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Derivatives and Hedging (Narratives) (Details)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Jun. 30, 2021
USD ($)
Sep. 30, 2020
Contract
Derivative [Line Items]            
Foreign currency transactions realized gains (losses) $ (0.1) $ (1.3) $ 0.3 $ (2.4)    
Interest Rate Swap            
Derivative [Line Items]            
Notional principal amount of forward foreign exchange contracts 200.0 200.0 $ 200.0 $ 200.0    
Maturity date     Apr. 30, 2023 Apr. 30, 2023    
Unrealized loss on interest rate cash flow hedges     $ (0.3) $ (1.7)    
Estimated interest expense over next twelve months     0.4      
Forward Foreign Currency Contracts            
Derivative [Line Items]            
Notional principal amount of forward foreign exchange contracts 5.7   5.7   $ 21.8  
Unrealized losses on forward foreign currency contracts     0.3   $ 0.2  
Forward Foreign Currency Contracts | Not Designated as Hedging Instrument            
Derivative [Line Items]            
Notional principal amount of forward foreign exchange contracts 20.4 22.7 $ 20.4 22.7    
Maximum maturities for contracts     40 days      
Net gains (losses) on forward foreign currency contracts (0.1) $ 0.4 $ (0.2) $ 0.5    
Forward Foreign Currency Contracts | Designated as Hedging Instrument            
Derivative [Line Items]            
Notional principal amount of forward foreign exchange contracts $ 5.7   $ 5.7      
Maximum maturities for contracts     12 months      
Number of derivative financial instruments | Contract           0
Unrealized losses on forward foreign currency contracts     $ 0.3