Operating and Reporting Segments (Financial Information Related to Segments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Segment Reporting Information [Line Items]
Revenues	$ 6,203,516	$ 5,325,468
Operating earnings (loss)	802,934	1,449,859
Corporate general and administrative expenses	113,661	110,531
Charitable foundation contribution	12,538	12,314
Earnings (loss) before income taxes	676,735	1,327,014
Homebuilding
Segment Reporting Information [Line Items]
Revenues	5,752,205	4,943,056
Operating earnings (loss)	1,109,850	833,180
Operating Segments | Homebuilding
Segment Reporting Information [Line Items]
Revenues	5,752,205	4,943,056
Operating earnings (loss)	1,109,850	833,180
Corporate general and administrative expenses	0	0
Charitable foundation contribution	0	0
Earnings (loss) before income taxes	1,109,850	833,180
Operating Segments | Financial Services
Segment Reporting Information [Line Items]
Revenues	176,701	244,069
Operating earnings (loss)	90,791	146,207
Corporate general and administrative expenses	0	0
Charitable foundation contribution	0	0
Earnings (loss) before income taxes	90,791	146,207
Operating Segments | Multifamily
Segment Reporting Information [Line Items]
Revenues	267,359	131,443
Operating earnings (loss)	5,427	(874)
Corporate general and administrative expenses	0	0
Charitable foundation contribution	0	0
Earnings (loss) before income taxes	5,427	(874)
Operating Segments | Multifamily | Land
Segment Reporting Information [Line Items]
Revenues	131,600
Operating Segments | Lennar Other
Segment Reporting Information [Line Items]
Revenues	7,251	6,900
Operating earnings (loss)	(403,134)	471,346
Corporate general and administrative expenses	0	0
Charitable foundation contribution	0	0
Earnings (loss) before income taxes	(403,134)	471,346
Corporate and Unallocated
Segment Reporting Information [Line Items]
Revenues	0	0
Operating earnings (loss)	0	0
Corporate general and administrative expenses	113,661	110,531
Charitable foundation contribution	12,538	12,314
Earnings (loss) before income taxes	$ (126,199)	$ (122,845)