Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 24, 2012
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at beginning of the period	$ 5.3	$ 4.3
Costs accrued and revenues deferred	(0.1)	0.6
Warranty liabilities assumed from acquisitions	(0.2)	0.5
Settlements made (in cash or kind) and revenues recognized	0	(0.8)
Balance at end of period	5.0	4.6
Less: Current portion	4.6	4.6
Noncurrent accrued product warranty and deferred warranty revenue	$ 0.4	$ 0
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