Note 2 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Net sales		$ 3,680	$ 3,290
Impact of foreign currency movements	[1]	64	(27)
Net sales of reportable segments and Hemlock and Emerging Growth Businesses		3,744	3,263
Telecommunication Products [Member]
Net sales		1,198	937
Display Products [Member]
Net sales		906	888
Specialty Glass Products [Member]
Net sales		493	451
Environmental Substrate and Filter Products [Member]
Net sales		401	442
Life Science Products [Member]
Net sales		307	301
Product and Service, Other [Member]
Net sales		$ 375	$ 271

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