Note 10 - Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating cash flows for operating leases	$ 20	$ 19	$ 21
Operating cash flow for finance leases	0	0	0
Financing cash flow for finance leases	1	1	1
Total	$ 21	$ 20	$ 22
Operating (Year)	5 years	5 years	5 years
Finance (Year)	3 years	3 years	2 years
Operating	13.22%	12.17%	11.91%
Finance	6.42%	5.18%	5.56%