Operating and Reporting Segments (Financial Information Related to Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Segment Reporting Information [Line Items]
Corporate general and administrative expenses	$ 105,207	$ 90,717	$ 218,868	$ 201,248
Charitable foundation contribution	16,549	14,493	29,087	26,807
Earnings (loss) before income taxes	1,754,834	1,096,885	2,431,569	2,423,899
Operating Segments
Segment Reporting Information [Line Items]
Revenues	8,358,696	6,430,245	14,562,212	11,755,713
Operating earnings (loss)	1,876,590	1,202,095	2,679,524	2,651,954
Operating Segments | Homebuilding
Segment Reporting Information [Line Items]
Revenues	7,977,982	6,028,041	13,730,187	10,971,097
Operating earnings (loss)	1,880,411	1,112,475	2,990,261	1,945,655
Earnings (loss) before income taxes	1,880,411	1,112,475	2,990,261	1,945,655
Operating Segments | Financial Services
Segment Reporting Information [Line Items]
Revenues	200,166	218,747	376,867	462,816
Operating earnings (loss)	103,935	121,320	194,726	267,527
Earnings (loss) before income taxes	103,935	121,320	194,726	267,527
Operating Segments | Multifamily
Segment Reporting Information [Line Items]
Revenues	176,021	177,473	443,380	308,916
Operating earnings (loss)	668	22,397	6,095	21,523
Earnings (loss) before income taxes	668	22,397	6,095	21,523
Operating Segments | Multifamily | Land
Segment Reporting Information [Line Items]
Revenues			147,800
Operating Segments | Lennar Other
Segment Reporting Information [Line Items]
Revenues	4,527	5,984	11,778	12,884
Operating earnings (loss)	(108,424)	(54,097)	(511,558)	417,249
Earnings (loss) before income taxes	(108,424)	(54,097)	(511,558)	417,249
Corporate and Unallocated
Segment Reporting Information [Line Items]
Corporate general and administrative expenses	105,207	90,717	218,868	201,248
Charitable foundation contribution	16,549	14,493	29,087	26,807
Earnings (loss) before income taxes	$ (121,756)	$ (105,210)	$ (247,955)	$ (228,055)