Note 19 - Reportable Segments -Selected Financial Information On Product Lines and Reportable Segments (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net sales of reportable segments and All Other	[1]	$ 294	$ 272	$ 261
Net sales		14,189	14,082	11,303
Polycrystalline Silicon [Member]
Net sales		1,191	892	194
Operating Segments [Member]
Net sales of reportable segments and All Other	[1]	14,805	14,120	11,452
Impact of constant currency reporting not included in segment net income (loss)	[2]	(616)	(38)	(44)
Cumulative adjustment related to customer contract (2)	[3]			(105)
Net sales		14,189	14,082	11,303
Operating Segments [Member] | Optical Communications [Member]
Net sales of reportable segments and All Other		5,023	4,349	3,563
Operating Segments [Member] | Optical Communications [Member] | Carrier Network [Member]
Net sales of reportable segments and All Other		3,760	3,200	2,612
Operating Segments [Member] | Optical Communications [Member] | Enterprise Network [Member]
Net sales of reportable segments and All Other		1,263	1,149	951
Operating Segments [Member] | Display Technologies [Member]
Net sales of reportable segments and All Other		3,306	3,700	3,172
Operating Segments [Member] | Specialty Materials [Member]
Net sales of reportable segments and All Other		2,002	2,008	1,884
Operating Segments [Member] | Specialty Materials [Member] | Corning Gorilla Glass [Member]
Net sales of reportable segments and All Other		1,331	1,403	1,420
Operating Segments [Member] | Specialty Materials [Member] | Advanced Optics and Other Specially Glass [Member]
Net sales of reportable segments and All Other		671	605	464
Operating Segments [Member] | Environmental Technologies [Member]
Net sales of reportable segments and All Other		1,584	1,586	1,370
Operating Segments [Member] | Environmental Technologies [Member] | Automotive And Other [Member]
Net sales of reportable segments and All Other		934	936	883
Operating Segments [Member] | Environmental Technologies [Member] | Diesel [Member]
Net sales of reportable segments and All Other		650	650	487
Operating Segments [Member] | Life Science Products [Member]
Net sales of reportable segments and All Other		1,228	1,234	998
Operating Segments [Member] | Life Science Products [Member] | Labware [Member]
Net sales of reportable segments and All Other		657	671	552
Operating Segments [Member] | Life Science Products [Member] | Cell Culture Products [Member]
Net sales of reportable segments and All Other		571	563	446
Operating Segments [Member] | Hemlock and Emerging Growth Businesses [Member]
Net sales of reportable segments and All Other	[4],[5]	1,662	1,243	465
Operating Segments [Member] | Hemlock and Emerging Growth Businesses [Member] | Polycrystalline Silicon [Member]
Net sales of reportable segments and All Other		1,191	892	194
Operating Segments [Member] | Hemlock and Emerging Growth Businesses [Member] | Other [Member]
Net sales of reportable segments and All Other		471	351	271
Operating Segments [Member] | Reportable Segments [Member]
Net sales of reportable segments and All Other		$ 13,143	$ 12,877	$ 10,987

[1] Net sales are attributed to countries based on location of customer.

[2] This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.

[3] Amount represents the negative impact of a cumulative adjustment recorded during the first quarter of 2020 to reduce revenue in the amount of $105 million. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that is exiting its production of LCD panels.

[4] Corning obtained a controlling interest in HSG during the third quarter of 2020 and has consolidated results in Hemlock and Emerging Growth Businesses since September 9, 2020. Refer to Note 3 (HSG Transactions and Acquisitions) in the notes to the consolidated financial statements for additional information.

[5] Corning obtained a controlling interest in HSG during the third quarter of 2020 and has consolidated results in Hemlock and Emerging Growth Businesses since September 9, 2020. Refer to Note 3 (HSG Transactions and Acquisitions) in the notes to the consolidated financial statements for more information.