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Note 20 - Retirement Plans - Amounts Recognized in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
UNITED STATES    
Prior service credit $ (25) $ 6
Net actuarial gain (loss) 594 445
Total 569 451
Foreign Plan [Member]    
Prior service credit 2 2
Net actuarial gain (loss) (43) (177)
Total $ (41) $ (175)