Financial Instruments and Fair Value Disclosures - (Schedule Of Gains And Losses Of Financial Instruments) (Details) (Details) - USD ($) $ in Thousands	3 Months Ended
Feb. 28, 2025	Feb. 29, 2024
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	$ (178)	$ 362
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Forward contracts
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(48,463)	100,292
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Forward options
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Derivative, Gain (Loss) on Derivative, Net	1,134	(344)
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Interest Rate Swap
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(3,296)	1,554
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Loans held-for-sale
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Realized Investment Gains (Losses)	30,403	(46,052)
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Mortgage loan commitments
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Realized Investment Gains (Losses)	33,504	(30,655)
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	(178)	362
Fair Value, Measurements, Recurring \| Lennar Other \| Equity Securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Lennar Other realized and unrealized losses from technology investments	$ (62,503)	$ (5,137)

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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.

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Amount of realized gain (loss) on investment.

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Amount of unrealized gain (loss) on investment.

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