Derivative Instruments (Details 1) (Foreign Exchange Contract [Member], USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
|
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Revenue [Member]
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Summary of the effect of derivatives designated as hedging instruments on the consolidated statements of income | ||||
Amount Reclassified from Accumulated Other Comprehensive Income into Income Gain/(Loss) (Effective Portion) | $ (7.3) | $ 12.0 | $ (6.1) | $ 31.0 |
Other income (expense) [Member]
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Summary of the effect of derivatives designated as hedging instruments on the consolidated statements of income | ||||
Net gains (losses) in earnings of Foreign currency forward contracts due to hedge ineffectiveness | $ (0.1) | $ 0.8 | $ 0.2 | $ 4.0 |