Earnings Per Common Share - Reconciliation of Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Net income attributable to Corning Incorporated	$ 506	$ 581	$ 1,316
Weighted-average common shares outstanding - basic (in shares)	853	848	843
Stock options and other awards (in shares)	16	11	14
Weighted-average common shares outstanding - diluted (in shares)	869	859	857
Basic earnings per common share (in dollars per share)	$ 0.59	$ 0.69	$ 1.56
Diluted earnings per common share (in dollars per share)	$ 0.58	$ 0.68	$ 1.54
Anti-dilutive potential shares excluded from diluted earnings per common share (in shares)	0	2	1
Stock Options and Other Awards
Class of Stock [Line Items]
Anti-dilutive potential shares excluded from diluted earnings per common share (in shares)	0	2	1