Goodwill and Other Intangible Assets - Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 28, 2014	Jun. 28, 2014
Property, Plant and Equipment [Line Items]
Goodwill impairment loss	$ (4.4)	$ (4.4)	[1]
AV [Member]
Property, Plant and Equipment [Line Items]
Non-cash impairment charges	76.0
Finite-lived intangible asset impairment loss	74.7
Property and equipment impairment loss	1.3
Goodwill impairment loss		(4.4)	[1],[2]
Customer relationships [Member] | AV [Member]
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset impairment loss	48.0
Trademarks [Member] | AV [Member]
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset impairment loss	19.6
Developed technology [Member] | AV [Member]
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset impairment loss	6.1
Other [Member] | AV [Member]
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset impairment loss	$ 1.0

[1] Acquisition adjustments recorded during the first half of 2014 for the RHC segment relate to the acquisition of Reznor. See Note B, “Acquisitions”.

[2] Represents the combined audio/video reporting units.