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Note 20 - Amounts Recognized in Consolidated Statement of Financial Position (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]    
Pension assets $ 262 $ 173
Pension and other postretirement liabilities (406) (378)
U.S. [Member]    
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]    
Pension assets 231 135
Net amount recognized 231 135
Non-US [Member]    
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]    
Pension assets 16 26
Pension and other postretirement liabilities (232) (199)
Net amount recognized $ (216) $ (173)