Note 3 - Restructuring of Operations - Accrued Restructuring Costs and Activity (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Balance	$ 2	$ 2
Charges to restructuring	17	21
Cash payments	(3)	(7)
Balance	16	16
Employee Termination Benefits [Member]
Balance	2	2
Charges to restructuring	14	16
Cash payments		(2)
Balance	16	16
Exit Costs [Member]
Balance	0	0
Charges to restructuring	3	5
Cash payments	(3)	(5)
Balance	$ 0	$ 0