BUSINESS SEGMENT INFORMATION - Total Assets by Segment (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Assets	$ 33,381	$ 34,709
Identifiable intangible assets acquired	6,148	6,640
Operating segments | Integrated Mission Systems
Segment Reporting Information [Line Items]
Assets	11,357	11,830
Operating segments | Space & Airborne Systems
Segment Reporting Information [Line Items]
Assets	8,349	8,151
Operating segments | Communication Systems
Segment Reporting Information [Line Items]
Assets	5,844	6,035
Other non-reportable businesses
Segment Reporting Information [Line Items]
Assets	0	3
Corporate
Segment Reporting Information [Line Items]
Assets	7,831	8,690
Identifiable intangible assets acquired	$ 6,100	$ 6,600