Derivative Instruments And Hedging Activities (Schedule Of Derivative Instrument Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Notional Value, Designated	$ 381,885	$ 412,465
Asset Fair Value, Designated	317	16,443
Liability Fair Value, Designated	7,906	5,137
Notional Value, Not Designated	16,237	0
Asset Fair Value, Not Designated	0	0
Liability Fair Value, Not Designated	14	0
Foreign Currency Contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Value, Designated	345,021	306,450
Asset Fair Value, Designated	169	16,443
Liability Fair Value, Designated	6,850	1,852
Commodities Contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Value, Designated	1,064	3,915
Asset Fair Value, Designated	148	0
Liability Fair Value, Designated	683	265
Notional Value, Not Designated	16,237	0
Asset Fair Value, Not Designated	0	0
Liability Fair Value, Not Designated	14	0
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Notional Value, Designated	35,800	102,100
Asset Fair Value, Designated	0	0
Liability Fair Value, Designated	$ 373	$ 3,020