Note 5 - Revenue (Details Textual) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Revenue, Cumulative Adjustments	$ (105)		$ 105	[1]
Contract with Customer, Liability, Total		$ 1,300	1,400
Increase (Decrease) in Contract with Customer, Liability		216	140
Contract with Customer, Liability, Noncurrent		1,072	1,148
Contract with Customer, Liability, Current		223	211
Contract With Customer Liability, Deferred Revenue, Noncurrent		764	872
Contract With Customer Liability, Deferred Revenue, Current		148	152
HSG [Member]
Contract with Customer, Liability, Total		912	1,000
Contract With Customer Liability, Deferred Revenue, Noncurrent		764	872
Contract With Customer Liability, Deferred Revenue, Current		$ 148	$ 152
Maximum [Member]
Long Term Supply, Commitment Period (Year)		10 years

[1] 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.