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Shares Used in Computing Net Income Per Share (Tables) | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share [Abstract] |
Computation of shares used in calculating basic and diluted net income per common share | The computation of shares used in calculating basic and diluted net income per common share is as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In millions) | 2019 |  | 2018 |  | 2019 |  | 2018
Weighted-average common shares outstanding used for the calculation of net income per share – basic | 392.5 |  |  | 408.4 |  |  | 392.1 |  |  | 410.7 |
Common stock equivalents | 7.1 |  |  | 8.0 |  |  | 7.3 |  |  | 8.3 |
Weighted-average common shares outstanding used for the calculation of net income per share – diluted | 399.6 |  |  | 416.4 |  |  | 399.4 |  |  | 419.0 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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