Note 20 - Major Funded and Unfunded Defined Benefit Plans With Accumulated Benefit Obligation in Excess of Plan Assets (Details) - Non-US [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Major Funded And Unfunded Defined Benefit Plans With Accumulated Benefit Obligation In Excess Of Plan Assets [Line Items]
Accumulated benefit obligation	$ 609	$ 559
Fair value of plan assets	$ 386	$ 368