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Operating and Reporting Segments - Unrealized Gain (Loss) on Investments (Details) - Lennar Other - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	$ 25,180	$ (50,162)
Blend Labs (BLND)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	9,474	(130)
Hippo (HIPO)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	73,243	(19,210)
Opendoor (OPEN)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	(12,587)	21,762
SmartRent (SMRT)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	(11,609)	5,914
Sonder (SOND)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	15	(700)
Sunnova (NOVA)
Segment Reporting Information [Line Items]
Lennar Other unrealized gains (losses) from technology investments	$ (33,356)	$ (57,798)

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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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