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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Share | The following is a reconciliation of basic and diluted earnings per share for the respective periods:
| Three Months Ended March 31,
In millions, except per share amounts | 2020 |  | 2019
Numerator for earnings per share calculation: |  |  |
Net income | $ | 2,012 |  |  | $ | 1,427 |
Income allocated to participating securities | — |  |  | (2 | )
Net income attributable to noncontrolling interests | (5 | ) |  | (6 | )
Net income attributable to CVS Health | $ | 2,007 |  |  | $ | 1,419 |
Denominator for earnings per share calculation: |  |  |
Weighted average shares, basic | 1,306 |  |  | 1,298 |
Effect of dilutive securities | 6 |  |  | 4 |
Weighted average shares, diluted | 1,312 |  |  | 1,302 |
Earnings per share: |  |  |
Basic | $ | 1.54 |  |  | $ | 1.09 |
Diluted | $ | 1.53 |  |  | $ | 1.09 |

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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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