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Earnings (Loss) Per Share (Tables) | 9 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Earnings Per Share | The following is a reconciliation of basic and diluted earnings (loss) per share for the three and nine months ended September 30, 2023 and 2022:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
In millions, except per share amounts | 2023 |  | 2022 |  | 2023 |  | 2022
Numerator for earnings (loss) per share calculation: |  |  |  |  |  |  |
Net income (loss) attributable to CVS Health | $ | 2,261 |  |  | $ | (3,406) |  |  | $ | 6,298 |  |  | $ | 1,977 |
Denominator for earnings (loss) per share calculation: |  |  |  |  |  |  |
Weighted average shares, basic | 1,287 |  |  | 1,315 |  |  | 1,284 |  |  | 1,313 |
Restricted stock units and performance stock units | 2 |  |  | — |  |  | 3 |  |  | 6 |
Stock options and stock appreciation rights | 1 |  |  | — |  |  | 2 |  |  | 5 |
Weighted average shares, diluted | 1,290 |  |  | 1,315 |  |  | 1,289 |  |  | 1,324 |
Earnings (loss) per share: |  |  |  |  |  |  |
Basic | $ | 1.76 |  |  | $ | (2.59) |  |  | $ | 4.90 |  |  | $ | 1.51 |
Diluted | $ | 1.75 |  |  | $ | (2.59) |  |  | $ | 4.88 |  |  | $ | 1.49 |

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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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