Note 20 - Other Postretirement Benefits - Schedule Of Changes In Projected Benefit Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest cost	$ 1	$ 2	$ 1
Other Postretirement Benefits Plan [Member]
Net benefit obligation at beginning of period	43	43
Interest cost	1	2
Actuarial loss	1	0
Benefit payments	(2)	(2)
Net benefit obligation at end of period	43	43	$ 43
Underfunded status at end of period	$ (43)	$ (43)