Derivatives (Table 1 & 2) (Details) (USD $) In Thousands, unless otherwise specified	Oct. 27, 2012
Euro [Member]
Outstanding foreign exchange forward contracts
Notional Amount of outstanding foreign exchange forward contracts	$ 218,263	[1]
Notional Amount of outstanding foreign exchange forward contracts not designated as hedge	27,521	[1]
British Pound [Member]
Outstanding foreign exchange forward contracts
Notional Amount of outstanding foreign exchange forward contracts	142,873	[1]
Notional Amount of outstanding foreign exchange forward contracts not designated as hedge	25,829	[1]
Swiss Franc [Member]
Outstanding foreign exchange forward contracts
Notional Amount of outstanding foreign exchange forward contracts not designated as hedge	21,676	[1]
Canadian Dollar [Member]
Outstanding foreign exchange forward contracts
Notional Amount of outstanding foreign exchange forward contracts	16,343	[1]
Notional Amount of outstanding foreign exchange forward contracts not designated as hedge	4,064	[1]
Japanese Yen [Member]
Outstanding foreign exchange forward contracts
Notional Amount of outstanding foreign exchange forward contracts not designated as hedge	$ 3,175	[1]

[1] Amounts are reported in thousands and in U.S. Dollar equivalent as of October 27, 2012.