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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | We computed our basic and diluted earnings per share of common stock for each period as follows:
Years Ended (In Millions, Except Per Share Amounts) |  | Dec 31, 2016 |  | Dec 26, 2015 |  | Dec 27, 2014
Net income available to common stockholders |  | $ | 10,316 |  |  | $ | 11,420 |  |  | $ | 11,704 |
Weighted average shares of common stock outstanding—basic |  | 4,730 |  |  | 4,742 |  |  | 4,901 |
Dilutive effect of employee incentive plans |  | 53 |  |  | 64 |  |  | 75 |
Dilutive effect of convertible debt |  | 92 |  |  | 88 |  |  | 80 |
Weighted average shares of common stock outstanding—diluted |  | 4,875 |  |  | 4,894 |  |  | 5,056 |
Basic earnings per share of common stock |  | $ | 2.18 |  |  | $ | 2.41 |  |  | $ | 2.39 |
Diluted earnings per share of common stock |  | $ | 2.12 |  |  | $ | 2.33 |  |  | $ | 2.31 |

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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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