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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2017
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
| 2017 | 2016 |  | 2017 | 2016
Numerator (Dollars in millions): |  |  |  |  |
Net Earnings | $ | 459 |  | $ | 455 |  |  | $ | 1,331 |  | $ | 1,256 |
Dividend Equivalents on Restricted Stock | — |  | — |  |  | (1 | ) | (1 | )
Net Earnings, Attributable to Common Shareholders | $ | 459 |  | 455 |  |  | $ | 1,330 |  | 1,255 |
Denominator (Units in millions): |  |  |  |  |
Average Common Shares Outstanding | 902 |  | 942 |  |  | 916 |  | 952 |
Other Potentially Dilutive Common Shares | 4 |  | 1 |  |  | 3 |  | 1 |
Average Common Shares Outstanding, Assuming Dilution | 906 |  | 943 |  |  | 919 |  | 953 |
Net Earnings Per Share, Basic | $ | 0.51 |  | $ | 0.48 |  |  | $ | 1.45 |  | $ | 1.32 |
Net Earnings Per Share, Assuming Dilution | $ | 0.51 |  | $ | 0.48 |  |  | $ | 1.45 |  | $ | 1.32 |

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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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