Mergers and Acquisitions (Details) (USD $) In Millions, unless otherwise specified			0 Months Ended		0 Months Ended			0 Months Ended
	Sep. 28, 2013	Jun. 29, 2013	Mar. 07, 2013 Arieso	Jun. 29, 2013 Arieso	Mar. 07, 2013 Arieso Developed technology	Mar. 07, 2013 Arieso Customer relationships	Mar. 07, 2013 Arieso Order backlog	Aug. 17, 2012 GenComm	Aug. 17, 2012 GenComm Developed technology	Aug. 17, 2012 GenComm Customer relationships	Aug. 17, 2012 GenComm Order backlog
Acquisitions
Purchase consideration paid in cash			$ 89.7					$ 15.2
Working capital adjustment and holdback payment			12.8					3.8
Minimum period after which the holdback payments will be released			1 year					1 year
Purchase price allocation to assets acquired
Net tangible assets acquired			0.2					5.9
Intangible assets acquired					32.8	14.5	1.4		3.2	0.2	0.2
Goodwill	118.1	115.1	40.8					5.7
Total purchase price			89.7					15.2
Fair value of acquired tangible assets
Cash			4.1
Accounts receivable			8.4
Property and equipment			0.6
Accounts payable			(0.3)
Accrued expenses, net of other assets			(1.4)
Employee related liabilities			(1.4)
Deferred revenue			(1.7)
Deferred tax liabilities, net			(8.1)
Net tangible assets acquired			0.2					5.9
Acquisition-related costs				$ 1.8
Additional business acquisition information
Estimated useful lives of intangible assets					5 years	5 years			4 years	4 years