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Earnings Per Share | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per 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 |
The calculation of diluted earnings per common share for the three months ended March 31, 2019 and 2018 excludes the impact of 1.4 million and 9 thousand shares, respectively, related to anti-dilutive stock options, restricted stock and restricted stock units.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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