Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at beginning of the period	$ 5.4	$ 5.2
Costs accrued and revenues deferred	0.6	0.3
Settlements made (in cash or kind) and revenues recognized and other	(0.5)	(0.6)
Balance at end of period	5.5	4.9
Less: Current portion	(5.1)	(4.6)
Non-current accrued product warranty and deferred warranty revenue	$ 0.4	$ 0.3
Product Warranties | Minimum
Warranty Coverage Period [Line Items]
Warranty coverage period	1 year
Product Warranties | Maximum
Warranty Coverage Period [Line Items]
Warranty coverage period	10 years