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Derivatives and Hedging (Narratives) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Derivative [Line Items]        
Foreign currency transactions realized gains (losses) $ (0.3) $ 0.3 $ 0.5 $ 0.6
Interest Rate Swap        
Derivative [Line Items]        
Notional principal amount of forward foreign exchange contracts 75.0 200.0 $ 75.0 $ 200.0
Maturity date     Apr. 30, 2023 Apr. 30, 2023
Unrealized gain (loss) on interest rate cash flow hedges     $ 0.1 $ 0.8
Estimated interest income over next twelve months     0.1  
Notional principal amount of forward foreign exchange contracts 75.0 200.0 75.0 200.0
Forward Foreign Currency Contracts | Not Designated as Hedging Instrument        
Derivative [Line Items]        
Notional principal amount of forward foreign exchange contracts 11.2 20.2 $ 11.2 20.2
Maximum maturities for contracts     60 days  
Net gains (losses) on forward foreign currency contracts 0.1 (0.1) $ (0.3) (0.4)
Notional principal amount of forward foreign exchange contracts 11.2 20.2 11.2 20.2
Forward Foreign Currency Contracts | Designated as Hedging Instrument        
Derivative [Line Items]        
Notional principal amount of forward foreign exchange contracts 5.4 0.2 5.4 0.2
Notional principal amount of forward foreign exchange contracts $ 5.4 $ 0.2 5.4 0.2
Forward Foreign Currency Contracts | Designated as Hedging Instrument | Maximum        
Derivative [Line Items]        
Unrealized gain (loss) on interest rate cash flow hedges     $ 0.1 $ 0.1