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Financial Instruments and Fair Value Disclosures - (Carrying Amounts And Estimated Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands | Aug. 31, 2024 | Nov. 30, 2023
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Lennar Financial Services | Level 3 | Carrying Value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Loans held-for-investment | $ 63,995 | $ 55,463
Investments held-to-maturity | 138,045 | 140,676
Lennar Financial Services | Level 3 | Fair Value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Loans held-for-investment | 64,172 | 55,463
Investments held-to-maturity | 141,500 | 139,396
Lennar Financial Services | Level 1 | Carrying Value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes and other debts payable | 1,545,416 | 2,163,805
Lennar Financial Services | Level 1 | Fair Value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes and other debts payable | 1,545,806 | 2,164,441
Homebuilding | Level 1 | Carrying Value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes and other debts payable | 2,263,256 | 2,816,482
Homebuilding | Level 1 | Fair Value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes and other debts payable | 2,272,515 | 2,785,712
Multifamily | Level 1 | Carrying Value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes payable | 0 | 3,741
Multifamily | Level 1 | Fair Value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes payable | $ 0 | $ 3,741

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