Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liabilities

The changes in the Company's aggregate product warranty liabilities, which are included in other current liabilities and other long term-liabilities on the Company's condensed consolidated balance sheets, were as follows (in millions):

	Three Months Ended
	March 25, 2012			March 31, 2013
Balance at beginning of the period	$	4.3		$	4.9
Costs accrued and revenues deferred	0.2			0.2
Warranty liabilities assumed from acquisitions	0.5			—
Settlements made (in cash or kind) and revenues recognized	(0.3		)	—
Balance at end of period	4.7			5.1
Less: Current portion	4.4			4.8
Non-current accrued product warranty and deferred warranty revenue	$	0.3		$	0.3