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Financial Instruments and Fair Value Disclosures - (Schedule Of Gains And Losses Of Financial Instruments) (Details) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
May 31, 2022
May 31, 2021
May 31, 2022
May 31, 2021
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]        
Changes in fair value included in other comprehensive income (loss), net of tax $ 62 $ 316 $ 804 $ (626)
Fair Value, Measurements, Recurring | Financial Services | Loans held-for-sale        
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]        
Lennar Other unrealized gains (losses) from technology investments 350 4,669 (27,037) (30,352)
Fair Value, Measurements, Recurring | Financial Services | Mortgage loan commitments        
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]        
Lennar Other unrealized gains (losses) from technology investments 12,758 5,057 26,555 142
Fair Value, Measurements, Recurring | Financial Services | Forward contracts        
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]        
Lennar Other unrealized gains (losses) from technology investments (18,480) (23,953) (8,490) 10,285
Fair Value, Measurements, Recurring | Lennar Other        
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]        
Changes in fair value included in other comprehensive income (loss), net of tax 62 316 804 (626)
Fair Value, Measurements, Recurring | Lennar Other | Forward contracts        
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]        
Lennar Other unrealized gains (losses) from technology investments $ (77,965) $ (272,625) $ (473,135) $ 197,120