Restructuring Charges - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
Mar. 31, 2025	Mar. 31, 2025	Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 97.0
Restructuring charges, net of tax			$ 73.0
Restructuring charges, per diluted share (in USD per share)			$ 0.64
Expected restructuring charges	$ 97.0	$ 97.0
Restructuring expenses	12.0	26.0
Accruals for restructuring charges	$ 44.0	$ 44.0	$ 70.0
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges			92.0
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 5.0

Restructuring Charges, Net Of Tax

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- Definition

Restructuring Charges, Per Diluted Share

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- Definition

Amount expected to be recognized in earnings for the specified restructuring cost.

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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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