Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net sales	$ 3,251	$ 3,243	$ 6,226	$ 6,421
Telecommunication Products [Member]
Net sales	1,113	1,066	2,043	2,191
Display Products [Member]
Net sales	704	725	1,336	1,334
Specialty Glass Products [Member]
Net sales	497	420	947	824
Environmental Substrate and Filter Products [Member]
Net sales	404	433	831	840
Life Science Products [Member]
Net sales	237	222	462	469
Polycrystalline Silicon [Member]
Net sales	199	258	415	535
Product and Service, Other [Member]
Net sales	$ 97	$ 119	$ 192	$ 228