Note 18 - Income Tax Provision (Benefit) Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Amount computed using the statutory rate	$ (79)	$ (13)
Increase (reduction) in taxes resulting from:
Unremitted foreign earnings	2	(1)
Operations outside the U.S.	3	22
Legislative tax law and rate changes	(11)	1
Valuation allowance	220	11
Tax settlements and adjustments, including interest	(43)	2
Embedded derivative liability	81	9
Other, net	(5)
Total provision	$ 168	$ 31