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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Schedule of earnings per share reconciliation | The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share of common stock:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(in millions, except per share amounts) | 2020 |  | 2019 |  | 2020 |  | 2019
Basic earnings per share: |  |  |  |  |  |  |
Net earnings attributable to BorgWarner Inc. | $ | 111 |  |  | $ | 194 |  |  | $ | 142 |  |  | $ | 526 |
Weighted average shares of common stock outstanding | 206.0 |  |  | 205.3 |  |  | 205.9 |  |  | 205.9 |
Basic earnings per share of common stock | $ | 0.54 |  |  | $ | 0.94 |  |  | $ | 0.69 |  |  | $ | 2.56 |
Diluted earnings per share: |  |  |  |  |  |  |
Net earnings attributable to BorgWarner Inc. | $ | 111 |  |  | $ | 194 |  |  | $ | 142 |  |  | $ | 526 |
Weighted average shares of common stock outstanding | 206.0 |  |  | 205.3 |  |  | 205.9 |  |  | 205.9 |
Effect of stock-based compensation | 1.3 |  |  | 1.0 |  |  | 0.8 |  |  | 0.9 |
Weighted average shares of common stock outstanding including dilutive shares | 207.3 |  |  | 206.3 |  |  | 206.7 |  |  | 206.8 |
Diluted earnings per share of common stock | $ | 0.53 |  |  | $ | 0.94 |  |  | $ | 0.69 |  |  | $ | 2.54 |
Anti-dilutive stock-based awards excluded from the calculation of diluted earnings per share: | — |  |  | 0.1 |  |  | — |  |  | 0.1 |

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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=6371337&loc=d3e3550-109257 + Details
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