BUSINESS SEGMENT INFORMATION - Total Assets by Segment (Details) - USD ($) $ in Millions	Apr. 01, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Assets	$ 34,444	$ 34,709
Identifiable intangible assets acquired	6,486	6,640
Operating segments | Integrated Mission Systems
Segment Reporting Information [Line Items]
Assets	11,811	11,830
Operating segments | Space & Airborne Systems
Segment Reporting Information [Line Items]
Assets	8,573	8,151
Operating segments | Communication Systems
Segment Reporting Information [Line Items]
Assets	6,083	6,035
Other non-reportable businesses
Segment Reporting Information [Line Items]
Assets	0	3
Corporate eliminations
Segment Reporting Information [Line Items]
Assets	7,977	8,690
Identifiable intangible assets acquired	$ 6,500	$ 6,600