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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.

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