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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		9 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2025	Aug. 31, 2024
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	$ 0	$ 444	$ (1,510)	$ 2,161
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Forward contracts
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(36,411)	(30,043)	(7,919)	42,874
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Forward options
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Derivative, Gain (Loss) on Derivative, Net	68	2,687	271	1,633
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Interest Rate Swap
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(6,652)	(1,621)	(6,490)	(1,665)
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Loans held-for-sale
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Realized Investment Gains (Losses)	23,361	30,482	21,011	1,617
Fair Value, Measurements, Recurring \| Lennar Financial Services \| Mortgage loan commitments
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Realized Investment Gains (Losses)	34,590	22,400	45,511	(9,702)
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	0	444	(1,510)	2,161
Fair Value, Measurements, Recurring \| Lennar Other \| Equity Securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Lennar Other realized and unrealized gains from technology investments	$ 99,223	$ 39,123	$ 7,280	$ 12,472