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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2026
Earnings Per Share [Abstract] |
Schedule of Calculation of Basic and Diluted Net Earnings (Loss) Per Common Share | The following table sets forth the calculation of basic and diluted net earnings per common share ($ in millions, except per share data in dollars and shares in thousands):
|  | Three Months Ended March 31, |  |
|  | 2026 |  | 2025 |  |  |  |
Earnings attributable to Centene Corporation | $ | 1,541 |  |  | $ | 1,311 |  |  |  |  |
Shares used in computing per share amounts: |  |  |  |  |  |  |
Weighted average number of common shares outstanding | 492,069 |  |  | 496,214 |  |  |  |  |
Common stock equivalents (as determined by applying the treasury stock method) | 3,522 |  |  | 1,966 |  |  |  |  |
Weighted average number of common shares and potential dilutive common shares outstanding | 495,591 |  |  | 498,180 |  |  |  |  |
Net earnings per common share attributable to Centene Corporation: |  |  |  |
Basic earnings per common share | $ | 3.13 |  |  | $ | 2.64 |  |  |  |  |
Diluted earnings per common share | $ | 3.11 |  |  | $ | 2.63 |  |  |  |  |

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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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