Restructuring, Asset Impairments and Other, Net (Rollforward of Accrued Restructuring Charges) (Details) $ in Millions	3 Months Ended
	Apr. 01, 2016 USD ($)
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period	$ 5.8
Charges	1.7
Usage	(3.0)
Balance at End of Period	4.5
Estimated employee separation charges
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period	5.3
Charges	1.5
Usage	(2.8)
Balance at End of Period	4.0
Estimated costs to exit
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period	0.5
Charges	0.2
Usage	(0.2)
Balance at End of Period	$ 0.5