Note 20 - Other Post Retirement Benefit Cost from Continuing Operations (Details) - Other Postretirement Benefits Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Components of net postretirement benefit cost:
Interest cost	$ 1	$ 1	$ 2
Amortization of:
Actuarial gain			(1)
Net pension (income), expense	$ 1	$ 1	$ 1