Acquisitions (Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Jun. 29, 2013	Dec. 31, 2012	Jun. 29, 2013 2GIG Technologies, Inc. [Member]
Business Acquisition [Line Items]
Current assets			$ 60.4	[1]
Property and equipment, net			2.6
Goodwill	374.1	307.6	65.1
Intangible assets			90.1
Other assets			0.1
Accounts payable and accrued expenses			(20.0)
Deferred income taxes			(33.7)
Estimated purchase price			164.6
Cash			3.4
Accounts receivable			42.6
Inventory			14.3
Other current assets			0.1
Inventory adjustments			$ 3.1

[1] Includes cash of approximately $3.4 million, accounts receivable of approximately $42.6 million, inventories of approximately $14.3 million, and other current assets of approximately $0.1 million. Inventories includes a fair value adjustment to the historical carrying value of approximately $3.1 million, which was fully amortized in the second quarter of 2013.