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Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions | Total | Adoption of new accounting standard, adjustment | Total CVS Health Shareholders’ Equity | Total CVS Health Shareholders’ Equity Adoption of new accounting standard, adjustment | [2] | Common Shares | Treasury Shares | Common Stock and Capital Surplus | [3] | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss) Adoption of new accounting standard, adjustment | [2] | Noncontrolling Interests
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Shares outstanding, beginning of year balance (in shares) at Dec. 31, 2020 |  |  |  |  |  |  | 1,733 |  |  |  |  |  |  |
Treasury shares outstanding, beginning of year balance (in shares) at Dec. 31, 2020 | [1] |  |  |  |  |  |  | (423) |  |  |  |  |  |
Beginning of year balance at Dec. 31, 2020 |  | $ 69,701 | $ (766) | [2] | $ 69,389 | $ (766) |  | $ (28,178) | [1] | $ 46,513 | $ 49,640 | $ 1,414 | $ (766) | $ 312
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 7,989 | 91 |  | 8,001 |  |  |  |  |  | 8,001 |  |  | (12)
Other comprehensive income (loss) |  | (314) |  |  | (314) |  |  |  |  |  |  | (314) |  |
Stock option activity, stock awards and other (in shares) |  |  |  |  |  |  | 11 |  |  |  |  |  |  |
Stock option activity, stock awards and other |  | 864 |  |  | 864 |  |  |  |  | 864 |  |  |  |
ESPP issuances, net of purchase of treasury shares (in shares) | [1] |  |  |  |  |  |  | 1 |  |  |  |  |  |
ESPP issuances, net of purchase of treasury shares |  | 5 |  |  | 5 |  |  | $ 5 | [1] |  |  |  |  |
Common stock dividends |  | (2,644) |  |  | (2,644) |  |  |  |  |  | (2,644) |  |  |
Other increases (decreases) in noncontrolling interests |  | 6 |  |  |  |  |  |  |  |  |  |  |  | 6
Shares outstanding, end of year balance (in shares) at Dec. 31, 2021 |  |  |  |  |  |  | 1,744 |  |  |  |  |  |  |
Treasury shares outstanding, end of year balance (in shares) at Dec. 31, 2021 | [1] |  |  |  |  |  |  | (422) |  |  |  |  |  |
End of year balance at Dec. 31, 2021 |  | 74,841 |  |  | 74,535 |  |  | $ (28,173) | [1] | 47,377 | 54,997 | 334 |  | 306
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 4,327 | 162 |  | 4,311 |  |  |  |  |  | 4,311 |  |  | 16
Other comprehensive income (loss) |  | (1,598) |  |  | (1,598) |  |  |  |  |  |  | (1,598) |  |
Stock option activity, stock awards and other (in shares) |  |  |  |  |  |  | 14 |  |  |  |  |  |  |
Stock option activity, stock awards and other |  | 816 |  |  | 816 |  |  |  |  | 816 |  |  |  |
Purchase of treasury shares, net of ESPP issuances (in shares) | [1] |  |  |  |  |  |  | (36) |  |  |  |  |  |
Purchase of treasury shares, net of ESPP issuances |  | (3,685) |  |  | (3,685) |  |  | $ (3,685) | [1] |  |  |  |  |
Common stock dividends |  | (2,910) |  |  | (2,910) |  |  |  |  |  | (2,910) |  |  |
Other increases (decreases) in noncontrolling interests |  | $ (22) |  |  |  |  |  |  |  |  |  |  |  | (22)
Shares outstanding, end of year balance (in shares) at Dec. 31, 2022 |  |  |  |  |  |  | 1,758 |  |  |  |  |  |  |
Treasury shares outstanding, end of year balance (in shares) at Dec. 31, 2022 |  | (458) |  |  |  |  |  | (458) | [1] |  |  |  |  |
End of year balance at Dec. 31, 2022 |  | $ 71,769 | $ 454 |  | 71,469 |  |  | $ (31,858) | [1] | 48,193 | 56,398 | (1,264) |  | 300
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 8,368 |  |  | 8,344 |  |  |  |  |  | 8,344 |  |  | 24
Other comprehensive income (loss) |  | 967 |  |  | 967 |  |  |  |  |  |  | 967 |  |
Stock option activity, stock awards and other (in shares) |  |  |  |  |  |  | 10 |  |  |  |  |  |  |
Stock option activity, stock awards and other |  | 795 |  |  | 795 |  |  |  |  | 795 |  |  |  |
Purchase of treasury shares, net of ESPP issuances (in shares) | [1] |  |  |  |  |  |  | (22) |  |  |  |  |  |
Purchase of treasury shares, net of ESPP issuances |  | (1,992) |  |  | (1,992) |  |  | $ (1,980) | [1] | (12) |  |  |  |
Common stock dividends |  | (3,138) |  |  | (3,138) |  |  |  |  |  | (3,138) |  |  |
Acquisition of noncontrolling interests |  | 66 |  |  |  |  |  |  |  |  |  |  |  | 66
Other increases (decreases) in noncontrolling interests |  | $ (199) |  |  | 16 |  |  |  |  | 16 |  |  |  | (215)
Shares outstanding, end of year balance (in shares) at Dec. 31, 2023 |  |  |  |  |  |  | 1,768 |  |  |  |  |  |  |
Treasury shares outstanding, end of year balance (in shares) at Dec. 31, 2023 |  | (480) |  |  |  |  |  | (480) | [1] |  |  |  |  |
End of year balance at Dec. 31, 2023 |  | $ 76,636 |  |  | $ 76,461 |  |  | $ (33,838) | [1] | $ 48,992 | $ 61,604 | $ (297) |  | $ 175
[1] | Treasury shares include 1 million shares held in trust for each of the years ended December 31, 2023, 2022 and 2021. Treasury stock includes $29 million related to shares held in trust for each of the years ended December 31, 2023, 2022 and 2021. See Note 1 ‘‘Significant Accounting Policies’’ for additional information.
[2] | Reflects the adoption of Accounting Standards Update (“ASU”) 2018-12, Targeted Improvements to the Accounting for Long-Duration Contracts (Topic 944) during the year ended December 31, 2021. See Note 1 ‘‘Significant Accounting Policies’’ for additional information.
[3] | Common stock and capital surplus includes the par value of common stock of $18 million as of December 31, 2023 and 2022 and $17 million as of December 31, 2021.

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