Operating And Reporting Segments (Narrative) (Details) $ in Thousands, shares in Millions	12 Months Ended
Nov. 30, 2021 USD ($) transaction shares	Nov. 30, 2020 USD ($) transaction
Segment Reporting Information [Line Items]
Investments in unconsolidated entities	$ 1,972,383	$ 2,064,921
Doma Holdings, Inc
Segment Reporting Information [Line Items]
Ownership percentage	25.00%
Investments in unconsolidated entities	$ 53,700
Financial Services
Segment Reporting Information [Line Items]
Origination of loans	770,107	703,777
Loans sold	$ 931,023	$ 705,089
Number of securitizations \| transaction	6	5
Investments held-to-maturity	$ 157,800	$ 164,200
Financial Services \| Commercial Mortgage-Backed Securities \| Minimum
Segment Reporting Information [Line Items]
Discount rate	6.00%
Coupon rate	2.00%
Financial Services \| Commercial Mortgage-Backed Securities \| Maximum
Segment Reporting Information [Line Items]
Discount rate	84.00%
Coupon rate	5.30%
Financial Services \| Warehouse Repurchase Facility
Segment Reporting Information [Line Items]
Percentage of loan collateralized	80.00%
Lennar Other
Segment Reporting Information [Line Items]
Investments in unconsolidated entities	$ 346,270	$ 387,097
Lennar Other \| Level 3 \| Terminal Value Multiple
Segment Reporting Information [Line Items]
Discontinued Operation, Equity Consideration, Measurement Input	3
Lennar Other \| Level 3 \| Discount rate
Segment Reporting Information [Line Items]
Discontinued Operation, Equity Consideration, Measurement Input	0.15
Lennar Other \| Disposal Group, Held-for-sale, Not Discontinued Operations \| Sunnova Energy International Inc.
Segment Reporting Information [Line Items]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	$ 153,000
Disposal Group, Including Discontinued Operation, Consideration, Equity Interest Received at Closing, Number of Shares \| shares	3.1

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