Geographic Information and Concentration of Risk - Net Sales Activity By Geographic Region (Details) (Sales Revenue, Goods, Net [Member])	3 Months Ended		6 Months Ended
	Jul. 28, 2013	Jul. 29, 2012	Jul. 28, 2013	Jul. 29, 2012
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
North America [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	17.00%	18.00%	16.00%	19.00%
Asia-Pacific [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	72.00%	69.00%	73.00%	67.00%
Europe [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	11.00%	13.00%	11.00%	14.00%