Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Income tax expense	$ 5.4	$ 13.0
Effective Income Tax Rate Reconciliation, Percent	24.70%	25.40%
Deferred Tax Liabilities, Gross	$ 65.8		$ 66.7
Deferred Tax Assets, Valuation Allowance	0.8		0.8
Deferred tax liability, net	$ 66.6		$ 67.5