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Operating and Reporting Segments (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Aug. 31, 2022
Aug. 31, 2021
Nov. 30, 2021
Doma Holdings, Inc          
Segment Reporting Information [Line Items]          
Unconsolidated entities ownership percentage 25.00%   25.00%    
Lennar's carrying value of investments $ 17,100,000   $ 17,100,000    
Financial Services | Loss origination liability          
Segment Reporting Information [Line Items]          
Loan origination liabilities $ 12,100,000   $ 12,100,000   $ 11,700,000
Financial Services | Warehouse Repurchase Facility          
Segment Reporting Information [Line Items]          
Collateral percentage 80.00%   80.00%    
CMBS | Financial Services          
Segment Reporting Information [Line Items]          
Impairment charges for CMBS securities $ 0 $ 0 $ 0 $ 0