Acquisitions (Intangible Assets) (Details) (2GIG Technologies, Inc. [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 29, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 90.1
Weighted Average Useful Lives	9 years 9 months 18 days
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	77.8
Weighted Average Useful Lives	10 years 1 month 6 days
Completed Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	7.0
Weighted Average Useful Lives	7 years
Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 5.3
Weighted Average Useful Lives	10 years