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Financial Instruments and Fair Value Disclosures - (Schedule Of Gains And Losses Of Financial Instruments) (Details) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Aug. 31, 2024 | Aug. 31, 2023 | Aug. 31, 2024 | Aug. 31, 2023
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |  |
Changes in fair value included in other comprehensive income (loss), net of tax | $ 444 | $ 208 | $ 2,161 | $ 1,632
Fair Value, Measurements, Recurring | Lennar Financial Services | Loans held-for-sale |  |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | 30,482 | (9,795) | 1,617 | (33,358)
Fair Value, Measurements, Recurring | Lennar Financial Services | Mortgage loan commitments |  |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | 22,400 | 18,139 | (9,702) | (16,922)
Fair Value, Measurements, Recurring | Lennar Financial Services | Forward contracts |  |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | (31,664) | (9,379) | 41,209 | 63,323
Fair Value, Measurements, Recurring | Lennar Financial Services | Forward options |  |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | 2,687 | (485) | 1,633 | (1,437)
Fair Value, Measurements, Recurring | Lennar Other |  |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |  |
Changes in fair value included in other comprehensive income (loss), net of tax | 444 | 208 | 2,161 | 1,632
Fair Value, Measurements, Recurring | Lennar Other | Equity Securities |  |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | $ 39,123 | $ (15,713) | $ 12,472 | $ (14,170)

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- Definition Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-9 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-10A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-11 + Details
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