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Financial Services (Schedule of Assets and Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Feb. 28, 2014
Nov. 30, 2013
Feb. 28, 2013
Nov. 30, 2012
Assets        
Cash and cash equivalents $ 306,450 $ 532,523 $ 625,558 $ 525,688
Receivables 87,355 75,749    
Investments in unconsolidated joint ventures 60,648 130,192    
Other assets 110,487 107,076    
Total assets 3,248,172 3,193,635    
Liabilities        
Accounts payable and accrued expenses 524,298 504,458    
Total liabilities 2,350 2,593    
Financial services [Member]
        
Assets        
Cash and cash equivalents 3,181 2,428 1,514  
Receivables 699 2,084    
Investments in unconsolidated joint ventures 5,484 5,490    
Other assets 22 38    
Total assets 9,386 10,040    
Liabilities        
Accounts payable and accrued expenses $ 2,350 $ 2,593