Note 4 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Net sales		$ 3,290	$ 2,391
Impact of foreign currency movements (2)	[1]	(27)	33
Cumulative adjustment related to customer contract (3)	[2]		105
Net sales of reportable segments and All Other		3,263	2,529
Display Products [Member]
Net sales		888	633
Telecommunication Products [Member]
Net sales		937	791
Specialty Glass Products [Member]
Net sales		451	352
Environmental Substrate and Filter Products [Member]
Net sales		442	307
Life Science Products [Member]
Net sales		301	251
Product and Service, Other [Member]
Net sales		$ 271	$ 57

[1] This amount primarily represents the impact of foreign currency adjustments in the Display Technologies, Environmental Technologies and Life Sciences segments.

[2] Amount represents the negative impact of a cumulative adjustment to reduce revenue in the amount of $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 exited its production of LCD panels.