Exit and Disposal Activities - Best Restructuring (Details) - Best Restructuring $ in Millions	3 Months Ended	9 Months Ended
	Sep. 26, 2015 USD ($)	Sep. 26, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 2.9
Expected cost	$ 21.0	21.0
Cost incurred to date	20.5	20.5
Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges		2.9
Special Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2.5
Cost incurred to date	20.1	20.1
Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0.0
Cost incurred to date	$ 0.4	$ 0.4