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Earnings per Share and Stock Repurchase Program (Tables) | 12 Months Ended
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Dec. 31, 2024
Earnings per Share and Stock Repurchase Program |
Summary of reconciliation of the calculation of earnings per share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years Ended December 31,
​ | ​ | 2024 | ​ | 2023 | ​ | 2022
​ | ​ | ​ | ​ | ​ | ​ | ​ | Per | ​ | ​ | ​ | ​ | ​ | ​ | Per | ​ | ​ | ​ | ​ | ​ | ​ | Per
​ | ​ | Net | ​ | ​ | ​ | Share | ​ | Net | ​ | ​ | ​ | Share | ​ | Net | ​ | ​ | ​ | Share
​ |  | Income |  | Shares |  | Amount |  | Income |  | Shares |  | Amount |  | Income |  | Shares |  | Amount
​ | ​ | (Amounts in millions, except per share information)
Basic EPS | ​ | $ | 291.2 | ​ | 33.5 | ​ | $ | 8.70 | ​ | $ | 262.1 | ​ | 33.4 | ​ | $ | 7.85 | ​ | $ | 251.5 | ​ | 33.5 | ​ | $ | 7.51
Dilutive securities, principally common stock options | ​ |  | — | ​ | — | ​ |  | (0.01) | ​ |  | — | ​ | 0.1 | ​ |  | (0.03) | ​ |  | — | ​ | 0.1 | ​ |  | (0.03)
Diluted EPS | ​ | $ | 291.2 | ​ | 33.5 | ​ | $ | 8.69 | ​ | $ | 262.1 | ​ | 33.5 | ​ | $ | 7.82 | ​ | $ | 251.5 |  | 33.6 | ​ | $ | 7.48

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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