Reportable Segments, Geographic Information And Major Customers (Concentration Of Risk) (Details)	12 Months Ended
	Sep. 27, 2014 ARRIS Group, Inc. [Member] Rate	Sep. 27, 2014 General Electric Company [Member] Rate	Sep. 28, 2013 Juniper Networks [Member] Rate	Sep. 29, 2012 Juniper Networks [Member] Rate
Segment Reporting Information [Line Items]
Major Customers Revenues As Percentage of Net Revenues	13.00%	11.00%	13.00%	16.00%