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Earnings (Loss) Per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Basic and Diluted Earnings (Loss) Per Common Share | The following table presents the reconciliation of the amounts used to compute basic and diluted earnings (loss) per common share (in millions, except per share amounts):
| Three months ended September 30, |  | Nine months ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Net income (loss) attributable to Corning Incorporated | $ | 430 |  |  | $ | (117) |  |  | $ | 1,056 |  |  | $ | 196 |
Weighted-average common shares outstanding – basic | 856 |  |  | 854 |  |  | 855 |  |  | 853 |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock options and other awards | 12 |  |  |  |  |  | 15 |  |  | 15 |
Weighted-average common shares outstanding – diluted | 868 |  |  | 854 |  |  | 870 |  |  | 868 |
Basic earnings (loss) per common share | $ | 0.50 |  |  | $ | (0.14) |  |  | $ | 1.24 |  |  | $ | 0.23 |
Diluted earnings (loss) per common share | $ | 0.50 |  |  | $ | (0.14) |  |  | $ | 1.21 |  |  | $ | 0.23 |
Anti-dilutive potential shares excluded from diluted earnings (loss) per common share: |  |  |  |  |  |  |
Stock options and other awards | 1 |  |  | 18 |  |  | 1 |  |  |  |

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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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