Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure
Effective income tax rate	24.90%	20.30%	7.10%
Undistributed earnings of foreign subsidiaries	$ 2.8	$ 1.7
Income (loss) from continuing operations before income taxes, foreign	$ 2.0	$ 1.1	$ (1.9)