Financial Instruments and Fair Value Disclosures - (Carrying Amounts And Estimated Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	May 31, 2026	Nov. 30, 2025
Lennar Financial Services | Level 3 | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	$ 13,830	$ 15,547
Investments held-to-maturity	129,320	132,868
Lennar Financial Services | Level 3 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	13,959	15,547
Investments held-to-maturity	127,778	132,032
Lennar Financial Services | Level 2 | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and other debts payable	1,963,746	1,790,309
Lennar Financial Services | Level 2 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and other debts payable	1,964,163	1,790,789
Homebuilding | Level 2 | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and other debts payable	4,047,487	4,084,686
Homebuilding | Level 2 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and other debts payable	$ 4,072,154	$ 4,122,169