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Financial Instruments and Fair Value Disclosure (Schedule Of Gains And Losses Of Financial Instruments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in other comprehensive income	$ (536)	$ (851)	$ 1,040
Lennar Other
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in revenue	680,576	0	0
Fair Value, Measurements, Recurring | Loans held-for-sale | Financial Services
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in revenue	(14,449)	21,765	4,891
Fair Value, Measurements, Recurring | Mortgage loan commitments | Financial Services
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in revenue	(8,302)	12,774	(85)
Fair Value, Measurements, Recurring | Forward contracts | Financial Services
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in revenue	11,513	(9,805)	6,504
Fair Value, Measurements, Recurring | Equity Securities | Lennar Other
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in revenue	510,802	0	0
Fair Value, Measurements, Recurring | Lennar Other investments available-for-sale | Financial Services
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in other comprehensive income	0	(46)	1,040
Fair Value, Measurements, Recurring | Lennar Other investments available-for-sale | Lennar Other
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in other comprehensive income	$ (536)	$ (805)	$ 0

X

- 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=121641772&loc=SL7669646-108580

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580

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Amount of unrealized gain (loss) on investment.

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-Publisher FASB
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-Topic 230
-SubTopic 10
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