Business and Asset Actions - Global Cost Reduction Plan (Details) - Global Cost Reduction Plan $ in Millions	3 Months Ended		31 Months Ended
	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2025 USD ($) position
Restructuring Cost and Reserve [Line Items]
Charge for severance and other postemployment benefits	$ 0.0	$ 0.0	$ 207.7
Number of employees to whom involuntary termination benefits are payable | position			3,600
Restructuring Reserve [Roll Forward]
Amount accrued at beginning of period	101.6
Cash payments	(14.8)
Currency translation adjustment	0.1
Amount accrued at end of period	$ 86.9		$ 86.9