Summary of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Nov. 30, 2022 USD ($) vote communities $ / shares shares	Nov. 30, 2021 USD ($) communities $ / shares shares	Nov. 30, 2020 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) shares	Oct. 31, 2021 USD ($) shares
Segment Reporting Information [Line Items]
Advertising costs	$ 102,100,000	$ 74,200,000	$ 72,600,000
Cash held in escrow	$ 1,000,000,000	$ 940,400,000
Escrow deposit period	2 days	2 days
Number of active communities | communities	1,200	1,259
Land under Purchase Options, Deposit	$ 2,000,000,000
Held-to-maturity securities, term	3 years
Deferred tax assets after valuation allowance	$ 720,063,000	$ 665,258,000
Net deferred tax liabilities		(4,245,000)
Deferred tax assets, valuation allowance	2,903,000	2,693,000
Self-insurance reserve	210,100,000	169,100,000
Authorized amount under stock repurchase program				$ 2,000,000,000	$ 1,000,000,000
Originally authorized shares under the stock repurchase program (in shares) | shares				30,000,000	25,000,000
Compensation expense	37,500,000	29,400,000	$ 27,300,000
Right-of-use assets	149,966,000
Operating lease liability	158,832,000
Net deferred tax assets	242,408,000
Variable Interest Entity, Not Primary Beneficiary Including Third Parties
Segment Reporting Information [Line Items]
Increase in consolidated inventory not owned	1,200,000,000
Operating Segments
Segment Reporting Information [Line Items]
Available-for-sale securities	35,482,000	41,654,000
Held-to-maturity securities	143,251,000	157,808,000
Investments in equity securities	$ 391,026,000	$ 1,006,599,000
Executive Chairman
Segment Reporting Information [Line Items]
Voting power	36.00%
Preferred Stock
Segment Reporting Information [Line Items]
Preferred stock, shares authorized (in shares) | shares	500,000
Preferred stock, par value (in usd per share) | $ / shares	$ 10
Participating Preferred Stock
Segment Reporting Information [Line Items]
Preferred stock, shares authorized (in shares) | shares	100,000,000
Preferred stock, par value (in usd per share) | $ / shares	$ 0.10
Preferred stock, shares issued (in shares) | shares	0
Class A Common Stock
Segment Reporting Information [Line Items]
Cash dividends (in USD per share) | $ / shares	$ 1.50	$ 1.00	$ 0.625
Votes per share | vote	1
Stock repurchased (in shares) | shares	9,600,000
Class A Common Stock | Common Stock
Segment Reporting Information [Line Items]
Treasury stock retired (in shares) | shares	46,700,000
Class B Common Stock
Segment Reporting Information [Line Items]
Cash dividends (in USD per share) | $ / shares	$ 1.50	$ 1.00	$ 0.625
Votes per share | vote	10
Stock repurchased (in shares) | shares	1,300,000
Class B Common Stock | Common Stock
Segment Reporting Information [Line Items]
Treasury stock retired (in shares) | shares	2,800,000
Financial Services
Segment Reporting Information [Line Items]
Net deferred tax liabilities		$ (1,431,000)
Net deferred tax assets	$ 15,376,000
Financial Services | Operating Segments
Segment Reporting Information [Line Items]
Available-for-sale securities	0	0
Held-to-maturity securities	143,251,000	157,808,000
Investments in equity securities		0
Lennar Other
Segment Reporting Information [Line Items]
Available-for-sale securities	35,500,000	41,700,000
Net deferred tax liabilities		(151,259,000)
Net deferred tax assets	46,214,000
Lennar Other | Operating Segments
Segment Reporting Information [Line Items]
Available-for-sale securities	35,482,000	41,654,000
Held-to-maturity securities	0	0
Investments in equity securities	391,026,000	1,006,599,000
Homebuilding
Segment Reporting Information [Line Items]
Sales incentive, amount per home	$ 17,300	$ 9,000	$ 19,800
Sales incentive, amount per home, percentage	3.50%	2.10%	4.80%
Inventory write-down	$ 47,900,000
Interest incurred	230,800,000	$ 275,100,000	$ 353,400,000
Interest capitalized	211,700,000	254,900,000	$ 331,000,000
Net deferred tax assets	154,143,000	84,198,000
Homebuilding | Operating Segments
Segment Reporting Information [Line Items]
Available-for-sale securities	0	0
Held-to-maturity securities	0	0
Investments in equity securities		$ 0
Stock Option Awards
Segment Reporting Information [Line Items]
Expiration period	10 years
Nonvested shares
Segment Reporting Information [Line Items]
Unrecognized compensation expense related to unvested share-based awards granted	$ 177,000,000
Weighted average remaining contractual life of unrecognized compensation expense related to unvested share-based awards	1 year 10 months 24 days
Nonvested shares vested (in shares) | shares	1,581,744	1,800,000	1,400,000
Discount rate | Minimum
Segment Reporting Information [Line Items]
Communities, unobservable inputs	0.10
Discount rate | Maximum
Segment Reporting Information [Line Items]
Communities, unobservable inputs	0.20
Operating properties
Segment Reporting Information [Line Items]
Estimated useful life	30 years
Furniture, fixtures and equipment | Minimum
Segment Reporting Information [Line Items]
Estimated useful life	2 years
Furniture, fixtures and equipment | Maximum
Segment Reporting Information [Line Items]
Estimated useful life	10 years
Leasehold improvements
Segment Reporting Information [Line Items]
Estimated useful life	5 years