Business and Asset Actions - Global Cost Reduction Plan (Details) - Global Cost Reduction Plan $ in Millions	3 Months Ended	6 Months Ended	21 Months Ended
Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2025 USD ($) position	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)
Restructuring Cost and Reserve [Line Items]
Charge for severance and other postemployment benefits	$ 66.1	$ 57.0	$ 66.1	$ 150.1
Number of employees to whom involuntary termination benefits are payable \| position			2,400
Cash payments			$ (23.9)
Restructuring Reserve, Foreign Currency Translation Gain (Loss)			(0.9)
Amount accrued	$ 75.3		$ 75.3		$ 34.0

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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