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Earnings Per Common Share ("EPS") | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Earnings Per Common Share (EPS) | Earnings Per Common Share (“EPS”)
|  | 2017 |  | 2016 |  | 2015
Income from continuing operations |  | $ | 1,340 |  |  | $ | 1,018 |  |  | $ | 926 |
Income from discontinued operations |  | N/A |  |  | 625 |  |  | 357 |
Net Income |  | $ | 1,340 |  |  | $ | 1,643 |  |  | $ | 1,283 |
Weighted-average common shares outstanding (for basic calculation) |  | 347 |  |  | 394 |  |  | 435 |
Effect of dilutive share-based employee compensation |  | 8 |  |  | 6 |  |  | 8 |
Weighted-average common and dilutive potential common shares outstanding (for diluted calculation) |  | 355 |  |  | 400 |  |  | 443 |
Basic EPS from continuing operations |  | $ | 3.86 |  |  | $ | 2.58 |  |  | $ | 2.13 |
Basic EPS from discontinued operations |  | N/A |  |  | 1.59 |  |  | 0.82 |
Basic EPS |  | $ | 3.86 |  |  | $ | 4.17 |  |  | $ | 2.95 |
Diluted EPS from continuing operations |  | $ | 3.77 |  |  | $ | 2.54 |  |  | $ | 2.09 |
Diluted EPS from discontinued operations |  | N/A |  |  | 1.56 |  |  | $ | 0.81 |
Diluted EPS |  | $ | 3.77 |  |  | $ | 4.10 |  |  | $ | 2.90 |
Unexercised employee stock options and stock appreciation rights (in millions) excluded from the diluted EPS computation(a) |  | 2.3 |  |  | 5.0 |  |  | 4.5 |
(a) These unexercised employee stock options and stock appreciation rights were not included in the computation of diluted EPS because to do so would have been antidilutive for the periods presented.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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