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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, 2024 | Aug. 31, 2023 | Aug. 31, 2024 | Aug. 31, 2023
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | $ 39,123 | $ (15,713) | $ 12,472 | $ (14,170)
Blend Labs |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | 2,270 | 386 | 5,921 | (360)
Hippo |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | 6,609 | (17,166) | 33,795 | (14,933)
Opendoor |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | (564) | 23,638 | (16,156) | 38,459
SmartRent |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | (5,634) | (1,707) | (12,206) | 8,219
Sonder |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | 71 | (91) | 82 | (549)
Sunnova |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Lennar Other unrealized gains (losses) from technology investments | $ 36,371 | $ (20,773) | $ 1,036 | $ (45,006)

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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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