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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2025
Earnings Per Share [Abstract] |
Schedule of 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 per share data in dollars and shares in thousands):
| Year Ended December 31,
| 2025 |  | 2024 |  | 2023
Earnings (loss) attributable to Centene Corporation | $ | (6,674) |  |  | $ | 3,305 |  |  | $ | 2,702 |
Shares used in computing per share amounts: |  |  |  |  |
Weighted average number of common shares outstanding | 493,116 |  |  | 521,790 |  |  | 543,319 |
Common stock equivalents (as determined by applying the treasury stock method) | — |  |  | 1,954 |  |  | 2,385 |
Weighted average number of common shares and potential dilutive common shares outstanding | 493,116 |  |  | 523,744 |  |  | 545,704 |
Net earnings (loss) per common share attributable to Centene Corporation: |  |  |  |  |
Basic earnings (loss) per common share | $ | (13.53) |  |  | $ | 6.33 |  |  | $ | 4.97 |
Diluted earnings (loss) per common share | $ | (13.53) |  |  | $ | 6.31 |  |  | $ | 4.95 |

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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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