Derivative Financial Instruments Derivative Financial Instruments Narrative (Details) (USD $)	12 Months Ended			3 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2011	Sep. 30, 2011 Euro Term Loan Interest Rate Swap [Member]	Jun. 30, 2011	Jun. 30, 2011	Dec. 31, 2013 Forward Contracts [Member]	Dec. 31, 2013 Number of Counterparties [Member]	Dec. 31, 2013 Interest Rate Swap [Member] contracts	Dec. 31, 2013 Foreign Exchange Contract [Member] Not Designated as Hedging Instrument [Member] Minimum [Member]	Dec. 31, 2013 Foreign Exchange Contract [Member] Not Designated as Hedging Instrument [Member] Maximum [Member]	Dec. 31, 2013 Secured Debt [Member]	Dec. 31, 2012 Secured Debt [Member]	Dec. 31, 2013 Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]	Dec. 31, 2012 Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]	Dec. 31, 2011 Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]	Dec. 31, 2010 Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]	Dec. 31, 2013 Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member] Net Investment Hedging [Member]
Net unrealized loss on hedging instruments	$ (21,722,000)	$ (34,384,000)												$ (14,380,000)	$ (14,380,000)	$ (14,380,000)	$ (5,514,000)	$ (14,400,000)
Derivative, Number of Instruments Held									6
Pay fixed interest rate in interst rate swap				6.59%	2.11%	2.15%			1.00%
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net									1,500,000
Long-term Debt	378,750,000											378,750,000	417,500,000
Percentage rate above EURIBOR receive on interest rate swap			2.00%	2.00%
Derivative, Description of Variable Rate Basis	Interbank Offered Rate (EURIBOR), plus 2%.
Cash Payment to Terminate Interest Rate Swap				2,900,000
Derivative, Notional Amount					$ 100,000,000	$ 100,000,000			$ 200,000,000	$ 251,000	$ 12,000,000
Number of USD Term Loan Interest Rate Derivatives Expired	2
Number of foreign exchange forward contracts entered into YTD							528	Our derivative assets and liabilities consist of foreign exchange forward and interest rate swap contracts with seven counterparties at December 31, 2013 and eight counterparties at December 31, 2012.