INFORMATION ON BUSINESS SEGMENTS - Total Assets For Each Business Segment (Details) - USD ($) $ in Millions	Jun. 24, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total assets	$ 45,125	$ 46,620
Business segments
Segment Reporting Information [Line Items]
Total assets	37,092	35,822
Business segments | Aeronautics
Segment Reporting Information [Line Items]
Total assets	8,283	7,713
Business segments | Missiles and Fire Control
Segment Reporting Information [Line Items]
Total assets	4,812	4,577
Business segments | Rotary and Mission Systems
Segment Reporting Information [Line Items]
Total assets	18,495	18,292
Business segments | Space
Segment Reporting Information [Line Items]
Total assets	5,502	5,240
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 8,033	$ 10,798