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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Numerator for earnings per share calculation: |  |  |  |
Net income attributable to CVS Health, basic | $ 1,770 | $ 1,901 | $ 2,883 | $ 4,037
Net income attributable to CVS Health, diluted | $ 1,770 | $ 1,901 | $ 2,883 | $ 4,037
Denominator for earnings per share calculation: |  |  |  |
Weighted average shares, basic (in shares) | 1,256 | 1,283 | 1,258 | 1,283
Weighted average shares, diluted (in shares) | 1,259 | 1,287 | 1,263 | 1,289
Earnings per share: |  |  |  |
Basic (in dollars per share) | $ 1.41 | $ 1.48 | $ 2.29 | $ 3.15
Diluted (in dollars per share) | $ 1.41 | $ 1.48 | $ 2.28 | $ 3.13
Restricted stock units and performance stock units |  |  |  |
Denominator for earnings per share calculation: |  |  |  |
Effect of dilutive securities (in shares) | 1 | 2 | 3 | 4
Stock options and stock appreciation rights |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Antidilutive securities excluded from computation of EPS (in shares) | 7 | 9 | 7 | 6
Denominator for earnings per share calculation: |  |  |  |
Effect of dilutive securities (in shares) | 2 | 2 | 2 | 2

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