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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Computation of Basic Earnings Per Share, Assuming Dilution | The following table sets forth the computation of basic earnings per share and earnings per share, assuming dilution:
| Third Quarters |  | Nine Months
| 2018 | 2017 |  | 2018 | 2017
Numerator (Dollars in millions): |  |  |  |  |
Net Earnings | $ | 894 |  | $ | 459 |  |  | $ | 2,466 |  | $ | 1,331 |
Dividend Equivalents on Restricted Stock | — |  | — |  |  | — |  | (1 | )
Net Earnings, Attributable to Common Shareholders | $ | 894 |  | $ | 459 |  |  | $ | 2,466 |  | $ | 1,330 |
Denominator (Units in millions): |  |  |  |  |
Average Common Shares Outstanding | 850 |  | 902 |  |  | 866 |  | 916 |
Other Potentially Dilutive Common Shares | 4 |  | 4 |  |  | 4 |  | 3 |
Average Common Shares Outstanding, Assuming Dilution | 854 |  | 906 |  |  | 870 |  | 919 |
Net Earnings Per Share, Basic | $ | 1.05 |  | $ | 0.51 |  |  | $ | 2.85 |  | $ | 1.45 |
Net Earnings Per Share, Assuming Dilution | $ | 1.05 |  | $ | 0.51 |  |  | $ | 2.83 |  | $ | 1.45 |

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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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