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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Computation of Earnings Per Share | The computation of earnings per share from operations is as follows:
|  | For the Year Ended December 31,
In millions, except per share data |  | 2021 |  | 2020 |  | 2019
Numerator |  |  |  |  |  |
Net income attributable to Wabtec common shareholders - basic |  | $ | 556 |  |  | $ | 413 |  |  | $ | 325 |
Add: dividends declared - preferred shares |  | — |  |  | — |  |  | 1 |
Net income attributable to Wabtec common shareholders - diluted |  | $ | 556 |  |  | $ | 413 |  |  | $ | 326 |
Denominator |  |  |  |  |  |
Weighted average shares outstanding - basic |  | 187.7 |  |  | 189.9 |  |  | 170.5 |
Effect of dilutive securities: |  |  |  |  |  |
Assumed conversion of preferred shares |  | — |  |  | — |  |  | 6.4 |
Assumed conversion of dilutive stock-based compensation plans |  | 0.4 |  |  | 0.5 |  |  | 0.4 |
Weighted average shares outstanding - diluted |  | 188.1 |  |  | 190.4 |  |  | 177.3 |
Net income per common share attributable to Wabtec shareholders |  |  |  |  |  |
Basic |  | $ | 2.96 |  |  | $ | 2.18 |  |  | $ | 1.91 |
Diluted |  | $ | 2.96 |  |  | $ | 2.17 |  |  | $ | 1.84 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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