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Financial Instruments and Fair Value Disclosures - (Fair Value Assets Measured On Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring - Level 3 - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Aug. 31, 2025 | Aug. 31, 2024 | Aug. 31, 2025 | Aug. 31, 2024
Homebuilding |  |  |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |  |  |
Finished homes and construction in progress, carrying value | $ 479,233 | $ 120,811 | $ 1,221,892 | $ 313,120
Finished homes and construction in progress, fair value | 430,986 | 111,776 | 1,103,619 | 280,761
Finished homes and construction in progress, total losses, net | (48,247) | (9,035) | (118,273) | (32,359)
Land and land under development, carrying value |  |  | 191 | 0
Land and land under development, fair value |  |  | 134 | 0
Land and land under development, total losses, net |  |  | (57) | 0
Deposits and pre-acquisition costs on real estate, carrying value | 8,919 | 206 | 17,847 | 3,408
Deposits and pre-acquisition costs on real estate, fair value | 0 | 0 | 0 | 0
Deposits and pre-acquisition costs on real estate, net | (8,919) | (206) | (17,847) | (3,408)
Multifamily |  |  |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |  |  |
Land and land under development, carrying value | 0 | 139,980 | 10,716 | 139,980
Land and land under development, fair value | 0 | 49,970 |  | 49,970
Land and land under development, total losses, net | 0 | $ (90,010) | (10,716) | $ (90,010)
Lennar Financial Services |  |  |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |  |  |
Loans Held For Sale, Carrying Value | 61,001 |  | 61,001 |
Loans Held For Sale, Fair Value | 50,284 |  | 50,284 |
Loans Held For Sale, Net | $ (10,717) |  | $ (10,717) |

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