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Notes Payable (Schedule of Notes Payable) (Details) - USD ($)
Nov. 30, 2021
Jun. 09, 2021
Nov. 30, 2020
Nov. 04, 2019
Feb. 20, 2019
Feb. 17, 2015
Jul. 31, 2012
Debt Instrument [Line Items]              
Notes payable $ 1,685,027,000   $ 1,747,175,000        
Mortgages and land contracts due to land sellers and other loans (at interest rates of 7% at November 30, 2013 and 6% to 7% at November 30, 2012)              
Debt Instrument [Line Items]              
Stated interest rate percentage 4.50%            
Notes payable $ 5,327,000   $ 4,667,000        
Mortgages and land contracts due to land sellers and other loans (at interest rates of 7% at November 30, 2013 and 6% to 7% at November 30, 2012) | Minimum              
Debt Instrument [Line Items]              
Stated interest rate percentage     4.50%        
Mortgages and land contracts due to land sellers and other loans (at interest rates of 7% at November 30, 2013 and 6% to 7% at November 30, 2012) | Maximum              
Debt Instrument [Line Items]              
Stated interest rate percentage     6.00%        
Senior Notes | 7.00% Senior notes due December 15, 2021              
Debt Instrument [Line Items]              
Stated interest rate percentage 7.00%            
Notes payable $ 0   $ 449,029,000        
Principal $ 450,000,000            
Senior Notes | 7.50% Senior notes due September 15, 2022              
Debt Instrument [Line Items]              
Stated interest rate percentage 7.50%            
Notes payable $ 349,471,000   348,846,000        
Principal [1]             $ 350,000,000
Effective interest rate             7.70%
Conversion price premium             100.00%
Senior Notes | 7.625% Senior notes due May 15, 2023              
Debt Instrument [Line Items]              
Stated interest rate percentage 7.625%            
Notes payable $ 350,788,000   351,281,000        
Principal [2]           $ 350,000,000  
Effective interest rate           7.50%  
Conversion price premium         100.00%    
Senior Notes | 6.875% Senior notes due June 15, 2027              
Debt Instrument [Line Items]              
Stated interest rate percentage 6.875%            
Notes payable $ 297,161,000   296,757,000        
Principal [2]         $ 300,000,000    
Effective interest rate         7.10%    
Conversion price premium         100.00%    
Senior Notes | 4.80% Senior notes due November 15, 2029              
Debt Instrument [Line Items]              
Stated interest rate percentage 4.80%            
Notes payable $ 296,905,000   296,595,000        
Principal [2]       $ 300,000,000      
Effective interest rate       5.00%      
Conversion price premium       100.00%      
Senior Notes | 4.00% Senior notes due June 15, 2031              
Debt Instrument [Line Items]              
Stated interest rate percentage 4.00% 4.00%          
Notes payable $ 385,375,000   $ 0        
Principal [2]   $ 390,000,000          
Effective interest rate       4.20%      
Conversion price premium   100.00%          
[1] At our option, these notes may be redeemed, in whole at any time or from time to time in part, at a redemption price equal to the greater of (i) 100% of the principal amount of the notes being redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest on the notes being redeemed (exclusive of interest accrued to the applicable redemption date), discounted to the redemption date at a defined rate, plus, in each case, accrued and unpaid interest on the notes being redeemed to the applicable redemption date.
[2] At our option, these notes may be redeemed, in whole at any time or from time to time in part, at a redemption price equal to the greater of (i) 100% of the principal amount of the notes being redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest on the notes being redeemed (exclusive of interest accrued to the applicable redemption date), discounted to the redemption date at a defined rate, plus, in each case, accrued and unpaid interest on the notes being redeemed to, but excluding, the applicable redemption date, except that six months prior to the stated maturity date for these notes and until their maturity, the redemption price will be equal to 100% of the principal amount of the notes being redeemed, plus, in each case, accrued and unpaid interest on the notes being redeemed to, but excluding, the applicable redemption date.