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Derivatives and Hedging Activities - Narrative (Details)
$ in Millions
1 Months Ended 3 Months Ended
Sep. 30, 2017
USD ($)
Mar. 31, 2020
USD ($)
derivative
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
derivative
Jun. 30, 2015
EUR (€)
Mar. 31, 2015
USD ($)
4.50% Senior Notes due September 2023            
Derivative [Line Items]            
Debt interest rate   4.50%        
Foreign currency forward and option contracts            
Derivative [Line Items]            
Fair value of (liability) derivative       $ (1.2)    
Foreign currency forward and option contracts | Designated as hedging instruments            
Derivative [Line Items]            
Maximum original maturity of foreign currency forward contracts   12 months        
Net unrealized gain (loss) related to cash flow hedging activities   $ 5.0 $ (1.2)      
Net unrealized derivative gains included in AOCI to be reclassified into earnings in next twelve months   $ 3.7        
Foreign currency forward and option contracts | Derivatives not designated as hedging instruments            
Derivative [Line Items]            
Maximum original maturity of foreign currency forward contracts   12 months        
Interest rate swaps            
Derivative [Line Items]            
Number of derivative instruments outstanding | derivative   0   0    
EUR - Denominated debt | Net investment hedge | 4.50% Senior Notes due September 2023            
Derivative [Line Items]            
Debt instrument face amount | €         € 400,000,000.0  
Debt interest rate         4.50%  
EUR - Denominated debt | Designated as hedging instruments | Net investment hedge            
Derivative [Line Items]            
Fair value of (liability) derivative   $ 8.0        
Fair value of liability derivatives net after tax   $ 6.0        
Cross-currency swaps | Net investment hedge            
Derivative [Line Items]            
Notional amount of outstanding derivative           $ 425.0
Cross-currency swaps | Designated as hedging instruments | Net investment hedge            
Derivative [Line Items]            
Fair value of (liability) derivative $ (61.9)          
Semi-annual interest settlement resulted in AOCI (17.7)          
Semi-annual interest settlement resulted in AOCI after tax $ (44.2)