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Notes Payable (Narrative) (Details) - USD ($)
12 Months Ended
Jan. 29, 2013
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2013
May. 31, 2015
Feb. 17, 2015
Mar. 25, 2014
Oct. 29, 2013
Jul. 31, 2012
Feb. 07, 2012
Jul. 30, 2009
Apr. 03, 2006
Debt Instrument [Line Items]                        
Line of Credit Facility, Current Borrowing Capacity   $ 275,000,000     $ 200,000,000              
Line of Credit Facility, Significant Subsidiary Threshold, Percent   5.00%                    
Line of Credit Facility, Non Guarantor Subsidiary Threshold, Percent   10.00%                    
Incremental Common Shares Attributable to Conversion of Debt Securities   8,402,000 8,402,000 7,044,000                
Letters of Credit Outstanding, Amount   $ 33,400,000 $ 26,700,000                  
Gain (loss) on early extinguishment of debt   0 0 $ 10,448,000                
Primarily inventories carrying value   136,100,000                    
Repayments of Long-term Debt   199,906,000 0 225,394,000                
Proceeds from Issuance of Senior Long-term Debt   250,000,000 $ 400,000,000 $ 680,000,000                
Long-term Debt, Fiscal Year Maturity [Abstract]                        
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2013   35,700,000                    
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2014   265,000,000                    
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2015   300,000,000                    
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2016   630,000,000                    
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2017   350,000,000                    
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due thereafter   $ 1,050,000,000                    
Convertible senior notes due February 1, 2019 at 1.375%                        
Debt Instrument [Line Items]                        
Senior notes, rate 1.375% 1.375% 1.375%                  
Convertible Notes Payable [Member] | Convertible senior notes due February 1, 2019 at 1.375%                        
Debt Instrument [Line Items]                        
Conversion Price Premium 100.00%                      
Incremental Common Shares Attributable to Conversion of Debt Securities 8,401,831                      
Percentage of Principal Amount for Purchase of Notes if Fundamental Change   100.00%                    
Senior notes $ 230,000,000                      
Senior notes, rate   1.375% 1.375% 1.375%                
Debt Conversion, Converted Instrument, Shares Issued 36.5297                      
Debt Instrument, Convertible, Conversion Price $ 27.37                      
Proceeds from Convertible Debt       $ 222,700,000                
Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member]                        
Debt Instrument [Line Items]                        
Senior notes, rate       700.00%                
Senior Notes [Member]                        
Debt Instrument [Line Items]                        
Repayments of Senior Debt       $ 215,100,000                
Percentage of principal amount for purchase of notes if change in control   101.00%                    
Senior Notes [Member] | Senior Notes Due Two Thousand Twenty Three At Seven Point Six Two Five Percent [Domain]                        
Debt Instrument [Line Items]                        
Conversion Price Premium           100.00%            
Senior notes           $ 250,000,000            
Proceeds from Issuance of Senior Long-term Debt   $ 245,400,000                    
Senior notes, rate   7.625%                    
Senior Notes [Member] | Senior notes due May 15, 2019 at 4.75%                        
Debt Instrument [Line Items]                        
Conversion Price Premium             100.00%          
Senior notes             $ 400,000,000          
Senior notes, rate   4.75% 4.75%                  
Senior Notes [Member] | Senior notes due June 15, 2015 at 6 1/4%                        
Debt Instrument [Line Items]                        
Repayments of Long-term Debt   $ 199,900,000                    
Senior notes, rate   6.25% 6.25%                
Senior Notes [Member] | Senior notes due September 15, 2022 at 7.50%                        
Debt Instrument [Line Items]                        
Conversion Price Premium                 100.00%      
Senior notes                 $ 350,000,000      
Senior notes, rate   7.00% 7.00% 7.00%                
Senior Notes [Member] | Senior notes due December 15, 2021 at 7.00%                        
Debt Instrument [Line Items]                        
Conversion Price Premium               100.00%        
Senior notes               $ 450,000,000        
Senior notes, rate   7.50% 7.50% 7.50%                
Senior Notes [Member] | Senior notes due September 15, 2017 at 9.10%                        
Debt Instrument [Line Items]                        
Conversion Price Premium                     100.00%  
Senior notes                     $ 265,000,000  
Senior notes, rate   9.10% 9.10% 9.10%                
Senior Notes [Member] | Senior notes due June 15, 2018 at 7 1/4%                        
Debt Instrument [Line Items]                        
Conversion Price Premium                       100.00%
Senior notes                       $ 300,000,000
Senior notes, rate   7.25% 7.25% 7.25%                
Senior Notes [Member] | Senior notes due March 15, 2020 at 8.00%                        
Debt Instrument [Line Items]                        
Conversion Price Premium                   100.00%    
Senior notes                   $ 350,000,000    
Senior notes, rate   8.00% 8.00% 8.00%                
Senior notes due May 15, 2019 at 4.75%                        
Debt Instrument [Line Items]                        
Proceeds from Issuance of Senior Long-term Debt     $ 394,600,000                  
Revolving Credit Facility [Member]                        
Debt Instrument [Line Items]                        
Line of Credit Facility, Expiration Date   Aug. 07, 2019                    
Line of Credit Facility, Maximum Borrowing Capacity   $ 450,000,000                    
Line of Credit Facility, Amount Outstanding   0                    
Line of Credit Facility, Remaining Borrowing Capacity   250,700,000                    
Letter of Credit [Member]                        
Debt Instrument [Line Items]                        
Line of Credit Facility, Current Borrowing Capacity   137,500,000                    
Line of Credit Facility, Amount Outstanding   24,296,000.000                    
Line of Credit Facility, Remaining Borrowing Capacity   113,200,000                    
LOC Facilities [Member]                        
Debt Instrument [Line Items]                        
Letters of Credit Outstanding, Amount   $ 9,100,000 $ 26,700,000                  
Minimum | Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member]                        
Debt Instrument [Line Items]                        
Senior notes, rate   400.00% 500.00% 0.00%                
Minimum | Revolving Credit Facility [Member]                        
Debt Instrument [Line Items]                        
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage   0.30%                    
Maximum | Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member]                        
Debt Instrument [Line Items]                        
Senior notes, rate   700.00% 700.00%                  
Maximum | Revolving Credit Facility [Member]                        
Debt Instrument [Line Items]                        
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage   0.50%