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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Reconciliation of Basic Shares to Diluted Shares | The following table is a reconciliation of basic shares to diluted shares.
years ended December 31 (in millions) |  | 2017 |  |  | 2016 |  |  | 2015 |
Basic shares |  |  | 543 |  |  |  | 546 |  |  |  | 545 |
Effect of dilutive securities |  |  | 12 |  |  |  | 5 |  |  |  | 4 |
Diluted shares |  |  | 555 |  |  |  | 551 |  |  |  | 549 |

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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://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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