Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net income (loss) attributable to Corning Incorporated	$ 449	$ (71)	$ 1,048	$ (167)
Foreign currency translation adjustments and other	40	58	(323)	(207)
Unamortized losses and prior service costs for postretirement benefit plans	(1)	(12)	(1)	(12)
Net unrealized gains (losses) on designated hedges	1	19	12	(42)
Other comprehensive income (loss), net of tax (Note 14)	40	65	(312)	(261)
Comprehensive income (loss) attributable to Corning Incorporated	$ 489	$ (6)	$ 736	$ (428)