CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021
Current assets:
Allowance for doubtful accounts	$ 5.4	$ 6.5
STOCKHOLDERS' EQUITY
Common stock, authorized shares (in shares)	100,000,000	100,000,000
Common stock, issued shares (in shares)	56,025,510	56,024,619
Common stock, outstanding shares (in shares)	48,286,439	48,040,676
Common stock in treasury, shares (in shares)	7,739,071	7,983,943