Consolidated Statements of (Loss) Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Consolidated Statements of (Loss) Income [Abstract]
Net sales	$ 2,500	$ 2,375
Cost of sales	1,545	1,424
Gross margin	955	951
Operating expenses:
Selling, general and administrative expenses	501	319
Research, development and engineering expenses	241	202
Amortization of purchased intangibles	19	17
Operating income	194	413
Equity in earnings of affiliated companies	39	80
Interest income	13	12
Interest expense	(52)	(37)
Translated earnings contract loss, net	(622)	(438)
Other expense, net	(37)	(10)
(Loss) income before income taxes	(465)	20
(Provision) benefit for income taxes (Note 5)	(124)	66
Net (loss) income attributable to Corning Incorporated	$ (589)	$ 86
(Loss) earnings per common share attributable to Corning Incorporated:
Basic (Note 6)	$ (0.72)	$ 0.07
Diluted (Note 6)	(0.72)	0.07
Dividends declared per common share	$ 0.18	$ 0.155