Financial Instruments and Risk Management (Schedule of Offsetting Assets and Liabilities) (Details) - FX contract - USD ($) $ in Millions		Sep. 30, 2023	Sep. 30, 2022
Derivative [Line Items]
Gross amount of recognized assets	[1]	$ 6.1	$ 13.4
Gross amount of recognized liabilities	[2]	(0.7)	(0.5)
Gross amounts offset in the balance sheet (assets)	[1]	(0.2)	0.0
Gross amounts offset in the balance sheet (liabilities)	[2]	0.4	0.4
Net amount of assets presented in the balance sheet	[1]	5.9	13.4
Net amount of liabilities presented in the balance sheet	[2]	$ (0.3)	$ (0.1)

[1] All derivative assets are presented in Other current assets or Other assets.

[2] All derivative liabilities are presented in Other current liabilities or Other liabilities.