Financial Instruments and Risk Management (Schedule of Gains and Losses on Derivative Instruments) (Details) - USD ($) $ in Millions		3 Months Ended				9 Months Ended
		Jun. 30, 2023		Jun. 30, 2022		Jun. 30, 2023	Jun. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]						Nonoperating Income (Expense)	Nonoperating Income (Expense)
FX contract | Designated as hedge | Cash flow hedge
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI		$ 3.7	[1]	$ 7.8	[1]	$ (2.1)	$ 12.7
Gain (loss) reclassified from AOCI into income (effective portion)	[1],[2]					$ 1.0	$ 3.4
FX contract | Designated as hedge | Cash flow hedge | Other expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]
FX contract | Not designated as hedge | Other expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]

[1] Each of these derivative instruments had a high correlation to the underlying exposure being hedged for the periods indicated and have been deemed highly effective by the Company in offsetting associated risk.

[2] Gain was recorded in Other (income) expense, net.