Business Segments (Details Textual) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Jul. 03, 2009	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Business Segments (Textuals)
Number of business segments		3
Revenue earned from any individual foreign country		not exceeded 4 percent of total revenue	not exceeded 4 percent of total revenue	not exceeded 4 percent of total revenue
US government customer sales as percentage of total revenue		71.60%	74.80%	74.00%
Depreciation and amortization for intangible assets, capitalized software and debt issuance costs		$ 76.6	$ 55.7	$ 57.3
Export Revenue		869.5	424.6	766.0
Total impairment charges	255.5			255.5
United Kingdom [Member]
Entity-Wide Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries [Line Items]
Long-lived assets from international operations		41.9
Canada [Member]
Entity-Wide Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries [Line Items]
Long-lived assets from international operations		21.7
RF Communication [Member]
Business Segments (Textuals)
Revenue from services (In Percentage)		6.10%
Charge for integration and other acquisition-related costs			19.3	9.5
Charges due to cost reduction actions across business segments and at corporate headquarters				8.1
Government Communications Systems [Member]
Business Segments (Textuals)
Revenue from services (In Percentage)		20.30%
Charge for integration and other acquisition-related costs			2.4
Charge for schedule and cost overruns on commercial satellite reflector programs				18.0
Charge for schedule and cost overruns on commercial satellite reflector programs, net of tax				11.3
Charge for schedule and cost overruns on commercial satellite reflector programs, per diluted share				$ 0.09
Charges due to cost reduction actions across business segments and at corporate headquarters				13.1
Integrated Network Solutions [Member]
Business Segments (Textuals)
Revenue from services (In Percentage)		64.80%
Charge for integration and other acquisition-related costs		46.6	4.4
Charge for cost reduction actions			9.5
Charges due to cost reduction actions across business segments and at corporate headquarters				5.0
Corporate [Member]
Business Segments (Textuals)
Charges due to cost reduction actions across business segments and at corporate headquarters				$ 2.4