Basis of Presentation and Significant Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Trade Accounts Receivable and Accounts Receivable, Other
Allowance for Doubtful Accounts	$ 1.1	$ 1.1
Selling, general and administrative expenses or cost of goods sold
Property Plant and Equipment
Depreciation expense	$ 95.9	$ 93.2	$ 95.5