Derivative Financial Instruments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 0.8	$ 0.4	$ 3.9	$ 4.0
Maximum | Forward Contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, remaining maturity			3 months
Maximum | Forward Contracts | Designated as Hedging Instrument | Net Investment Hedging
Derivative [Line Items]
Derivative, remaining maturity			3 months
Maximum | Foreign Exchange Options | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, remaining maturity			9 months