Operating and Reporting Segments (Financial Information Related to Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2025	Aug. 31, 2024
Segment Reporting Information [Line Items]
Revenues	$ 8,810,278	$ 9,416,042	$ 24,819,325	$ 25,494,564
Operating Segments And Corporate
Segment Reporting Information [Line Items]
Operating earnings (loss)	790,703	1,535,133	2,130,822	3,726,976
Operating Segments
Segment Reporting Information [Line Items]
Revenues	8,810,278	9,416,042	24,819,325	25,494,564
Operating Segments | Homebuilding
Segment Reporting Information [Line Items]
Revenues	8,253,675	9,045,692	23,381,407	24,357,742
Operating earnings (loss)	759,785	1,477,918	2,297,292	3,846,869
Operating Segments | Lennar Financial Services
Segment Reporting Information [Line Items]
Revenues	314,195	273,270	889,370	804,713
Operating earnings (loss)	177,872	144,400	478,635	422,708
Operating Segments | Multifamily
Segment Reporting Information [Line Items]
Revenues	228,465	93,443	521,966	322,620
Operating earnings (loss)	(16,471)	78,908	(31,248)	42,795
Operating Segments | Lennar Other
Segment Reporting Information [Line Items]
Revenues	13,943	3,637	26,582	9,489
Operating earnings (loss)	62,498	20,095	(79,680)	(48,417)
Corporate and Unallocated
Segment Reporting Information [Line Items]
Operating earnings (loss)	$ (192,981)	$ (186,188)	$ (534,177)	$ (536,979)