Inventories, Net Narrative (Details) (USD $) In Millions, unless otherwise specified			0 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 28, 2011 Parent Company
Business Acquisition [Line Items]
Obsolete and slow-moving inventories, net of reserves	$ 3.3	$ 2.5
Increase in carrying value of inventory			$ 13.0
Amortization period of step up basis in inventory			2 months