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Operating and Reporting Segments - Unrealized Gain (Loss) on Investments (Details) - Lennar Other - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Segment Reporting Information [Line Items]
Lennar Other unrealized gain (loss) from technology investments	$ (395,170)	$ 469,745
Sonder (SOND) mark to market	(506)	0
Hippo
Segment Reporting Information [Line Items]
Lennar Other unrealized gain (loss) from technology investments	(124,457)	0
SmartRent
Segment Reporting Information [Line Items]
Lennar Other unrealized gain (loss) from technology investments	(44,363)	0
Opendoor
Segment Reporting Information [Line Items]
Lennar Other unrealized gain (loss) from technology investments	(143,361)	469,745
Sunnova Energy International Inc.
Segment Reporting Information [Line Items]
Lennar Other unrealized gain (loss) from technology investments	(75,041)	0
Blend Labs
Segment Reporting Information [Line Items]
Lennar Other unrealized gain (loss) from technology investments	$ (7,442)	$ 0

X

- Definition

Amount of realized gain (loss) on investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.3(a))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

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Amount of unrealized gain (loss) on investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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