Note 17 - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Balance as of January 1	$ 8	$ 54	$ 57
Tax positions related to prior years:
Additions		2	1
Reductions	(1)	(42)	(1)
Settlements with taxing jurisdictions	(3)	(6)	(3)
Balance as of December 31	$ 4	$ 8	$ 54