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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 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:
| Second Quarters |  | Six Months
| 2018 | 2017 |  | 2018 | 2017
Numerator (Dollars in millions): |  |  |  |  |
Net Earnings | $ | 877 |  | $ | 510 |  |  | $ | 1,572 |  | $ | 872 |
Denominator (Units in millions): |  |  |  |  |
Average Common Shares Outstanding | 864 |  | 920 |  |  | 875 |  | 923 |
Other Potentially Dilutive Common Shares | 4 |  | 4 |  |  | 3 |  | 3 |
Average Common Shares Outstanding, Assuming Dilution | 868 |  | 924 |  |  | 878 |  | 926 |
Net Earnings Per Share, Basic | $ | 1.02 |  | $ | 0.55 |  |  | $ | 1.80 |  | $ | 0.94 |
Net Earnings Per Share, Assuming Dilution | $ | 1.01 |  | $ | 0.55 |  |  | $ | 1.79 |  | $ | 0.94 |

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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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