Derivative Instruments And Hedging Activities (Schedule Of Total Gross Notional Amounts, Presented By Currency) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 27, 2013	Oct. 27, 2012
Derivatives Designated As Hedging Instruments
Derivative
Total gross notional amounts, presented by currency	$ 77,646	$ 105,171
Derivatives Designated As Hedging Instruments | Euro
Derivative
Total gross notional amounts, presented by currency	26,487	43,357
Derivatives Designated As Hedging Instruments | British pound
Derivative
Total gross notional amounts, presented by currency	10,026	20,499
Derivatives Designated As Hedging Instruments | Indian rupee
Derivative
Total gross notional amounts, presented by currency	21,092	16,046
Derivatives Designated As Hedging Instruments | Singapore dollar
Derivative
Total gross notional amounts, presented by currency	5,797	12,918
Derivatives Designated As Hedging Instruments | Japanese yen
Derivative
Total gross notional amounts, presented by currency	9,961	3,776
Derivatives Designated As Hedging Instruments | Swiss franc
Derivative
Total gross notional amounts, presented by currency	4,283	8,575
Derivatives Not Designated As Hedging Instruments
Derivative
Total gross notional amounts, presented by currency	4,191	12,068
Derivatives Not Designated As Hedging Instruments | Euro
Derivative
Total gross notional amounts, presented by currency	0	0
Derivatives Not Designated As Hedging Instruments | British pound
Derivative
Total gross notional amounts, presented by currency	0	0
Derivatives Not Designated As Hedging Instruments | Indian rupee
Derivative
Total gross notional amounts, presented by currency	0	0
Derivatives Not Designated As Hedging Instruments | Singapore dollar
Derivative
Total gross notional amounts, presented by currency	0	0
Derivatives Not Designated As Hedging Instruments | Japanese yen
Derivative
Total gross notional amounts, presented by currency	4,191	12,068
Derivatives Not Designated As Hedging Instruments | Swiss franc
Derivative
Total gross notional amounts, presented by currency	$ 0	$ 0