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INFORMATION ON BUSINESS SEGMENTS - Total Assets For Each Business Segment (Details) - USD ($)
$ in Millions
Sep. 24, 2017
Dec. 31, 2016
Segment Reporting Information [Line Items]    
Total assets $ 48,946 $ 47,806
Business segments    
Segment Reporting Information [Line Items]    
Total assets 36,353 35,513
Business segments | Aeronautics    
Segment Reporting Information [Line Items]    
Total assets 7,918 7,896
Business segments | Missiles and Fire Control    
Segment Reporting Information [Line Items]    
Total assets 4,510 4,000
Business segments | Rotary and Mission Systems    
Segment Reporting Information [Line Items]    
Total assets 18,500 18,367
Business segments | Space Systems    
Segment Reporting Information [Line Items]    
Total assets 5,425 5,250
Corporate    
Segment Reporting Information [Line Items]    
Total assets $ 12,593 $ 12,293