Note 2 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Net sales		$ 2,975	$ 3,178
Telecommunication Products [Member]
Net sales		930	1,125
Display Products [Member]
Net sales		632	609
Specialty Glass Products [Member]
Net sales		450	404
Environmental Substrate and Filter Products [Member]
Net sales		427	407
Life Science Products [Member]
Net sales		225	247
Polycrystalline Silicon [Member]
Net sales		216	277
Product and Service, Other [Member]
Net sales	[1]	$ 95	$ 109

[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.