Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Income tax provision	$ 13.5	$ 17.8	$ 25.7	$ 29.6
Earnings before income taxes	$ 62.5	$ 70.8	$ 115.5	$ 114.4
Effective tax rate	21.60%	25.30%	22.20%	25.90%