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Lennar Financial Services Segment (Warehouse Repurchase Facilities) (Details) - Lennar Financial Services - Warehouse Repurchase Facility - USD ($)
12 Months Ended
Nov. 30, 2016
May 31, 2017
Feb. 28, 2017
Line of Credit Facility [Line Items]      
Maximum Aggregate Commitment $ 1,300,000,000    
364-day warehouse repurchase facility that matures December 2016      
Line of Credit Facility [Line Items]      
Maximum Aggregate Commitment $ 400,000,000    
Warehouse repurchase facility term 364 days    
Maximum Aggregate Commitment, uncommitted amount $ 250,000,000    
364-day warehouse repurchase facility that matures June 2017      
Line of Credit Facility [Line Items]      
Maximum Aggregate Commitment $ 600,000,000    
Warehouse repurchase facility term 364 days    
364-day warehouse repurchase facility that matures June 2017 | Forecast      
Line of Credit Facility [Line Items]      
Maximum Aggregate Commitment   $ 600,000,000 $ 400,000,000
364-day warehouse repurchase facility that matures September 2017      
Line of Credit Facility [Line Items]      
Maximum Aggregate Commitment $ 300,000,000    
Warehouse repurchase facility term 364 days