INFORMATION ON BUSINESS SEGMENTS - Total Assets For Each Business Segment (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total assets	$ 54,963	$ 52,456
Business Segments
Segment Reporting Information [Line Items]
Total assets	43,797	42,951
Business Segments | Aeronautics
Segment Reporting Information [Line Items]
Total assets	13,695	13,167
Business Segments | Missiles and Fire Control
Segment Reporting Information [Line Items]
Total assets	5,786	5,703
Business Segments | Rotary and Mission Systems
Segment Reporting Information [Line Items]
Total assets	17,454	17,521
Business Segments | Space
Segment Reporting Information [Line Items]
Total assets	6,862	6,560
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 11,166	$ 9,505