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Stockholders' Equity (Tables) | 12 Months Ended
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Sep. 30, 2025
Equity [Abstract] |
Components of Other Comprehensive Income | Changes in Accumulated other comprehensive income by component for fiscal years 2025 and 2024 were as follows:
(In millions) |  | Unamortized benefit plan credits |  | Currency translation adjustments |  | Change in fair value of cash flow hedges |  | Accumulated other comprehensive income
Balance as of September 30, 2023 |  | $ | 13.4 |  |  | $ | (6.0) |  |  | $ | 5.8 |  |  | $ | 13.2 |
Other comprehensive loss before reclassification |  | — |  |  | (0.4) |  |  | (10.0) |  |  | (10.4) |
(Gain) loss reclassified out of accumulated other comprehensive income |  | (2.1) |  |  | 4.4 |  |  | 2.3 |  |  | 4.6 |
Tax benefit |  | 0.4 |  |  | 0.2 |  |  | 1.9 |  |  | 2.5 |
Balance as of September 30, 2024 |  | 11.7 |  |  | (1.8) |  |  | — |  |  | 9.9 |
Other comprehensive loss before reclassification |  | — |  |  | (3.0) |  |  | — |  |  | (3.0) |
Gain reclassified out of accumulated other comprehensive income |  | (2.1) |  |  | — |  |  | — |  |  | (2.1) |
Tax benefit |  | 0.4 |  |  | — |  |  | — |  |  | 0.4 |
Balance as of September 30, 2025 |  | $ | 10.0 |  |  | $ | (4.8) |  |  | $ | — |  |  | $ | 5.2 |
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income | Amounts reclassified from Accumulated other comprehensive (loss) income follow for the years ended September 30:
(in millions) |  | 2025 |  | 2024 |  | 2023
Amortization of pension and other postretirement plan prior service credits (a) |  | $ | (2.1) |  |  | $ | (2.1) |  |  | $ | (2.1) |
Business disposal (b) |  | — |  |  | 4.4 |  |  | 30.6 |
Loss on hedging activity (c) |  | — |  |  | 2.3 |  |  | 12.7 |
Tax effect of reclassifications |  | 0.4 |  |  | 2.5 |  |  | 3.0 |
Total amounts reclassified, net of tax |  | $ | (1.7) |  |  | $ | 7.1 |  |  | $ | 44.2 |
(a)Amortization of unrecognized prior service credits included in net periodic benefit income for pension and other postretirement plans was reported in Net pension and other postretirement plan expenses (income) within the Consolidated Statements of Comprehensive Income. The Company releases the income tax effects from Accumulated other comprehensive income as benefit plan credits are amortized into earnings. (b)Reflects the realization of $4.4 million of currency translation losses included in the net assets held for sale, recognized upon recording an impairment loss in connection with the classification of a former Global Products business as held for sale and realized upon the completion of the sale in the first quarter of fiscal 2024. Additionally, includes the realization of $30.7 million in currency translation losses and $0.1 million in unamortized pension prior service credits, both recognized within (Loss) income from discontinued operations, net of tax in the Consolidated Statement of Comprehensive Income in fiscal 2023. (c)Represents the realization of gains from cash flow hedges reported in Net interest and other financing expenses within the Consolidated Statements of Comprehensive Income.

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