Commitments and Contingencies (Warranty) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at beginning of the period	$ 3.8	$ 1.1
Costs accrued and revenues deferred	1.8	1.6
Warranty liabilities assumed from acquisitions	0.4	2.5
Adjustments to preexisting warranties	(0.7)	(0.8)
Settlements made (in cash or kind) and revenues recognized	(0.1)	(0.6)
Balance at end of period	5.2	3.8
Less: Current portion	4.9	3.8
Non-current accrued product warranty and deferred warranty revenue	0.3	0
Balance at end of period	$ 5.2	$ 3.8
Minimum
Warranty Coverage Period [Line Items]
Warranty coverage period	1 year
Maximum
Warranty Coverage Period [Line Items]
Warranty coverage period	10 years
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