Goodwill (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 29, 2013		Dec. 31, 2012
Goodwill [Roll Forward]
Gross goodwill, beginning balance	$ 307.6
Impairment losses	0		0
Net goodwill	374.1		307.6
Purchase Accounting	66.5	[1]
Gross goodwill, ending balance	374.1
RESV [Member]
Goodwill [Roll Forward]
Gross goodwill, beginning balance	156.8
Impairment losses	0		0
Net goodwill	156.8		156.8
Purchase Accounting	0	[1]
Gross goodwill, ending balance	156.8
TECH [Member]
Goodwill [Roll Forward]
Gross goodwill, beginning balance	19.4
Impairment losses	0		0
Net goodwill	85.9		19.4
Purchase Accounting	66.5	[1]
Gross goodwill, ending balance	85.9
DMS [Member]
Goodwill [Roll Forward]
Gross goodwill, beginning balance	131.4
Impairment losses	0		0
Net goodwill	131.4		131.4
Purchase Accounting	0	[1]
Gross goodwill, ending balance	$ 131.4

[1] Acquisition adjustments recorded during the first half of 2013 for the TECH segment relate to the acquisition of Gefen Distribution and 2GIG. See Note B, “Acquisitions”.