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Earnings Per Share (Notes) | 12 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Earnings per share | EARNINGS PER SHARE Basic earnings per share is based on the average number of shares of common stock outstanding during the year. Diluted earnings per share is based on the average number of shares of common stock used for the basic earnings per share calculation, adjusted for the dilutive effect of stock options and restricted stock units using the “treasury stock” method. The following table sets forth the computation of basic and diluted earnings per share.
| Year Ended September 30,
| 2025 |  | 2024 |  | 2023
Net earnings | $ | 216.2 |  |  | $ | 246.5 |  |  | $ | 165.5 |
shares in millions |  |  |  |  |
Weighted-average shares for basic earnings per share | 126.9 |  |  | 130.3 |  |  | 133.0 |
Effect of dilutive securities: |  |  |  |  |
Stock options | 0.2 |  |  | 0.2 |  |  | 0.1 |
Restricted stock units | 0.3 |  |  | 0.3 |  |  | 0.3 |
Performance-based restricted stock units | 1.1 |  |  | 1.5 |  |  | 0.7 |
Weighted-average shares for diluted earnings per share | 128.5 |  |  | 132.3 |  |  | 134.1 |
Basic earnings per share | $ | 1.70 |  |  | $ | 1.89 |  |  | $ | 1.24 |
Diluted earnings per share | $ | 1.68 |  |  | $ | 1.86 |  |  | $ | 1.23 |
The following table details the securities that have been excluded from the calculation of weighted-average shares for diluted earnings per share as they were anti-dilutive.
| Year Ended September 30,
shares in millions | 2025 |  | 2024 |  | 2023
Restricted stock units | 0.1 |  |  | — |  |  | 0.1 |
Performance-based restricted stock units | — |  |  | — |  |  | 0.1 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/260/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-3 + Details
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