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Inventory Impairments and Land Option Contract Abandonments (Valuation Inputs) (Details) | 12 Months Ended
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Nov. 30, 2021 USD ($) delivery | Nov. 30, 2020 USD ($) delivery | Nov. 30, 2019 USD ($) delivery
Minimum |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Average selling price | $ | [1] | $ 471,000 |  | $ 301,600 |  | $ 315,000
Deliveries per month | delivery | [1] | 4 |  | 1 |  | 1
Discount rate | [1] | 18.00% |  | 17.00% |  | 17.00%
Maximum |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Average selling price | $ | [1] | $ 949,400 |  | $ 1,127,100 |  | $ 1,045,400
Deliveries per month | delivery | [1] | 5 |  | 4 |  | 4
Discount rate |  | 19.00% | [1] | 18.00% | [1] | 17.00%
[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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