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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
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Feb. 28, 2023 | Feb. 28, 2022
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 | $ 851 | $ 742
Fair Value, Measurements, Recurring | Financial Services | Loans held-for-sale |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |
Lennar Other unrealized loss from technology investments | (31,462) | (27,387)
Fair Value, Measurements, Recurring | Financial Services | Mortgage loan commitments |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |
Lennar Other unrealized loss from technology investments | (48,844) | 13,797
Fair Value, Measurements, Recurring | Financial Services | Forward contracts |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |
Lennar Other unrealized loss from technology investments | 91,509 | 9,900
Fair Value, Measurements, Recurring | Financial Services | Forward options |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |
Lennar Other unrealized loss from technology investments | (852) | 0
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 | 851 | 742
Fair Value, Measurements, Recurring | Lennar Other | Equity Securities |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |
Lennar Other unrealized loss from technology investments | $ (23,954) | $ (395,170)

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580 + Details
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