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Accrued Expenses and Other Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2012
May 31, 2012
Nov. 30, 2011
Aug. 31, 2011
May 31, 2011
Nov. 30, 2010
Payables and Accruals [Abstract]            
Construction defect and other litigation liabilities $ 106,503   $ 101,017      
Employee compensation and related benefits 85,366   76,960      
Warranty liability 47,326 50,866 67,693 70,499 82,630 93,988
Accrued interest payable 43,585   43,129      
Liabilities related to inventory not owned 20,043   23,903      
Real estate and business taxes 6,350   10,770      
Other 32,969   50,934      
Total $ 342,142   $ 374,406