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Quarterly Selected Financial Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Selected Financial Information | Quarterly selected financial information for 2018 and 2017 is as follows: (In millions, except per share data in dollars) (Unaudited)
| For the Quarter Ended
| March 31, 2018 |  | June 30, 2018 |  | September 30, 2018 |  | December 31, 2018
Total revenues | $ | 13,194 |  |  | $ | 14,181 |  |  | $ | 16,182 |  |  | $ | 16,559 |
Net earnings attributable to Centene Corporation | $ | 340 |  |  | $ | 300 |  |  | $ | 19 |  |  | $ | 241 |
Net earnings per common share attributable to Centene Corporation:
Basic earnings per common share | $ | 0.98 |  |  | $ | 0.77 |  |  | $ | 0.05 |  |  | $ | 0.59 |
Diluted earnings per common share | $ | 0.96 |  |  | $ | 0.75 |  |  | $ | 0.05 |  |  | $ | 0.57 |
| For the Quarter Ended
| March 31, 2017 |  | June 30, 2017 |  | September 30, 2017 |  | December 31, 2017
Total revenues | $ | 11,724 |  |  | $ | 11,954 |  |  | $ | 11,898 |  |  | $ | 12,806 |
Net earnings attributable to Centene Corporation | $ | 139 |  |  | $ | 254 |  |  | $ | 205 |  |  | $ | 230 |
Net earnings per common share attributable to Centene Corporation:
Basic earnings per common share | $ | 0.40 |  |  | $ | 0.74 |  |  | $ | 0.59 |  |  | $ | 0.67 |
Diluted earnings per common share | $ | 0.39 |  |  | $ | 0.72 |  |  | $ | 0.58 |  |  | $ | 0.65 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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