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, 2024	May 31, 2023	May 31, 2024	May 31, 2023
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	$ 1,355	$ 573	$ 1,717	$ 1,424
Fair Value, Measurements, Recurring | Lennar 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	17,187	7,899	(28,865)	(23,563)
Fair Value, Measurements, Recurring | Lennar 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	(1,447)	13,783	(32,102)	(35,061)
Fair Value, Measurements, Recurring | Lennar 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	(28,973)	(18,807)	72,873	72,702
Fair Value, Measurements, Recurring | Lennar Financial Services | Forward options
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Lennar Other unrealized gains (losses) from technology investments	(710)	(100)	(1,054)	(952)
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	1,355	573	1,717	1,424
Fair Value, Measurements, Recurring | Lennar Other | Equity Securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Lennar Other unrealized gains (losses) from technology investments	$ (21,514)	$ 25,497	$ (26,651)	$ 1,543