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Derivatives and Hedging (Narratives) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Derivative [Line Items] |  |  |  |
Foreign currency transactions realized gains (losses) | $ 0.1 | $ (0.1) | $ 0.8 | $ 0.3
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 |  |  | $ 0.8 | $ (0.3)
Estimated interest income over next twelve months |  |  | 0.8 |
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 | 11.1 | 20.4 | $ 11.1 | 20.4
Maximum maturities for contracts |  |  | 60 days |
Net gains (losses) on forward foreign currency contracts | 0.1 | (0.1) | $ (0.4) | (0.2)
Notional principal amount of forward foreign exchange contracts | 11.1 | 20.4 | 11.1 | 20.4
Forward Foreign Currency Contracts | Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Notional principal amount of forward foreign exchange contracts | 5.5 | 5.7 | 5.5 | 5.7
Unrealized gain (loss) on interest rate cash flow hedges |  |  | $ 0.4 | (0.3)
Maximum maturities for contracts |  |  | 12 months |
Notional principal amount of forward foreign exchange contracts | $ 5.5 | $ 5.7 | $ 5.5 | $ 5.7

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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