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Note 4 - Earnings per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2023
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended |  |  | Six months ended |
|  | June 30, |  |  | June 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Net income attributable to Corning Incorporated |  | $ | 281 |  |  | $ | 563 |  |  | $ | 457 |  |  | $ | 1,144 |
Weighted-average common shares outstanding – basic |  |  | 848 |  |  |  | 843 |  |  |  | 846 |  |  |  | 843 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options and other awards |  |  | 11 |  |  |  | 13 |  |  |  | 13 |  |  |  | 14 |
Weighted-average common shares outstanding – diluted |  |  | 859 |  |  |  | 856 |  |  |  | 859 |  |  |  | 857 |
Basic earnings per common share |  | $ | 0.33 |  |  | $ | 0.67 |  |  | $ | 0.54 |  |  | $ | 1.36 |
Diluted earnings per common share |  | $ | 0.33 |  |  | $ | 0.66 |  |  | $ | 0.53 |  |  | $ | 1.33 |
Anti-dilutive potential shares excluded from diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options and other awards |  |  | 3 |  |  |  | 2 |  |  |  | 3 |  |  |  | 2 |

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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/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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