Note 20 - Amounts Recognized in Accumulated Other Comprehensive Loss For All Major Funded and Unfunded Defined Benefit Plans (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
U.S. [Member]
Amounts Recognized In Accumulated Other Comprehensive Loss For All Major Funded And Unfunded Defined Benefit Plans [Line Items]
Prior service credit	$ 20	$ 27
Net actuarial loss	(244)	(258)
Total	224	231
Non-US [Member]
Amounts Recognized In Accumulated Other Comprehensive Loss For All Major Funded And Unfunded Defined Benefit Plans [Line Items]
Prior service credit	3	3
Net actuarial loss	(151)	(126)
Total	$ 148	$ 123