Note 19 - Amounts Recognized in Consolidated Statement of Financial Position (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]
Pension assets	$ 82	$ 43
Pension and other postretirement liabilities	(379)	(462)
U.S. [Member]
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]
Pension assets	40
Pension and other postretirement liabilities		(62)
Net amount recognized	40	(62)
Non-US [Member]
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]
Pension assets	32	35
Pension and other postretirement liabilities	(195)	(198)
Net amount recognized	$ (163)	$ (163)