Exit and Disposal Activities - CAS Segment Consolidation (Details) - CAS Segment Consolidation - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Sep. 26, 2015	Sep. 26, 2015	May. 04, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges	[1]		$ 3.7
Minimum
Restructuring Cost and Reserve [Line Items]
Expected cost		$ 12.0	12.0	$ 10.0
Maximum
Restructuring Cost and Reserve [Line Items]
Expected cost		17.0	17.0	$ 15.0
Employee Separation, Facility Abandonment, and Inventory Write-offs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 2.8	$ 7.6

[1] Excludes approximately $3.9 million of inventory charges recorded during the nine months of 2015.