Operating and Reporting Segments (Financial Information Related to Segments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
Segment Reporting Information [Line Items]
Earnings (loss) before income taxes	$ 784,453	$ 676,735
Operating Segments And Corporate
Segment Reporting Information [Line Items]
Earnings (loss) before income taxes	784,453	676,735
Operating Segments
Segment Reporting Information [Line Items]
Revenues	6,490,429	6,203,516
Operating earnings (loss)	924,218	802,934
Operating Segments | Homebuilding
Segment Reporting Information [Line Items]
Revenues	6,156,305	5,752,205
Operating earnings (loss)	906,839	1,109,850
Earnings (loss) before income taxes	906,839	1,109,850
Operating Segments | Financial Services
Segment Reporting Information [Line Items]
Revenues	182,981	176,701
Operating earnings (loss)	78,737	90,791
Earnings (loss) before income taxes	78,737	90,791
Operating Segments | Multifamily
Segment Reporting Information [Line Items]
Revenues	143,523	267,359
Operating earnings (loss)	(21,601)	5,427
Earnings (loss) before income taxes	(21,601)	5,427
Operating Segments | Lennar Other
Segment Reporting Information [Line Items]
Revenues	7,620	7,251
Operating earnings (loss)	(39,757)	(403,134)
Earnings (loss) before income taxes	(39,757)	(403,134)
Corporate and Unallocated
Segment Reporting Information [Line Items]
Corporate general and administrative expenses	126,106	113,661
Charitable foundation contribution	13,659	12,538
Earnings (loss) before income taxes	$ (139,765)	$ (126,199)