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Earnings (Loss) Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings (Loss) Per Share |
Reconciliation of basic and diluted earnings per common share |
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
In millions, except per share amounts |  | 2018 |  | 2017 |  | 2018 |  | 2017
Numerator for earnings (loss) per share calculation: |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations |  | $ | 1,390 |  | $ | 1,285 |  | $ | (174) |  | $ | 3,344
Income from continuing operations allocated to participating securities |  |  | (1) |  |  | (3) |  |  | (3) |  |  | (12)
Income from continuing operations attributable to noncontrolling interests |  |  | — |  |  | — |  |  | — |  |  | (1)
Income (loss) from continuing operations attributable to CVS Health |  | $ | 1,389 |  | $ | 1,282 |  | $ | (177) |  | $ | 3,331
Denominator for earnings (loss) per share calculation: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares, basic |  |  | 1,020 |  |  | 1,016 |  |  | 1,018 |  |  | 1,022
Effect of dilutive securities |  |  | 2 |  |  | 4 |  |  | — |  |  | 4
Weighted average shares, diluted |  |  | 1,022 |  |  | 1,020 |  |  | 1,018 |  |  | 1,026
Earnings (loss) per share from continuing operations: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.36 |  | $ | 1.26 |  | $ | (0.17) |  | $ | 3.26
Diluted |  | $ | 1.36 |  | $ | 1.26 |  | $ | (0.17) |  | $ | 3.25

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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://www.xbrl.org/2003/role/presentationRef -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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