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Derivative Financial Instruments - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2024
Mar. 31, 2023
Derivative [Line Items]        
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments $ (1.1) $ (0.8) $ (0.1) $ (3.9)
Maximum | Forward contracts | Not Designated as Hedging Instrument        
Derivative [Line Items]        
Derivative, remaining maturity 3 months   3 months  
Maximum | Forward contracts | Designated as Hedging Instrument | Net Investment Hedging        
Derivative [Line Items]        
Derivative, remaining maturity 3 months   3 months