Note 8 - Income Taxes - Income Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
U.S. companies	$ 1,254	$ (71)	$ 504
Non-U.S. companies	1,143	694	712
Income before income taxes	$ 2,397	$ 623	$ 1,216