Note 4 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net sales		$ 14,189	$ 14,082	$ 11,303
Telecommunication Products [Member]
Net sales		5,023	4,349	3,563
Display Products [Member]
Net sales		2,829	3,666	3,077
Specialty Glass Products [Member]
Net sales		1,996	2,008	1,884
Environmental Substrate and Filter Products [Member]
Net sales		1,492	1,584	1,333
Life Science Products [Member]
Net sales		1,187	1,232	981
Polycrystalline Silicon [Member]
Net sales		1,191	892	194
Product and Service, Other [Member]
Net sales	[1]	$ 471	$ 351	$ 271

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