Restructuring (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Total restructuring and related costs	$ 22.4	$ 6.6
Costs of products sold
Restructuring Cost and Reserve [Line Items]
Total restructuring and related costs	12.8	0.3
Selling, general and administrate expense
Restructuring Cost and Reserve [Line Items]
Total restructuring and related costs	5.7	6.3
Selling, general and administrate expense | IT enablement
Restructuring Cost and Reserve [Line Items]
Total restructuring and related costs	3.9	0.0
Project Momentum Restructuring
Restructuring Cost and Reserve [Line Items]
Total restructuring and related costs	18.5	6.6
Project Momentum Restructuring | Costs of products sold
Restructuring Cost and Reserve [Line Items]
Severance and related benefit costs	0.5	0.0
Accelerated depreciation & asset write-offs	1.3	0.0
Other restructuring related costs	11.0	0.3
Project Momentum Restructuring | Selling, general and administrate expense
Restructuring Cost and Reserve [Line Items]
Severance and related benefit costs	1.8	0.5
Accelerated depreciation & asset write-offs	0.5	0.0
Other restructuring related costs	$ 3.4	$ 5.8