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Earnings Per Share (Tables) | 12 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Denominators for Basic and Diluted Earnings Per Share | The following table sets forth a reconciliation of the denominators of basic and diluted earnings per share:
| Fiscal Year Ended
| September 30, 2025 |  | September 30, 2024 |  | September 30, 2023
| (in millions)
Denominator for basic earnings per share | 132.4 |  |  | 135.5 |  |  | 138.6 |
Potential common shares | 0.9 |  |  | 1.0 |  |  | 1.5 |
Denominator for diluted earnings per share | 133.3 |  |  | 136.5 |  |  | 140.1 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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