Restructuring and Other Charges - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 37.0	$ 14.0
Cost of net revenues
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 3.8	$ 0.7
Restructuring expenses, location	Cost of net revenues	Cost of net revenues
Restructuring and other charges
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 33.2	$ 13.3
Restructuring expenses, location	Restructuring and other charges	Restructuring and other charges