Operating and Reporting Segments (Financial Information Related to Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Segment Reporting Information [Line Items]
Earnings (loss) before income taxes	$ 1,824,274	$ 1,814,354	$ 4,255,843	$ 4,238,253
Operating Segments And Corporate
Segment Reporting Information [Line Items]
Earnings (loss) before income taxes	1,824,274	1,814,354	4,255,843	4,238,253
Operating Segments
Segment Reporting Information [Line Items]
Revenues	8,934,431	6,941,403	23,496,643	18,697,116
Operating earnings (loss)	1,957,079	1,924,495	4,636,603	4,576,449
Operating Segments | Homebuilding
Segment Reporting Information [Line Items]
Revenues	8,479,496	6,558,509	22,209,683	17,529,606
Operating earnings (loss)	1,963,224	1,329,833	4,953,485	3,275,488
Earnings (loss) before income taxes	1,963,224	1,329,833	4,953,485	3,275,488
Operating Segments | Financial Services
Segment Reporting Information [Line Items]
Revenues	202,078	206,973	578,945	669,789
Operating earnings (loss)	63,348	112,083	258,074	379,610
Earnings (loss) before income taxes	63,348	112,083	258,074	379,610
Operating Segments | Financial Services | Court Judgment
Segment Reporting Information [Line Items]
Loss contingency, provision charge	35,500		35,500
Operating Segments | Multifamily
Segment Reporting Information [Line Items]
Revenues	243,056	167,921	686,436	476,837
Operating earnings (loss)	48,487	(9,393)	54,582	12,130
Earnings (loss) before income taxes	48,487	(9,393)	54,582	12,130
Operating Segments | Lennar Other
Segment Reporting Information [Line Items]
Revenues	9,801	8,000	21,579	20,884
Operating earnings (loss)	(117,980)	491,972	(629,538)	909,221
Earnings (loss) before income taxes	(117,980)	491,972	(629,538)	909,221
Corporate and Unallocated
Segment Reporting Information [Line Items]
Corporate general and administrative expenses	115,557	94,942	334,425	296,190
Charitable foundation contribution	17,248	15,199	46,335	42,006
Earnings (loss) before income taxes	$ (132,805)	$ (110,141)	$ (380,760)	$ (338,196)