Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income attributable to Corning Incorporated	$ 92	$ 738	$ 591	$ 149
Foreign currency translation adjustments and other	38	(428)	(72)	(164)
Net unrealized gains (losses) on investments	1	(1)	2
Unamortized losses and prior service credits for postretirement benefit plans		(6)	(52)	(5)
Net unrealized (losses) gains on designated hedges	(3)	(23)	2	(24)
Other comprehensive income (loss), net of tax (Note 12)	36	(458)	(120)	(193)
Comprehensive income (loss) attributable to Corning	$ 128	$ 280	$ 471	$ (44)