RESTRUCTURING AND OTHER EXIT COSTS (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 28, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 27		$ 16
Engineering, selling and administrative expenses | Business Exit | Commercial Line Business
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	18
Business charges in connection with transition and exit costs	45
Engineering, selling and administrative expenses | Exelis
Restructuring Cost and Reserve [Line Items]
Charges for integration and other costs	$ 5	$ 58