Segment Data Segment Data (Schedule of Sales by Geographical Area) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue from External Customer [Line Items]
Net sales	$ 650.0	$ 623.8	$ 1,717.5	$ 1,634.8
United States
Revenue from External Customer [Line Items]
Net sales	391.6	392.8	1,031.3	997.2
International
Revenue from External Customer [Line Items]
Net sales	$ 258.4	$ 231.0	$ 686.2	$ 637.6