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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2019
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 six months ended June 30, 2019, and 2018 (in millions, except per-share amounts):
|  | Three months ended June 30 |  | Six months ended June 30
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Basic EPS |  |  |  |  |  |  |  |
Net Income |  | $ | 635 |  |  | $ | 848 |  |  | $ | 1,266 |  |  | $ | 1,556 |
Less: Net income allocated to participating securities |  | (3 | ) |  | (5 | ) |  | (6 | ) |  | (8 | )
Net Income, net of participating securities |  | 632 |  |  | 843 |  |  | 1,260 |  |  | 1,548 |
Weighted average number of basic shares |  | 748.3 |  |  | 765.7 |  |  | 748.7 |  |  | 765.7 |
Basic EPS |  | $ | 0.84 |  |  | $ | 1.10 |  |  | $ | 1.68 |  |  | $ | 2.02 |
Diluted EPS |  |  |  |  |  |  |  |
Net income, net of participating securities |  | $ | 632 |  |  | $ | 843 |  |  | $ | 1,260 |  |  | $ | 1,548 |
Weighted average number of basic shares |  | 748.3 |  |  | 765.7 |  |  | 748.7 |  |  | 765.7 |
Dilutive effect of potentially dilutive securities |  | 1.2 |  |  | 1.7 |  |  | 1.3 |  |  | 1.5 |
Total diluted weighted average common shares |  | 749.5 |  |  | 767.4 |  |  | 750.0 |  |  | 767.2 |
Diluted EPS |  | $ | 0.84 |  |  | $ | 1.10 |  |  | $ | 1.68 |  |  | $ | 2.02 |

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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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