Fair Value Measurements - Schedule of carrying amounts and estimated fair values of financial instruments not recorded at fair value in the financial statements (Details) - Level 2 - USD ($) $ in Millions	Mar. 31, 2022	Jun. 30, 2021
Carrying Value
Carrying amounts and estimated fair values of financial instruments not recorded at fair value
Current and long-term debt	$ 990.9	$ 694.5
Company-owned life insurance	26.3	24.6
Fair Value
Carrying amounts and estimated fair values of financial instruments not recorded at fair value
Current and long-term debt	1,015.4	754.7
Company-owned life insurance	$ 26.3	$ 24.6