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Derivatives and Hedging (Narratives) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2021 | Mar. 31, 2020
Derivative [Line Items] |  |  |  |
Foreign currency transactions realized gain (loss) | $ 0.6 | $ 0.9 | $ (1.9) | $ (1.1)
Interest Rate Swap |  |  |  |
Derivative [Line Items] |  |  |  |
Notional principal amount of forward foreign currency 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 |  |  | $ 1.3 | $ 1.0
Estimated interest expense over next twelve months |  |  | 1.0 |
Forward Foreign Currency Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Notional principal amount of forward foreign currency contracts | 26.7 |  | 26.7 |
Foreign currency transactions realized gain (loss) | (0.1) | 0.1 | 0.4 | 0.1
Foreign currency transactions unrealized gain (loss) | $ (0.2) | $ 0.1 | $ 0.1 | $ 0.1
Forward Foreign Currency Contracts | Maximum |  |  |  |
Derivative [Line Items] |  |  |  |
Maximum maturities for contracts |  |  | 40 days |

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