Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Consolidated Statements of Comprehensive Income [Abstract]
Net income attributable to Corning Incorporated	$ 625	$ 390	$ 774	$ 915
Foreign currency translation adjustments and other (Note 14)	(128)	53	(292)	457
Net unrealized (losses) gains on investments		(2)		14
Unamortized (losses) gains and prior service credits for postretirement benefit plans			(6)	17
Net unrealized gains on designated hedges	27	4	4	42
Other comprehensive (loss) income, net of tax	(101)	55	(294)	530
Comprehensive income attributable to Corning Incorporated	$ 524	$ 445	$ 480	$ 1,445