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Earnings (Loss) Per Common Share | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Earnings (Loss) Per Common Share | 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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