Business Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Jun. 29, 2012
Segment Reporting Information [Line Items]
Total assets	$ 5,354.3		$ 5,592.8
Revenue and income from continuing operations before income taxes by segment
Revenue from product sales and services	1,261.5	1,336.1
Unallocated corporate expense	(16.7)	(18.6)
Corporate eliminations, operating income	(1.9)	(1.5)
Non-operating income	0	0.7
Net interest expense	(27.4)	(27.2)
Income from continuing operations before income taxes	187.6	192.3
R F Communications [Member]
Segment Reporting Information [Line Items]
Total assets	1,250.7		1,344.8
Revenue and income from continuing operations before income taxes by segment
Revenue from product sales and services	444.7	497.1
Segment operating income	134.1	154.0
Integrated Network Solutions [Member]
Segment Reporting Information [Line Items]
Total assets	1,882.0		1,854.3
Revenue and income from continuing operations before income taxes by segment
Revenue from product sales and services	375.7	418.6
Segment operating income	32.4	21.8
Government Communications Systems [Member]
Segment Reporting Information [Line Items]
Total assets	1,015.5		1,001.4
Revenue and income from continuing operations before income taxes by segment
Revenue from product sales and services	465.5	443.7
Segment operating income	67.1	63.1
Corporate [Member]
Segment Reporting Information [Line Items]
Total assets	760.2		759.6
Revenue and income from continuing operations before income taxes by segment
Revenue from product sales and services	(24.4)	(23.3)
Segment, Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Total assets	$ 445.9		$ 632.7