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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Calculation of Basic and Diluted Net Earnings Per Common Share | The following table sets forth the calculation of basic and diluted net earnings per common share ($ in millions, except shares in thousands and per share data in dollars):
| Three Months Ended March 31,
| 2019 |  | 2018
Earnings attributable to Centene Corporation | $ | 522 |  |  | $ | 340 |
Shares used in computing per share amounts: |  |  |  |
Weighted average number of common shares outstanding | 412,924 |  |  | 347,843 |
Common stock equivalents (as determined by applying the treasury stock method) | 6,828 |  |  | 7,537 |
Weighted average number of common shares and potential dilutive common shares outstanding | 419,752 |  |  | 355,380 |
Net earnings per common share attributable to Centene Corporation:
Basic earnings per common share | $ | 1.26 |  |  | $ | 0.98 |
Diluted earnings per common share | $ | 1.24 |  |  | $ | 0.96 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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