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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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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
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-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
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-Section 45
-Paragraph 11
-Publisher FASB
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Amount of unrealized gain (loss) on investment.

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