Note 4 - Restructuring of Operations - Accrued Restructuring Costs and Activity (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Balance	$ 25	$ 30
Charges to restructuring	3	4
Adjustments of accruals	(3)	(3)
Cash payments	(5)	(10)
Currency impact		(1)
Balance	20	20
Employee Termination Benefits [Member]
Balance	25	30
Adjustments of accruals	(3)	(3)
Cash payments	(2)	(6)
Currency impact		(1)
Balance	20	20
Exit Costs [Member]
Charges to restructuring	3	4
Cash payments	$ (3)	$ (4)