Note 20 - Amounts Recognized in Consolidated Statement of Financial Position (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]
Pension assets	$ 173	$ 82
Pension and other postretirement liabilities	(378)	(379)
U.S. [Member]
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]
Pension assets	135	40
Net amount recognized	135	40
Non-US [Member]
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]
Pension assets	26	32
Pension and other postretirement liabilities	(199)	(195)
Net amount recognized	$ (173)	$ (163)