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Derivative Instruments and Hedges (Textual) (Details)
€ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Mar. 31, 2015
EUR (€)
2022 EUR Senior Notes      
Derivative [Line Items]      
Designated amount, net investment hedge     € 255.7
Debt Instrument, face amount     € 500.0
Not Designated as Hedging Instrument | Forward Exchange Contract      
Derivative [Line Items]      
Derivative, notional amount | $ $ 288,100,000.0 $ 280,900,000.0  
Minimum remaining maturity of foreign currency derivatives 4 days    
Maximum remaining maturity of foreign currency derivatives 18 months