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Schedule II: Valuation and Qualifying Accounts (Details) - SEC Schedule, 12-09, Allowance, Credit Loss - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Changes in valuation and qualifying accounts |  |  |
Balance at Beginning of Year | $ 94.2 | $ 104.0 | $ 92.8
Additions Charged to Cost of Revenue | 30.9 | 40.9 | 43.9
Deductions | (38.7) | (50.8) | (29.6)
Other and Foreign Exchange Impact | 1.5 | 0.1 | (3.1)
Balance at the End of the Year | $ 87.9 | $ 94.2 | $ 104.0

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