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Inventory Impairments and Land Option Contract Abandonments (Narratives) (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Aug. 31, 2022 USD ($) property delivery lot Rate | Aug. 31, 2021 USD ($) delivery Rate | Aug. 31, 2022 USD ($) property delivery lot Rate | Aug. 31, 2021 USD ($) delivery Rate | Nov. 30, 2021 USD ($) property
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |  |  |  |  |  |  |  |  |
Number of land parcels or communities evaluated for recoverability | property |  | 0 |  |  |  | 0 |  |  |  | 0
Inventory impairment charges |  | $ 2,600,000 |  | $ 6,300,000 |  | $ 2,600,000 |  | $ 9,900,000 |  |
Aggregate carrying value of inventory impacted by pretax, noncash inventory impairment charges |  | $ 76,700,000 |  |  |  | $ 76,700,000 |  |  |  | $ 87,700,000
Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges |  | 7 |  |  |  | 7 |  |  |  | 11
Minimum [Member] |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |  |  |  |  |  |  |  |  |
Average Selling price | [1] | $ 0 |  | $ 949,400 |  | $ 0 |  | $ 471,000 |  |
Deliveries per month | delivery | [1] | 0 |  | 4 |  | 0 |  | 4 |  |
Minimum [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |  |  |  |  |  |  |  |  |
Discount Rate, Percent | Rate | [1] | 0.00% |  | 18.00% |  | 0.00% |  | 18.00% |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |  |  |  |  |  |  |  |  |
Average Selling price |  | $ 0 |  | $ 0 | [1] | $ 0 | [1] | $ 949,400 | [1] |
Deliveries per month | delivery |  | 0 |  | 4 | [1] | 0 | [1] | 5 | [1] |
Discount Rate, Percent |  |  |  |  |  |  |  | 19.00% |  |
Maximum [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |  |  |  |  |  |  |  |  |
Discount Rate, Percent | Rate |  | 0.00% | [1] | 18.00% |  | 0.00% | [1] |  |  |
Land Option Contract Abandonment [Member] |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |  |  |  |  |  |  |  |  |
Land option contract abandonment charges |  | $ 5,900,000 |  | $ 400,000 |  | $ 6,800,000 |  | $ 1,300,000 |  |
[1] | The ranges of inputs used in each period primarily reflect differences between the housing markets where each impacted community is located, rather than fluctuations in prevailing market conditions.

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