Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net sales	$ 3,391	$ 3,173	$ 9,617	$ 9,594
Telecommunication Products [Member]
Net sales	1,246	918	3,289	3,109
Display Products [Member]
Net sales	707	727	2,043	2,061
Specialty Glass Products [Member]
Net sales	543	560	1,490	1,384
Environmental Substrate and Filter Products [Member]
Net sales	362	420	1,193	1,260
Life Science Products [Member]
Net sales	235	221	697	690
Polycrystalline Silicon [Member]
Net sales	194	230	609	765
Product and Service, Other [Member]
Net sales	$ 104	$ 97	$ 296	$ 325