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EARNINGS PER SHARE (Tables) | 6 Months Ended
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Jun. 30, 2023
EARNINGS PER SHARE |
Schedule of basic and diluted earnings per share | The computations for basic and diluted earnings per share for the three and six months ended June 30, 2023 and 2022 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, 2023 | ​ | Six Months Ended June 30, 2023
​ |  | ​ | ​ |  | Weighted |  | Per |  | ​ | ​ |  | Weighted |  | Per
​ | ​ | ​ | ​ | ​ | Average | ​ | Common | ​ | ​ | ​ | ​ | Average | ​ | Common
​ | ​ | Net | ​ | Common | ​ | Share | ​ | Net | ​ | Common | ​ | Share
(In millions, except per share amounts) | ​ | Income | ​ | Shares | ​ | Amount | ​ | Income | ​ | Shares | ​ | Amount
Basic | ​ | $ | 80.8 |  | 35.5 | ​ | $ | 2.28 | ​ | $ | 114.8 |  | 35.8 | ​ | $ | 3.21
Effect of Dilutive Securities | ​ | ​ | ​ |  | 0.2 | ​ | ​ | (0.02) | ​ | ​ | ​ |  | 0.2 | ​ | ​ | (0.02)
Diluted | ​ | $ | 80.8 | ​ | 35.7 | ​ | $ | 2.26 | ​ | $ | 114.8 | ​ | 36.0 | ​ | $ | 3.19
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended June 30, 2022 | ​ | Six Months Ended June 30, 2022
​ | ​ | ​ | ​ |  | Weighted |  | Per |  | ​ | ​ |  | Weighted |  | Per
​ | ​ | ​ | ​ | ​ | Average | ​ | Common | ​ | ​ | ​ | ​ | Average | ​ | Common
​ | ​ | Net | ​ | Common | ​ | Share | ​ | Net | ​ | Common | ​ | Share
(In millions, except per share amounts) | ​ | Income | ​ | Shares | ​ | Amount | ​ | Income | ​ | Shares | ​ | Amount
Basic | ​ | $ | 380.7 |  | 39.9 | ​ | $ | 9.54 | ​ | $ | 719.9 |  | 40.4 | ​ | $ | 17.82
Effect of Dilutive Securities | ​ | ​ | ​ |  | 0.2 | ​ | ​ | (0.05) | ​ | ​ | ​ |  | 0.3 | ​ | ​ | (0.13)
Diluted | ​ | $ | 380.7 | ​ | 40.1 | ​ | $ | 9.49 | ​ | $ | 719.9 | ​ | 40.7 | ​ | $ | 17.69

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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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