Derivative Financial Instruments (Details 6) (Derivatives not designated as either fair value hedges or cash flow hedges, USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2014
|
Mar. 31, 2013
|
|
Derivative Financial Instruments | ||
Amount of Gain (Loss) Recognized in Income on Derivatives | $ 15,486 | $ 345 |
Product contracts | Cost of sales
|
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Derivative Financial Instruments | ||
Amount of Gain (Loss) Recognized in Income on Derivatives | 15,543 | 666 |
Foreign currency derivatives | Cost of sales
|
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Derivative Financial Instruments | ||
Amount of Gain (Loss) Recognized in Income on Derivatives | $ (57) | $ (321) |