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Earnings Per Share | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | NOTE 4 — 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 equity awards and potential shares, computed using the treasury stock method. The following table sets forth the computation of basic and diluted earnings per share for the quarters and nine months ended September 30, 2018 and 2017 (dollars and shares in millions, except per share amounts):
|  | Quarter |  |  | Nine Months |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Net income attributable to HCA Healthcare, Inc. |  | $ | 759 |  |  | $ | 426 |  |  | $ | 2,723 |  |  | $ | 1,742 |
Weighted average common shares outstanding |  |  | 345.823 |  |  |  | 360.170 |  |  |  | 348.411 |  |  |  | 365.398 |
Effect of dilutive incremental shares |  |  | 7.816 |  |  |  | 9.664 |  |  |  | 7.713 |  |  |  | 9.615 |
Shares used for diluted earnings per share |  |  | 353.639 |  |  |  | 369.834 |  |  |  | 356.124 |  |  |  | 375.013 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings |  | $ | 2.20 |  |  | $ | 1.18 |  |  | $ | 7.82 |  |  | $ | 4.77 |
Diluted earnings |  | $ | 2.15 |  |  | $ | 1.15 |  |  | $ | 7.65 |  |  | $ | 4.64 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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