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Operating and Reporting Segments - Unrealized Gain (Loss) on Investments (Details) - Lennar Other - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2023	Nov. 30, 2022
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	$ (50,162)	$ (655,094)
Blend Labs (BLND)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	(130)	(25,630)
Hippo (HIPO)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	(19,210)	(222,447)
Opendoor (OPEN)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	21,762	(265,276)
SmartRent (SMRT)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	5,914	(78,177)
Sonder (SOND)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	(700)	(2,339)
Sunnova (NOVA)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	$ (57,798)	$ (61,225)

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- Definition

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- Definition

Amount of unrealized gain (loss) on investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

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