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Derivative Financial Instruments Derivative Financial Instruments Narrative (Details) (USD $)
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9 Months Ended | 9 Months Ended | |||||||||||||
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Sep. 30, 2014
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Dec. 31, 2013
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Sep. 30, 2014
Forward Contracts [Member]
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Sep. 30, 2014
Secured Debt [Member]
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Dec. 31, 2013
Secured Debt [Member]
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Sep. 30, 2014
Interest Rate Swap [Member]
contracts
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Sep. 30, 2014
Foreign Exchange Contract [Member]
Not Designated as Hedging Instrument [Member]
Minimum [Member]
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Sep. 30, 2014
Foreign Exchange Contract [Member]
Not Designated as Hedging Instrument [Member]
Maximum [Member]
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Sep. 30, 2014
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]
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Dec. 31, 2013
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]
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Sep. 30, 2013
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]
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Dec. 31, 2012
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]
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Sep. 30, 2014
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]
Net Investment Hedging [Member]
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Sep. 30, 2013
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]
Net Investment Hedging [Member]
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Sep. 30, 2014
Number of Counterparties [Member]
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| Net unrealized loss on hedging instruments | $ 81,725,000 | $ 21,722,000 | $ 14,380,000 | $ 14,380,000 | $ 14,380,000 | $ 14,380,000 | $ 14,400,000 | $ 14,400,000 | |||||||
| Description of Derivative Activity Volume | a total of 390 contracts were entered into | Our derivative assets and liabilities consist of foreign exchange forward and interest rate swap contracts with eight counterparties at September 30, 2014 and seven counterparties at December 31, 2013 | |||||||||||||
| Number of Interest Rate Derivatives Held | 6 | ||||||||||||||
| Derivative, Notional Amount | 200,000,000 | 86,000 | 19,300,000 | ||||||||||||
| Pay fixed interest rate in interst rate swap | 1.00% | ||||||||||||||
| Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net | (1,500,000) | ||||||||||||||
| Long-term Debt | $ 310,000,000 | $ 378,750,000 | |||||||||||||