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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2019
Earnings Per Share [Abstract] |
Schedule of Computations of Basic and Diluted 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 2019, 2018 and 2017, we repurchased 7.949 million shares, 14.070 million shares and 25.092 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, 2019, 2018 and 2017 (dollars and shares in millions, except per share amounts):
|  | 2019 |  |  | 2018 |  |  | 2017 |
Net income attributable to HCA Healthcare, Inc. |  | $ | 3,505 |  |  | $ | 3,787 |  |  | $ | 2,216 |
Weighted average common shares outstanding |  |  | 341.210 |  |  |  | 347.297 |  |  |  | 362.305 |
Effect of dilutive incremental shares |  |  | 7.016 |  |  |  | 8.006 |  |  |  | 9.916 |
Shares used for diluted earnings per share |  |  | 348.226 |  |  |  | 355.303 |  |  |  | 372.221 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 10.27 |  |  | $ | 10.90 |  |  | $ | 6.12 |
Diluted earnings per share |  | $ | 10.07 |  |  | $ | 10.66 |  |  | $ | 5.95 |

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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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