Note 4 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Net sales		$ 3,615	$ 3,001		$ 10,406	$ 7,953
Impact of foreign currency movements	[1]	24	6			66
Cumulative adjustment related to customer contract				$ (105)		105	[2]
Net sales of reportable segments and All Other		3,639	3,007		10,406	8,124
Display Products [Member]
Net sales		936	834		2,758	2,211
Telecommunication Products [Member]
Net sales		1,131	909		3,143	2,587
Specialty Glass Products [Member]
Net sales		556	570		1,490	1,339
Environmental Substrate and Filter Products [Member]
Net sales		382	369		1,233	891
Life Science Products [Member]
Net sales		304	220		917	707
Product and Service, Other [Member]
Net sales	[3]	$ 306	$ 99		$ 865	$ 218

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

[2] Amount represents the negative impact of a cumulative adjustment to reduce revenue by $105 million recorded during the first quarter of 2020. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that substantially exited its production of LCD panels.

[3] The Company obtained a controlling interest in HSG during the third quarter of 2020 and has consolidated results in "All Other" as of September 9, 2020.