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Net Income Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Schedule Of Earnings Per Share Basic And Diluted | The following table sets forth the computation of basic and diluted net income per share (in millions, except per share amounts):
| Three months ended June 30, |  | Six months ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
NUMERATOR: |  |  |  |  |  |  |
Net income | $ | 733 |  |  | $ | 743 |  |  | $ | 1,195 |  |  | $ | 1,082 |
DENOMINATOR: |  |  |  |  |  |  |  |  |  |  |
Weighted-average shares outstanding, basic | 578 |  |  | 604 |  |  | 582 |  |  | 608 |
Dilutive effect of Employee stock options and restricted stock units | 1 |  |  | 1 |  |  | 1 |  |  | 2 |
Adjusted weighted-average shares outstanding, diluted | 579 |  |  | 605 |  |  | 583 |  |  | 610 |
NET INCOME PER SHARE: |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 1.27 |  |  | $ | 1.23 |  |  | $ | 2.05 |  |  | $ | 1.78 |
Diluted | $ | 1.27 |  |  | $ | 1.23 |  |  | $ | 2.05 |  |  | $ | 1.77 |
Potentially dilutive amounts excluded from calculations: |  |  |  |  |  |  |  |  |  |  |
Restricted stock units | 1 |  |  | — |  |  | 1 |  |  | — |

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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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