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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share |
Computing Basic and Diluted Earnings Per Share | Basic and diluted earnings per share were computed using the following common share data for the year ended December 31 (shares in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2022 |  | 2021 |  | 2020
Number of common shares outstanding at end of period |  | 407.9 | ​ | 416.1 |  | 422.8
Effect of using weighted average common shares outstanding |  | 4.9 | ​ | 4.3 |  | 0.2
Weighted average basic common shares outstanding |  | 412.8 | ​ | 420.4 |  | 423.0
Dilutive effect of equity-based compensation awards and other contingently issuable shares |  | 2.2 | ​ | 2.5 |  | 2.1
Weighted average diluted common shares outstanding |  | 415.0 | ​ | 422.9 |  | 425.1
Potentially issuable shares |  | 5.2 | ​ | 5.7 |  | 6.1
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding |  | 1.1 | ​ | 0.6 |  | 1.6
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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