Note 14 - Hedging Activities - Summary of Effect of Designated Derivative Financial Instruments on Consolidated Financial Statements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Consolidated net sales	$ 14,189	$ 14,082	$ 11,303
Cost of sales	9,683	9,019	7,772
Gain (loss) recognized in other comprehensive income	52	47	(19)
Other expense, net	285	249	(74)
Net income attributable to Corning Incorporated	1,316	1,906	512
Foreign Exchange Contract [Member]
Gain (loss) recognized in other comprehensive income	52	47	(19)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Consolidated net sales	52	14
Cost of sales	32	39	13
Other expense, net	(3)	(1)	(14)
Net income attributable to Corning Incorporated	$ 81	$ 52	$ (7)