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Inventory Impairments and Land Option Contract Abandonments (Narratives) (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Aug. 31, 2023 USD ($) community | Aug. 31, 2022 USD ($) | Aug. 31, 2023 USD ($) community | Aug. 31, 2022 USD ($) | Nov. 30, 2022 USD ($) community
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Number of land parcels or communities evaluated for recoverability | community | 4 |  | 4 |  | 5
Carrying value of communities of land parcels evaluated for impairment | $ 66,200,000 |  | $ 66,200,000 |  | $ 118,700,000
Inventory impairment charges | 0 | $ 2,600,000 | 0 | $ 2,600,000 |
Aggregate carrying value of inventory impacted by pretax, noncash inventory impairment charges | $ 80,900,000 |  | $ 80,900,000 |  | $ 102,900,000
Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges | community | 6 |  | 6 |  | 8
Land Option Contract Abandonment |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Land option abandonments | $ 600,000 | $ 5,900,000 | $ 10,200,000 | $ 6,800,000 |

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