Note 3 - Restructuring of Operations - Accrued Restructuring Costs and Activity (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Balance	$ 2	$ 2
Charges to restructuring	3	4
Cash payments	(3)	(4)
Balance	2	2
Employee Termination Benefits [Member]
Balance	2	2
Charges to restructuring	2	2
Cash payments	(2)	(2)
Balance	2	2
Exit Costs [Member]
Balance	0	0
Charges to restructuring	1	2
Cash payments	(1)	(2)
Balance	$ 0	$ 0