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Operating and Reporting Segments - Unrealized Gain (Loss) on Investments (Details) - Lennar Other - USD ($) $ in Thousands | 12 Months Ended
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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 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 + Details
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