SIGNIFICANT ACCOUNTING POLICIES - Average Warranty Period by Segment (Details)	12 Months Ended
	Dec. 31, 2021
Integrated Mission Systems | Minimum
Warranty Period [Line Items]
Average Warranty Period	1 year
Integrated Mission Systems | Maximum
Warranty Period [Line Items]
Average Warranty Period	3 years
Space & Airborne Systems | Minimum
Warranty Period [Line Items]
Average Warranty Period	1 year
Space & Airborne Systems | Maximum
Warranty Period [Line Items]
Average Warranty Period	3 years
Communication Systems | Minimum
Warranty Period [Line Items]
Average Warranty Period	1 year
Communication Systems | Maximum
Warranty Period [Line Items]
Average Warranty Period	5 years
Aviation Systems | Minimum
Warranty Period [Line Items]
Average Warranty Period	1 year
Aviation Systems | Maximum
Warranty Period [Line Items]
Average Warranty Period	2 years