Geographic Information and Concentration of Risk (Net Sales Activity By Geographic Region) (Details) (Sales Revenue, Goods, Net [Member])	3 Months Ended		9 Months Ended
	Oct. 28, 2012	Oct. 30, 2011	Oct. 28, 2012	Oct. 30, 2011
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	20.00%	22.00%	20.00%	24.00%
Asia-Pacific [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	68.00%	63.00%	67.00%	62.00%
Europe [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	12.00%	15.00%	13.00%	14.00%