Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Millions		Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital Common [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Total Corning Incorporated Shareholders' Equity [Member]	Non-controlling Interests [Member]	Total
Balance at Dec. 31, 2018		$ 2,300	$ 857	$ 14,212	$ 16,303	$ (18,870)	$ (1,010)	$ 13,792	$ 94	$ 13,886
Net (loss) income					499			499	6	505
Other comprehensive income (loss)							(156)	(156)		(156)
Purchase of common stock for treasury						(244)		(244)		(244)
Shares issued to benefit plans and for option exercises				31				31		31
Common Dividends ($0.22 per share)					(158)			(158)		(158)
Preferred Dividends ($10,625 per share)					(24)			(24)		(24)
Other, net	[1]				(131)	(2)		(133)	(1)	(134)
Balance at Mar. 31, 2019		2,300	857	14,243	16,489	(19,116)	(1,166)	13,607	99	13,706
Balance at Dec. 31, 2019		2,300	859	14,323	16,408	(19,812)	(1,171)	12,907	90	12,997
Net (loss) income					(96)			(96)		(96)
Other comprehensive income (loss)							(326)	(326)	(1)	(327)
Purchase of common stock for treasury						(105)		(105)		(105)
Shares issued to benefit plans and for option exercises				17				17		17
Common Dividends ($0.22 per share)					(168)			(168)		(168)
Preferred Dividends ($10,625 per share)					(24)			(24)		(24)
Other, net					(6)	(1)		(7)		(7)
Balance at Mar. 31, 2020		$ 2,300	$ 859	$ 14,340	$ 16,114	$ (19,918)	$ (1,497)	$ 12,198	$ 89	$ 12,287

[1] Adjustments to beginning retained earnings include the effect of the accounting change we recorded upon adoption of the new standard for reclassification of stranded tax effects in accumulated other comprehensive income in the amount of $53 million, and a $(186) million, net of tax, effect from an equity affiliate’s adoption of the new revenue standard.