Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024
Current assets:
Allowance for credit losses	$ 2.2	$ 3.6
Inventory allowance	$ 7.7	$ 11.4
Stockholders' equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	42,197,964	42,197,964
Treasury stock, shares (in shares)	497,420	816,013