Financial Instruments and Fair Value Disclosures - (Schedule Of Gains And Losses Of Financial Instruments) (Details) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
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	$ 851	$ 742
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 loss from technology investments	(31,462)	(27,387)
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 loss from technology investments	(48,844)	13,797
Fair Value, Measurements, Recurring | Financial Services | Forward contracts
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Lennar Other unrealized loss from technology investments	91,509	9,900
Fair Value, Measurements, Recurring | Financial Services | Forward options
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Lennar Other unrealized loss from technology investments	(852)	0
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	851	742
Fair Value, Measurements, Recurring | Lennar Other | Equity Securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Lennar Other unrealized loss from technology investments	$ (23,954)	$ (395,170)