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Allowance for Doubtful Accounts (Tables) | 12 Months Ended
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Sep. 30, 2025
Receivables [Abstract] |
Schedule of Activity of Allowance for Doubtful Accounts | Activity in the allowance for doubtful accounts for the years ended September 30, 2025, 2024, and 2023 was as follows:
(in millions) | 2025 |  | 2024 |  | 2023
Balance, beginning of year | $ | 51.9 |  |  | $ | 59.9 |  |  | $ | 47.8 |
Provision (recovery) for bad debts(1) | 2.3 |  |  | (2.4) |  |  | 12.5 |
Allowance charge-offs | (0.3) |  |  | (6.2) |  |  | (0.5) |
Other | — |  |  | 0.6 |  |  | 0.1 |
Balance, end of year | $ | 53.9 |  |  | $ | 51.9 |  |  | $ | 59.9 |
(1) An additional $0.8 million, $3.0 million, and $4.0 million is included in bad debt expense for the years ended September 30, 2025, 2024, and 2023, respectively, on the consolidated income statement, which is not included in the allowance.

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- Definition Tabular disclosure of allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- References No definition available. + Details
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