Restructuring Charges - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 69.8	$ 0.0	$ 69.8	$ 0.0
Restructuring charges, net of tax	$ 52.2
Restructuring charges, per diluted share (in USD per share)	$ 0.46
Expected restructuring charges	$ 69.8		69.8
Restructuring expenses	16.7
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	23.2		23.2
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	46.6		$ 46.6
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges	64.7
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5.1