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Derivative Instruments and Hedging Activities (Textuals) (Details)
€ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2015
EUR (€)
Derivative
Dec. 31, 2015
USD ($)
Derivative
Mar. 31, 2006
USD ($)
Derivative Instruments and Hedging Activities (Textuals)            
Fair value of investment hedge contracts   $ 1.2     $ 1.0  
Derivatives used in net investment hedge, increase (decrease), gross of tax $ 10.4 0.8        
Maximum remaining maturity of foreign currency derivatives 24 months          
Fair value of non-designated foreign exchange forward contracts   0.8     $ 0.9  
Number of interest rate swap contracts       1 1  
Notional amount of pay-fixed receive-variable interest rate swaps           $ 200.0
Fair value of interest rate contracts   (1.2)     $ 0.1  
Gain on interest rate cash flow hedges, pretax $ 1.1 1.1        
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net 13.5 14.8 $ 4.5      
Interest Rate Swap            
Derivative [Line Items]            
Number of foreign currency option contracts | Derivative       2 2  
Derivative Instruments and Hedging Activities (Textuals)            
Notional amount of pay-fixed receive-variable interest rate swaps   0.0     $ 25.0  
Foreign Exchange Contract [Member]            
Derivative [Line Items]            
Number of foreign currency option contracts       2 2  
Derivative Instruments and Hedging Activities (Textuals)            
Notional amount of pay-fixed receive-variable interest rate swaps       € 1,416.0 $ 1,547.1  
Derivative, Average Foreign Currency Option Strike Price       1.09 1.09  
Miscellaneous, net | Foreign Exchange Contract [Member]            
Derivative Instruments and Hedging Activities (Textuals)            
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net $ 7.0 $ 0.0 $ 0.0