Note 18 - Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current
U.S. federal and state	$ 14	$ 13	$ 14
Non-U.S.	79	92	128
Total current	93	105	142
Deferred
U.S. federal and state	(23)	(104)	(47)
Non-U.S.	(12)	(33)	(17)
Total deferred	(35)	(137)	(64)
Total expense (benefit)	$ 58	$ (32)	$ 78