Derivatives (Table 1 & 2) (Details) (USD $) In Thousands, unless otherwise specified	Oct. 29, 2011
Canadian Dollar [Member]
Outstanding foreign exchange forward contracts
Notional Amount of outstanding foreign exchange forward contracts	$ 14,853	[1]
Notional Amount of outstanding foreign exchange forward contracts to hedge foreign currency denominated net monetary assets/liabilities	0
British Pound [Member]
Outstanding foreign exchange forward contracts
Notional Amount of outstanding foreign exchange forward contracts	34,001	[1]
Notional Amount of outstanding foreign exchange forward contracts to hedge foreign currency denominated net monetary assets/liabilities	4,706
Euro [Member]
Outstanding foreign exchange forward contracts
Notional Amount of outstanding foreign exchange forward contracts	53,699	[1]
Notional Amount of outstanding foreign exchange forward contracts to hedge foreign currency denominated net monetary assets/liabilities	9,584
Japanese Yen [Member]
Outstanding foreign exchange forward contracts
Notional Amount of outstanding foreign exchange forward contracts	0	[1]
Notional Amount of outstanding foreign exchange forward contracts to hedge foreign currency denominated net monetary assets/liabilities	$ 16,921

[1] Amounts are reported in thousands and in U.S. Dollars equivalent as of October 29, 2011.