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, 2017		$ 2,300	$ 854	$ 14,089	$ 15,930	$ (16,633)	$ (842)	$ 15,698	$ 72	$ 15,770
Net (loss) income					(589)			(589)	3	(586)
Other comprehensive income (loss)							265	265		265
Purchase of common stock for treasury						(814)		(814)		(814)
Shares issued to benefit plans and for option exercises				30				30		30
Common Dividends					(153)			(153)		(153)
Preferred Dividends ($10,265 per share)					(24)			(24)		(24)
Other, net					2	(2)
Balance at Mar. 31, 2018		2,300	854	14,119	15,166	(17,449)	(577)	14,413	75	14,488
Balance at Dec. 31, 2017		2,300	854	14,089	15,930	(16,633)	(842)	15,698	72	15,770
Balance at Sep. 30, 2018		2,300	856	14,201	16,186	(18,517)	(1,136)	13,890	88	13,978
Balance at Mar. 31, 2018		2,300	854	14,119	15,166	(17,449)	(577)	14,413	75	14,488
Net (loss) income					738			738	6	744
Other comprehensive income (loss)							(458)	(458)	(1)	(459)
Purchase of common stock for treasury						(674)		(674)		(674)
Shares issued to benefit plans and for option exercises			1	39				40		40
Common Dividends					(146)			(146)		(146)
Preferred Dividends ($10,265 per share)					(25)			(25)		(25)
Other, net					(2)	(9)		(11)	(6)	(17)
Balance at Jun. 30, 2018		2,300	855	14,158	15,731	(18,132)	(1,035)	13,877	74	13,951
Net (loss) income					625			625	8	633
Other comprehensive income (loss)							(101)	(101)		(101)
Purchase of common stock for treasury						(384)		(384)		(384)
Shares issued to benefit plans and for option exercises			1	43				44		44
Common Dividends					(146)			(146)		(146)
Preferred Dividends ($10,265 per share)					(24)			(24)		(24)
Other, net						(1)		(1)	6	5
Balance at Sep. 30, 2018		2,300	856	14,201	16,186	(18,517)	(1,136)	13,890	88	13,978
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					(158)			(158)		(158)
Preferred Dividends ($10,265 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, 2018		2,300	857	14,212	16,303	(18,870)	(1,010)	13,792	94	13,886
Balance at Sep. 30, 2019		2,300	859	14,295	16,555	(19,588)	(1,387)	13,034	100	13,134
Balance at Mar. 31, 2019		2,300	857	14,243	16,489	(19,116)	(1,166)	13,607	99	13,706
Net (loss) income					92			92	13	105
Other comprehensive income (loss)							36	36		36
Purchase of common stock for treasury						(151)		(151)		(151)
Shares issued to benefit plans and for option exercises			1	34				35		35
Common Dividends					(157)			(157)		(157)
Preferred Dividends ($10,265 per share)					(25)			(25)		(25)
Other, net						(12)		(12)	(16)	(28)
Balance at Jun. 30, 2019		2,300	858	14,277	16,399	(19,279)	(1,130)	13,425	96	13,521
Net (loss) income					337			337	4	341
Other comprehensive income (loss)							(257)	(257)		(257)
Purchase of common stock for treasury						(308)		(308)		(308)
Shares issued to benefit plans and for option exercises			1	18				19		19
Common Dividends					(156)			(156)		(156)
Preferred Dividends ($10,265 per share)					(24)			(24)		(24)
Other, net					(1)	(1)		(2)		(2)
Balance at Sep. 30, 2019		$ 2,300	$ 859	$ 14,295	$ 16,555	$ (19,588)	$ (1,387)	$ 13,034	$ 100	$ 13,134

[1] Adjustments to retained earnings include the effect of Adjustments to 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 (“AOCI”) 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.