Fair Value Measurements - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value in the Financial Statements (Details) - USD ($) $ in Millions	Jun. 30, 2024	Jun. 30, 2023
Carrying Value
Carrying amounts and estimated fair values of financial instruments not recorded at fair value
Long-term debt	$ 694.2	$ 693.0
Company-owned life insurance	31.8	26.2
Fair Value
Carrying amounts and estimated fair values of financial instruments not recorded at fair value
Long-term debt	709.1	698.1
Company-owned life insurance	$ 31.8	$ 26.2

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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