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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2023
Earnings Per Share |
Computing Basic and Diluted Earnings Per Share | Basic and diluted earnings per share were computed using the following common share data (shares in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended
​ | ​ | June 30, | ​ | June 30,
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022
Number of common shares outstanding at end of period |  | 404.9 |  | 413.3 |  | 404.9 |  | 413.3
Effect of using weighted average common shares outstanding |  | 1.0 |  | 1.1 |  | 2.5 |  | 1.7
Weighted average basic common shares outstanding |  | 405.9 |  | 414.4 |  | 407.4 |  | 415.0
Dilutive effect of equity-based compensation awards and other contingently issuable shares |  | 1.8 |  | 2.0 |  | 1.7 |  | 2.0
Weighted average diluted common shares outstanding |  | 407.7 |  | 416.4 |  | 409.1 |  | 417.0
Potentially issuable shares |  | 5.4 |  | 5.8 |  | 5.4 |  | 5.8
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding |  | 1.3 |  | 1.4 |  | 1.7 |  | 1.8

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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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