Derivative Instruments (Location and Amounts of Derivative Fair Values On The Condensed Consolidated Balance Sheets) (Details) (Not Designated as Hedging Instrument, USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Asset Derivative Notional Amount	$ 604,540	$ 786,188
Asset Derivative Fair Value	1,228	13,083
Liability Derivative Notional Amount	2,355	162,439
Liability Derivative Fair Value	22	5,390
Foreign exchange contracts | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivative Notional Amount	38,940	294,788
Asset Derivative Fair Value	814	6,254
Foreign exchange contracts | Accounts payable and accrued liabilities
Derivatives, Fair Value [Line Items]
Liability Derivative Notional Amount	2,355	122,439
Liability Derivative Fair Value	22	1,176
Interest rate swaps | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivative Notional Amount	565,600	491,400
Asset Derivative Fair Value	414	6,829
Interest rate swaps | Accounts payable and accrued liabilities
Derivatives, Fair Value [Line Items]
Liability Derivative Notional Amount	0	40,000
Liability Derivative Fair Value	$ 0	$ 4,214