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Financial Instruments and Fair Value Disclosure (Fair Value Assets Measured On Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring - Homebuilding - Level 3 - USD ($) $ in Thousands | 12 Months Ended
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Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Finished homes and construction in progress, carrying value | $ 32,364 | $ 176,637 | $ 218,942
Finished homes and construction in progress, fair value | 16,342 | 148,684 | 205,201
Finished homes and construction in progress, total gains and losses | (16,022) | (27,953) | (13,741)
Land and land under development, carrying value | 35,775 | 182,137 | 121,564
Land and land under development, fair value | 26,841 | 92,355 | 82,816
Land and land under development, total gains (losses) | (8,934) | (89,782) | (38,748)
Other assets, carrying value | 12,764 | 0 | 60,363
Other assets, fair value | 12,024 | 0 | 56,727
Other assets, total gains (loss) | $ (740) | $ 0 | $ (3,636)

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