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Note 6 - Earnings Per Common Share | 6 Months Ended
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Jun. 30, 2016
Notes to Financial Statements |
Earnings Per Share [Text Block] | 6. Earnings per Common Share The following table sets forth the computation of basic and diluted earnings per common share (in millions, except per share amounts):
| Three months ended June 30, |  | Six months ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Net income attributable to Corning Incorporated | $ | 2,207 |  | $ | 496 |  | $ | 1,839 |  | $ | 903
Less: Series A convertible preferred stock dividend |  | 24 |  |  | 24 |  |  | 49 |  |  | 49
Net income available to common stockholders - basic |  | 2,183 |  |  | 472 |  |  | 1,790 |  |  | 854
Plus: Series A convertible preferred stock dividend |  | 24 |  |  | 24 |  |  | 49 |  |  | 49
Net income available to common stockholders - diluted | $ | 2,207 |  | $ | 496 |  | $ | 1,839 |  | $ | 903
Weighted-average common shares outstanding - basic |  | 1,059 |  |  | 1,246 |  |  | 1,081 |  |  | 1,257
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |
Stock options and other dilutive securities |  | 8 |  |  | 10 |  |  | 8 |  |  | 11
Series A convertible preferred stock |  | 115 |  |  | 115 |  |  | 115 |  |  | 115
Weighted-average common shares outstanding - diluted |  | 1,182 |  |  | 1,371 |  |  | 1,204 |  |  | 1,383
Basic earnings per common share | $ | 2.06 |  | $ | 0.38 |  | $ | 1.66 |  | $ | 0.68
Diluted earnings per common share | $ | 1.87 |  | $ | 0.36 |  | $ | 1.53 |  | $ | 0.65
Antidilutive potential shares excluded from diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Employee stock options and awards |  | 20 |  |  | 20 |  |  | 21 |  |  | 17
Total |  | 20 |  |  | 20 |  |  | 21 |  |  | 17

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