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, 2025	Jun. 30, 2024
Carrying Value
Carrying amounts and estimated fair values of financial instruments not recorded at fair value
Long-term debt	$ 695.4	$ 694.2
Company-owned life insurance	33.1	31.8
Fair Value
Carrying amounts and estimated fair values of financial instruments not recorded at fair value
Long-term debt	712.4	709.1
Company-owned life insurance	$ 33.1	$ 31.8

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

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