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Earnings Per Share | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Share | NOTE 5 — EARNINGS PER SHARE We compute basic earnings per share using the weighted average number of common shares outstanding. We compute diluted earnings per share using the weighted average number of common shares outstanding plus the dilutive effect of outstanding stock options, SARs, RSUs and PSUs, computed using the treasury stock method. During 2020, 2019 and 2018, we repurchased 3.287 million shares, 7.949 million shares and 14.070 million shares, respectively, of our common stock. The following table sets forth the computations of basic and diluted earnings per share for the years ended December 31, 2020, 2019 and 2018 (dollars and shares in millions, except per share amounts):
|  | 2020 |  |  | 2019 |  |  | 2018 |
Net income attributable to HCA Healthcare, Inc. |  | $ | 3,754 |  |  | $ | 3,505 |  |  | $ | 3,787 |
Weighted average common shares outstanding |  |  | 338.274 |  |  |  | 341.210 |  |  |  | 347.297 |
Effect of dilutive incremental shares |  |  | 5.331 |  |  |  | 7.016 |  |  |  | 8.006 |
Shares used for diluted earnings per share |  |  | 343.605 |  |  |  | 348.226 |  |  |  | 355.303 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 11.10 |  |  | $ | 10.27 |  |  | $ | 10.90 |
Diluted earnings per share |  | $ | 10.93 |  |  | $ | 10.07 |  |  | $ | 10.66 |

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