Segment Information Net Sales Activity by Geographic Region (Details)	3 Months Ended		6 Months Ended
	Jul. 27, 2014	Jul. 28, 2013	Jul. 27, 2014	Jul. 28, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Sales Revenue, Goods, Net [Member] | Asia-Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	77.00%	72.00%	76.00%	73.00%
Sales Revenue, Goods, Net [Member] | North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	13.00%	17.00%	13.00%	16.00%
Sales Revenue, Goods, Net [Member] | Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	10.00%	11.00%	11.00%	11.00%