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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Calculation of basic and diluted EPS | The following table presents the calculation of basic and diluted EPS for the three and nine months ended September 30, 2018, and 2017 (in millions, except per-share amounts):
|  | Three months ended September 30 |  | Nine months ended September 30
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Basic EPS |  |  |  |  |  |  |  |
Net Income |  | $ | 1,869 |  |  | $ | 190 |  |  | $ | 3,425 |  |  | $ | 814 |
Less: Net income allocated to participating securities |  | (8 | ) |  | (1 | ) |  | (16 | ) |  | (4 | )
Net Income, net of participating securities |  | 1,861 |  |  | 189 |  |  | 3,409 |  |  | 810 |
Weighted average number of basic shares |  | 761.7 |  |  | 765.5 |  |  | 764.3 |  |  | 764.9 |
Basic EPS |  | $ | 2.44 |  |  | $ | 0.25 |  |  | $ | 4.46 |  |  | $ | 1.06 |
Diluted EPS |  |  |  |  |  |  |  |
Net income, net of participating securities |  | $ | 1,861 |  |  | $ | 189 |  |  | $ | 3,409 |  |  | $ | 810 |
Weighted average number of basic shares |  | 761.7 |  |  | 765.5 |  |  | 764.3 |  |  | 764.9 |
Dilutive effect of potentially dilutive securities |  | 1.6 |  |  | 0.9 |  |  | 1.5 |  |  | 0.8 |
Total diluted weighted average common shares |  | 763.3 |  |  | 766.4 |  |  | 765.8 |  |  | 765.7 |
Diluted EPS |  | $ | 2.44 |  |  | $ | 0.25 |  |  | $ | 4.45 |  |  | $ | 1.06 |

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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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