Financial Instruments and Fair Value Disclosure (Schedule Of Gains And Losses Of Financial Instruments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2020
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in other comprehensive income	$ 1,464	$ (536)	$ (851)
Lennar Other
Debt and Equity Securities, FV-NI [Line Items]
Lennar Other unrealized gain (loss) from technology investments	(655,094)	510,802
Fair Value, Measurements, Recurring | Loans held-for-sale | Financial Services
Debt and Equity Securities, FV-NI [Line Items]
Lennar Other unrealized gain (loss) from technology investments	(33,287)	(14,449)	21,765
Fair Value, Measurements, Recurring | Mortgage loan commitments | Financial Services
Debt and Equity Securities, FV-NI [Line Items]
Lennar Other unrealized gain (loss) from technology investments	43,695	(8,302)	12,774
Fair Value, Measurements, Recurring | Forward contracts | Financial Services
Debt and Equity Securities, FV-NI [Line Items]
Lennar Other unrealized gain (loss) from technology investments	(48,790)	11,513	(9,805)
Fair Value, Measurements, Recurring | Forward options | Financial Services
Debt and Equity Securities, FV-NI [Line Items]
Lennar Other unrealized gain (loss) from technology investments	(142)	0	0
Fair Value, Measurements, Recurring | Equity Securities | Lennar Other
Debt and Equity Securities, FV-NI [Line Items]
Lennar Other unrealized gain (loss) from technology investments	(655,094)	510,802	0
Fair Value, Measurements, Recurring | Lennar Other investments available-for-sale | Lennar Other
Debt and Equity Securities, FV-NI [Line Items]
Changes in fair value included in other comprehensive income	$ 1,464	$ (536)	$ (805)