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Mortgages and Notes Payable (Narratives) (Details) (USD $)
0 Months Ended 3 Months Ended
Jan. 29, 2013
Feb. 28, 2013
Feb. 29, 2012
Jan. 23, 2013
Nov. 30, 2012
Feb. 07, 2012
Feb. 07, 2012
Senior notes due March 15, 2020 at 8.00%
Jan. 29, 2013
Convertible senior notes due February 1, 2019 at 1.375%
Feb. 28, 2013
Senior notes due September 15, 2017 at 9.10%
Jul. 31, 2012
Senior notes due September 15, 2022 at 7.50%
Debt Instrument [Line Items]                    
Letters of Credit Outstanding, Amount   $ 43,700,000     $ 41,900,000          
Primarily Inventories Carrying Value   129,100,000                
Debt Instrument, Face Amount             350,000,000 230,000,000 265,000,000 350,000,000
Repayment of Aggregate Principal Amount of Senior Notes           340,000,000        
Total consideration paid to purchase the notes   0 340,481,000              
Gains (Losses) on Extinguishment of Debt   0 2,003,000              
Percentage of Principal Amount in Relation to Issued Value of Senior Notes               100.00%    
Convertible preferred stock, shares issued upon conversion 0.0365297                  
Debt Instrument, Convertible, Conversion Price $ 27.37                  
Debt Instrument, Convertible, Conversion Ratio 47.00%                  
Share Price       $ 18.62            
Convertible Stock, Shares Issued Upon Conversion 8,401,831                  
Percentage of Principal Amount in Relation to Redemption Value of Notes   100.00%                
Percentage of Principal Amount for Purchase of Notes if Change in Control   100.00%                
Proceeds from issuance of senior notes 223,100,000                  
Principal payments on senior notes, mortgages and land contracts                    
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2012   42,200,000                
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2013   91,800,000                
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2014   342,300,000                
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2015   1,300,000                
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2016   261,600,000                
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due thereafter   $ 1,220,000,000