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Derivatives and Hedging (Narratives) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Not Designated as Hedging Instrument        
Derivative [Line Items]        
Foreign currency transactions realized gain (loss) $ (1.3) $ (0.8) $ (2.4) $ (0.2)
Interest Rate Swap        
Derivative [Line Items]        
Notional principal amount of forward foreign currency contracts 200.0   $ 200.0  
Maturity date     Apr. 30, 2023  
Unrealized loss on interest rate cash flow hedges     $ 1.7  
Estimated interest expense over next twelve months     1.0  
Forward Foreign Currency Contracts        
Derivative [Line Items]        
Foreign currency transactions realized gain (loss) 0.3   0.4 $ 0.0
Foreign currency transactions unrealized gain (loss) 0.1   0.1  
Forward Foreign Currency Contracts | Not Designated as Hedging Instrument        
Derivative [Line Items]        
Notional principal amount of forward foreign currency contracts $ 22.7   $ 22.7  
Maximum maturities for contracts     40 days