Business Segments (Details 1) - USD ($) $ in Millions	12 Months Ended
	Jul. 03, 2015	Jun. 27, 2014	Jun. 28, 2013
Revenue and income from continuing operations before income taxes by segment
Revenue	$ 5,083.0	$ 5,012.0	$ 5,112.0
Unallocated corporate expense	(199.0)	(60.0)	(88.0)
Corporate eliminations, operating income	(8.0)	(13.0)	(8.0)
Nonoperating income (loss)	(108.0)	4.0	(41.0)
Net interest expense	(128.0)	(91.0)	(107.0)
Income from continuing operations before income taxes	477.0	795.0	665.0
R F Communications [Member]
Revenue and income from continuing operations before income taxes by segment
Revenue	1,775.0	1,828.0	1,849.0
Segment operating income (loss)	549.0	562.0	577.0
Government Communications Systems [Member]
Revenue and income from continuing operations before income taxes by segment
Revenue	1,855.0	1,801.0	1,784.0
Segment operating income (loss)	292.0	277.0	252.0
Integrated Network Solutions [Member]
Revenue and income from continuing operations before income taxes by segment
Revenue	1,253.0	1,463.0	1,576.0
Segment operating income (loss)	42.0	116.0	80.0
Exelis [Member]
Revenue and income from continuing operations before income taxes by segment
Revenue	279.0	0.0	0.0
Segment operating income (loss)	37.0	0.0	0.0
Corporate [Member]
Revenue and income from continuing operations before income taxes by segment
Revenue	$ (79.0)	$ (80.0)	$ (97.0)