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Note 5 - Earnings Per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2015
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
| Three months ended September 30, |  | Nine months ended September 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Net income attributable to Corning Incorporated | $ | 212 |  | $ | 1,014 |  | $ | 1,115 |  | $ | 1,484
Less: Series A convertible preferred stock dividend |  | 24 |  |  | 24 |  |  | 73 |  |  | 70
Net income available to common stockholders - basic |  | 188 |  |  | 990 |  |  | 1,042 |  |  | 1,414
Plus: Series A convertible preferred stock dividend (1) |  |  |  |  | 24 |  |  | 73 |  |  | 70
Net income available to common stockholders - diluted | $ | 188 |  | $ | 1,014 |  | $ | 1,115 |  | $ | 1,484
Weighted-average common shares outstanding - basic |  | 1,210 |  |  | 1,284 |  |  | 1,241 |  |  | 1,315
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |
Stock options and other dilutive securities |  | 8 |  |  | 12 |  |  | 10 |  |  | 12
Series A convertible preferred stock (1) |  |  |  |  | 115 |  |  | 115 |  |  | 109
Weighted-average common shares outstanding - diluted |  | 1,218 |  |  | 1,411 |  |  | 1,366 |  |  | 1,436
Basic earnings per common share | $ | 0.16 |  | $ | 0.77 |  | $ | 0.84 |  | $ | 1.08
Diluted earnings per common share | $ | 0.15 |  | $ | 0.72 |  | $ | 0.82 |  | $ | 1.03
Antidilutive potential shares excluded from diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Series A convertible preferred stock (1) |  | 115 |  |  |  |  |  |  |  |  |
Employee stock options and awards |  | 29 |  |  | 23 |  |  | 22 |  |  | 24
Accelerated share repurchase forward contract |  |  |  |  |  |  |  |  |  |  | 4
Total |  | 144 |  |  | 23 |  |  | 22 |  |  | 28

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- References No definition available. + Details
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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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