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Operating and Reporting Segments - Unrealized Gain (Loss) on Investments (Details) - Lennar Other - Operating Segments - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Aug. 31, 2023 | Aug. 31, 2022 | Aug. 31, 2023 | Aug. 31, 2022
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized losses from technology investments | $ (15,713) | $ (85,839) | $ (14,170) | $ (558,974)
Blend Labs |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized losses from technology investments | 386 | (518) | (360) | (21,510)
Hippo |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized losses from technology investments | (17,166) | (32,933) | (14,933) | (195,336)
Opendoor |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized losses from technology investments | 23,638 | (54,391) | 38,459 | (218,751)
SmartRent |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized losses from technology investments | (1,707) | (23,118) | 8,219 | (71,431)
Sonder |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized losses from technology investments | (91) | (168) | (549) | (2,300)
Sunnova |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized losses from technology investments | $ (20,773) | $ 25,289 | $ (45,006) | $ (49,646)

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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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