v3.25.2
Earnings Per Common Share - Reconciliation of Earnings Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Class of Stock [Line Items]        
Net income attributable to Corning Incorporated $ 469 $ 104 $ 626 $ 313
Weighted-average common shares outstanding - basic (in shares) 855 853 855 853
Stock options and other awards (in shares) 10 11 11 12
Weighted-average common shares outstanding - diluted (in shares) 865 864 866 865
Basic earnings per common share (in dollars per share) $ 0.55 $ 0.12 $ 0.73 $ 0.37
Diluted earnings per common share (in dollars per share) $ 0.54 $ 0.12 $ 0.72 $ 0.36
Stock Options and Other Awards        
Class of Stock [Line Items]        
Anti-dilutive potential shares excluded from diluted earnings per common share (in shares) 2 3 2 4