SIGNIFICANT ACCOUNTING POLICIES - Average Warranty Periods by Segment (Details)	12 Months Ended
	Jun. 28, 2019
Minimum | Communication Systems
Warranty Period [Line Items]
Warranty Period	1 year
Minimum | Electronic Systems
Warranty Period [Line Items]
Warranty Period	1 year
Minimum | Space and Intelligence Systems
Warranty Period [Line Items]
Warranty Period	60 days
Maximum | Communication Systems
Warranty Period [Line Items]
Warranty Period	5 years
Maximum | Electronic Systems
Warranty Period [Line Items]
Warranty Period	2 years
Maximum | Space and Intelligence Systems
Warranty Period [Line Items]
Warranty Period	2 years