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Notes Payable - Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended
Nov. 22, 2019
Nov. 04, 2019
Mar. 08, 2019
Feb. 20, 2019
Feb. 01, 2019
Nov. 30, 2019
Nov. 30, 2020
Nov. 30, 2019
Nov. 30, 2018
Nov. 30, 2020
Nov. 30, 2020
Oct. 29, 2013
Jan. 29, 2013
Debt Instrument [Line Items]                          
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net           $ 9,100,000 $ 7,500,000 $ 9,100,000          
Line of Credit Facility, Current Borrowing Capacity             800,000,000.0            
Letters of credit outstanding           34,700,000 42,100,000 34,700,000          
Primarily inventories carrying value             27,100,000            
Repayments of Long-term Debt             0 986,231,000 $ 300,000,000        
Loss on early extinguishment of debt           $ (6,800,000) 0 (6,800,000) 0        
Proceeds from issuance of debt             0 $ 705,250,000 $ 0        
Proceeds from Debt, Net of Issuance Costs       $ 400,000,000.0                  
Long-term Debt, Maturities, Repayments of Principal in Year Four             700,000            
Long-term Debt, Fiscal Year Maturity [Abstract]                          
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2021             2,100,000            
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2022             800,700,000            
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2023             351,200,000            
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2024             700,000            
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2025             0            
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due thereafter             $ 600,000,000.0            
Convertible senior notes due February 1, 2019 at 1.375%                          
Debt Instrument [Line Items]                          
Senior notes, rate                         1.375%
Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member]                          
Debt Instrument [Line Items]                          
Senior notes, rate           7.00%   7.00%          
Senior Notes                          
Debt Instrument [Line Items]                          
Percentage of principal amount for purchase of notes if change in control                   101.00%      
Senior Notes | Senior Notes Due Two Thousand Twenty Nine At Four Point Eight Percent                          
Debt Instrument [Line Items]                          
Senior notes, rate                   4.80% 4.80%    
Proceeds from issuance of debt   $ 300,000,000.0                      
Proceeds from Debt, Net of Issuance Costs   $ 296,300,000                      
Debt Instrument, Redemption Price, Percentage   100.00%                      
Conversion Price Premium                       100.00%  
Senior Notes | Convertible senior notes due February 1, 2019 at 1.375%                          
Debt Instrument [Line Items]                          
Repayments of Long-term Debt         $ 230,000,000.0                
Senior notes, rate         1.375%                
Senior Notes | Senior Notes Due Two Thousand Twenty Seven At Six Point Eight Seven Five Percent                          
Debt Instrument [Line Items]                          
Senior notes, rate                   6.875% 6.875%    
Proceeds from issuance of debt       300,000,000.0                  
Debt Instrument, Redemption Price, Percentage             100.00%            
Conversion Price Premium                       100.00%  
Senior Notes | Senior Notes Due Two Thousand Twenty Three At Seven Point Six Two Five Percent                          
Debt Instrument [Line Items]                          
Senior notes, rate                   7.625%      
Proceeds from issuance of debt       $ 100,000,000.0                  
Debt Instrument, Redemption Price, Percentage             105.25%            
Conversion Price Premium                       100.00%  
Senior Notes | Senior notes due May 15, 2019 at 4.75%                          
Debt Instrument [Line Items]                          
Repayments of Long-term Debt     $ 400,000,000.0                    
Senior notes, rate     4.75%                    
Senior Notes | Senior notes due September 15, 2022 at 7.50%                          
Debt Instrument [Line Items]                          
Senior notes, rate                   7.50%      
Senior Notes | Senior notes due December 15, 2021 at 7.00%                          
Debt Instrument [Line Items]                          
Senior notes, rate                   7.00%      
Conversion Price Premium                       100.00%  
Senior Notes | Senior notes due March 15, 2020 at 8.00%                          
Debt Instrument [Line Items]                          
Repayments of Long-term Debt $ 350,000,000.0                        
Redemption of Long Term Debt $ 356,200,000                        
Senior notes, rate 8.00%                        
Revolving Credit Facility [Member]                          
Debt Instrument [Line Items]                          
Line of Credit Facility, Maximum Borrowing Capacity             $ 1,000,000,000.00            
Line of Credit Facility, Amount Outstanding             0            
Line of Credit Facility, Remaining Borrowing Capacity             787,600,000            
Letter of Credit [Member]                          
Debt Instrument [Line Items]                          
Line of Credit Facility, Current Borrowing Capacity             250,000,000.0            
Line of Credit Facility, Amount Outstanding             12,400,000            
Line of Credit Facility, Remaining Borrowing Capacity             237,600,000            
LOC Facilities                          
Debt Instrument [Line Items]                          
Line of Credit Facility, Current Borrowing Capacity             50,000,000.0            
Letters of credit outstanding           $ 15,800,000 $ 29,700,000 $ 15,800,000          
Minimum | Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member]                          
Debt Instrument [Line Items]                          
Senior notes, rate                   4.50%      
Minimum | Revolving Credit Facility [Member]                          
Debt Instrument [Line Items]                          
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage             0.20%            
Maximum | Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member]                          
Debt Instrument [Line Items]                          
Senior notes, rate                   6.00%      
Maximum | Revolving Credit Facility [Member]                          
Debt Instrument [Line Items]                          
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage             0.35%