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Fair Value of Financial Instruments Additional Information (Details) - Forward contracts - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]          
Derivative, notional amount $ 298.8   $ 298.8   $ 251.6
Other accounts receivable          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Fair value foreign currency forward contracts, assets 0.4   0.4    
Accrued expenses          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Fair value foreign currency forward contracts, liabilities         $ 0.2
Other (expenses), net          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Recognized gains (losses) of foreign currency forward contracts $ 3.7 $ (10.7) 8.2 $ (4.9)  
Other, net          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Change in the fair value of foreign currency forward contracts     8.2 (4.9)  
Cash receipts     $ 7.7    
Cash settlements       $ (4.8)