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Financial Derivatives and Hedging Activities - Narrative (Detail)
$ in Millions
9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
EUR (€)
Oct. 31, 2019
EUR (€)
Derivative [Line Items]        
Pre-tax gain from changes in currency exchange rates | $ $ (9.7) $ 13.8    
Term Loans        
Derivative [Line Items]        
Line of credit facility, maximum borrowing capacity     € 220,000,000  
Floating-to-fixed Interest Rate Swap Agreement        
Derivative [Line Items]        
Derivative notional amount       € 180,000,000
Derivative fixed interest rate       0.0395%
Loans variable rate of interest       € 180,000,000
Minimum        
Derivative [Line Items]        
Long-term debt percentage bearing fixed Interest rate       0.00%
Minimum | Fair Value, Measurements        
Derivative [Line Items]        
Accumulated other comprehensive income realization period 12 months      
Maximum | Fair Value, Measurements        
Derivative [Line Items]        
Accumulated other comprehensive income realization period 18 months      
Designated as Hedging | Cash Flow Hedges | Minimum        
Derivative [Line Items]        
Maturities of foreign currency derivative contracts 1 month      
Designated as Hedging | Cash Flow Hedges | Maximum        
Derivative [Line Items]        
Maturities of foreign currency derivative contracts 18 months      
Not Designated as Hedging        
Derivative [Line Items]        
Maturities of foreign currency derivative contracts 1 month