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Operating and Reporting Segments (Financial Information Related to Segments) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Aug. 31, 2023
Aug. 31, 2022
Aug. 31, 2023
Aug. 31, 2022
Segment Reporting Information [Line Items]        
Revenues $ 8,729,603 $ 8,934,431 $ 23,265,183 $ 23,496,643
Operating Segments And Corporate        
Segment Reporting Information [Line Items]        
Operating earnings (loss) 1,475,161 1,824,274 3,418,235 4,255,843
Operating Segments        
Segment Reporting Information [Line Items]        
Revenues 8,729,603 8,934,431 23,265,183 23,496,643
Operating Segments | Homebuilding        
Segment Reporting Information [Line Items]        
Revenues 8,318,615 8,479,496 22,144,937 22,209,683
Operating earnings (loss) 1,493,820 1,963,224 3,615,068 4,953,485
Operating Segments | Lennar Financial Services        
Segment Reporting Information [Line Items]        
Revenues 266,206 202,078 672,166 578,945
Operating earnings (loss) 148,995 63,348 340,331 258,074
Operating Segments | Lennar Financial Services | Court Judgment        
Segment Reporting Information [Line Items]        
Loss contingency, provision charge       35,500
Operating Segments | Lennar Multifamily [Member]        
Segment Reporting Information [Line Items]        
Revenues 137,394 243,056 432,661 686,436
Operating earnings (loss) (8,733) 48,487 (38,496) 54,582
Operating Segments | Lennar Other        
Segment Reporting Information [Line Items]        
Revenues 7,388 9,801 15,419 21,579
Operating earnings (loss) (26,218) (117,980) (84,374) (629,538)
Corporate and Unallocated        
Segment Reporting Information [Line Items]        
Operating earnings (loss) $ (132,703) $ (132,805) $ (414,294) $ (380,760)