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Operating and Reporting Segments - Unrealized Gain (Loss) on Investments (Details) - Lennar Other - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2021	Aug. 31, 2020
Segment Reporting Information [Line Items]
Lennar Other realized and unrealized gain (loss)	$ 495,202	$ 0	$ 847,377	$ 0
Other realized gain	0	0	3,580	0
Disposal Group, Held-for-sale, Not Discontinued Operations | Sunnova Energy International Inc.
Segment Reporting Information [Line Items]
Gain on sale	1,531	0	153,006	0
Hippo
Segment Reporting Information [Line Items]
Lennar Other realized and unrealized gain (loss)	324,855	0	324,855	0
SmartRent
Segment Reporting Information [Line Items]
Lennar Other realized and unrealized gain (loss)	100,793	0	100,793	0
Opendoor
Segment Reporting Information [Line Items]
Lennar Other realized and unrealized gain (loss)	37,301	0	272,756	0
Sunnova Energy International Inc.
Segment Reporting Information [Line Items]
Lennar Other realized and unrealized gain (loss)	23,870	0	(14,465)	0
Blend Labs
Segment Reporting Information [Line Items]
Lennar Other realized and unrealized gain (loss)	$ 6,852	$ 0	$ 6,852	$ 0

X

- Definition

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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