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Financial Instruments and Fair Value Disclosures - (Fair Value Measured On Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Feb. 28, 2025 | Nov. 30, 2024
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Level 1 | Lennar Financial Services | Forward options |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Derivative asset | $ 2,693 | $ 1,458
Level 1 | Lennar Other |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Investments in equity securities | 112,154 | 204,777
Level 3 | Lennar Financial Services |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Mortgage servicing rights | 3,297 | 3,463
Level 3 | Lennar Other |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Investments available-for-sale | 40,401 | 40,578
Residential | Loans held-for-sale | Lennar Financial Services |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Aggregate principal balance | 1,785,606 | 2,263,310
Aggregate fair value of loans (below) in excess of principal balance | (32,503) | (62,907)
Residential | Level 1 | Lennar Financial Services |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Loans held for sale | 1,753,103 | 2,200,402
Commercial | Loans held-for-sale | Lennar Financial Services |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Aggregate principal balance | 83,075 | 50,020
Aggregate fair value of loans (below) in excess of principal balance | (281) | 296
Commercial | Level 3 | Lennar Financial Services |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Loans held for sale | $ 82,794 | $ 50,316

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