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Earnings Per Common Share ("EPS") (Tables) | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
Earnings Per Common Share |
|  | 2018 |  | 2017 |  | 2016
Income from continuing operations |  | $ | 1,542 |  |  | $ | 1,340 |  |  | $ | 1,018 |
Income from discontinued operations |  | N/A |  |  | N/A |  |  | 625 |
Net Income |  | $ | 1,542 |  |  | $ | 1,340 |  |  | $ | 1,643 |
Weighted-average common shares outstanding (for basic calculation) |  | 322 |  |  | 347 |  |  | 394 |
Effect of dilutive share-based employee compensation |  | 7 |  |  | 8 |  |  | 6 |
Weighted-average common and dilutive potential common shares outstanding (for diluted calculation) |  | 329 |  |  | 355 |  |  | 400 |
Basic EPS from continuing operations |  | $ | 4.80 |  |  | $ | 3.86 |  |  | $ | 2.58 |
Basic EPS from discontinued operations |  | N/A |  |  | N/A |  |  | 1.59 |
Basic EPS |  | $ | 4.80 |  |  | $ | 3.86 |  |  | $ | 4.17 |
Diluted EPS from continuing operations |  | $ | 4.69 |  |  | $ | 3.77 |  |  | $ | 2.54 |
Diluted EPS from discontinued operations |  | N/A |  |  | N/A |  |  | $ | 1.56 |
Diluted EPS |  | $ | 4.69 |  |  | $ | 3.77 |  |  | $ | 4.10 |
Unexercised employee stock options and stock appreciation rights (in millions) excluded from the diluted EPS computation(a) |  | 2.0 |  |  | 2.3 |  |  | 5.0 |
(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 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://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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