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EARNINGS PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Schedule of Computation of Earnings Per Share | The computation of basic and diluted earnings per share for Net income attributable to Wabtec shareholders is as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
In millions, except per share data | 2023 |  | 2022 |  | 2023 |  | 2022
Numerator |  |  |  |  |  |  |
Net income attributable to Wabtec shareholders | $ | 240 |  |  | $ | 160 |  |  | $ | 600 |  |  | $ | 475 |
Denominator |  |  |  |  |  |  |
Weighted average shares outstanding - basic | 178.6 |  |  | 181.3 |  |  | 179.1 |  |  | 182.6 |
Effect of dilutive securities: |  |  |  |  |  |  |
Assumed conversion of dilutive stock-based compensation plans | 0.6 |  |  | 0.6 |  |  | 0.6 |  |  | 0.5 |
Weighted average shares outstanding - diluted | 179.2 |  |  | 181.9 |  |  | 179.7 |  |  | 183.1 |
Net income attributable to Wabtec shareholders per common share |  |  |  |  |  |  |
Basic | $ | 1.34 |  |  | $ | 0.88 |  |  | $ | 3.34 |  |  | $ | 2.60 |
Diluted | $ | 1.33 |  |  | $ | 0.88 |  |  | $ | 3.33 |  |  | $ | 2.59 |

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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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