2011 Damages from Product Defects [Member] | Nov. 30, 2013 FLORIDA Damages from Product Defects [Member] Lawsuit | Nov. 30, 2013 Class Action Lawsuits [Member] Damages from Product Defects [Member] Lawsuit | Nov. 30, 2013 Florida lawsuit [Member] Damages from Product Defects [Member] Lawsuit
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum warranty on electrical and other building systems |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product Liability Accrual, Component Amount |  |  |  |  |  |  |  |  |  |  | $ 28,900,000 |  |  |  |  | $ 28,900,000 |  |  |  |  |  |  |
Number of Affected Homes |  |  |  |  |  |  |  |  |  |  | 1,464 |  |  |  |  | 1,464 |  |  |  |  |  |  |
Accumulated Number of affected homes on which repairs were resolved. |  |  |  |  |  |  |  |  |  |  | 754 |  |  |  |  | 754 |  |  |  |  |  |  |
Number of Affected Homes, Period Increase (Decrease) |  |  |  |  |  |  |  |  |  |  | 687 |  |  |  |  | 687 |  |  |  |  |  |  |
Standard Product Warranty Accrual, Payments |  |  |  | 45,338,000 |  | 19,701,000 |  | 25,024,000 |  |  |  |  |  |  |  | 32,700,000 |  | 500,000 | 2,900,000 | 13,700,000 |  |  |
Cummulative Payments Made as Repair Costs for Affected Homes |  |  |  |  |  |  |  |  |  |  | 36,700,000 |  |  |  |  | 36,700,000 |  |  |  |  |  |  |
Estimated Repair Costs for Affected Homes |  |  |  |  |  |  |  |  |  |  | 65,600,000 |  |  |  |  | 65,600,000 |  |  |  |  |  |  |
Number of Affected Attached Home Communities |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  | 2 |  |  |  |  |  |  |
Number of Affected Communities |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  | 1 |  |  |  |  |  |  |
Product Liability Contingency, Loss Exposure Not Accrued, Best Estimate |  |  |  | 6,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of lawsuits in which company is a defendant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 1 | 2
Payments for Legal Settlements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000 |  |  |  |  |  |
Maximum Warranty on Electrical Heating Cooling Plumbing and Other Building Systems |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Structural warranty provided by the company |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warranty for other components of a home |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's warranty liability |  |  |  | 48,704,000 |  | 47,822,000 |  | 67,693,000 |  | 93,988,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance Recoveries | 16,500,000 | 10,000,000 |  |  |  | 26,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's estimated liabilities for construction defect |  |  |  | 92,214,000 |  | 93,349,000 |  | 94,823,000 |  | 95,665,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Expenses associated with self-insurance |  |  |  | 8,239,000 | [1] | 7,894,000 | [1] | 7,220,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product Warranty Accrual, Preexisting, Increase (Decrease) |  | 11,200,000 | 7,400,000 | (31,959,000) | [2] | 8,586,000 | [2] | 6,123,000 | [2] |  | (8,500,000) | (5,900,000) | (15,900,000) | (1,600,000) | (2,600,000) |  |  |  |  |  |  |  |
Performance bonds |  |  |  | 410,800,000 |  | 286,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount |  |  |  | 41,500,000 |  | 41,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deposits under Land Option and Other Similar Contracts |  |  |  | 41,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non refundable deposits related to land option and other similar contracts |  |  |  | 41,565,000 |  | 25,682,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of credit |  |  |  | 100,000 |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate Purchase Price Associated with Land Option and Other Similar Contracts |  |  |  | $ 1,151,496,000 |  | $ 625,335,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | a)These expenses are included in selling, general and administrative expenses and largely offset by contributions from subcontractors participating in the wrap-up policy.
[2] | (b)Adjustments in 2013 were comprised of charges associated with water intrusion-related issues in central and southwest Florida, while in 2012, favorable warranty adjustments were partly offset by such water intrusion-related charges. In 2011, favorable warranty adjustments were partly offset by the impact of our consolidation of a previously unconsolidated joint venture.

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