Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated Statements of Comprehensive Income [Abstract]
Net income (loss) attributable to Corning Incorporated		$ 1,066	$ (497)	$ 3,695
Foreign currency translation adjustments and other		(185)	746	(104)
Net unrealized (loss) gain on investments		(1)	14	(3)
Unamortized gains (losses) and prior service credits (costs) for postretirement benefit plans		19	30	241
Net unrealized (loss) gain on designated hedges		(1)	44	1
Other comprehensive (loss) income, net of tax (Note 15)	[1]	(168)	834	135
Comprehensive income attributable to Corning Incorporated		$ 898	$ 337	$ 3,830

[1] All amounts are after tax. Amounts in parentheses indicate debits to accumulated other comprehensive income.