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Note 12 - Pension and Postretirement Benefit Plans - Aggregate Funding Levels of Defined Benefit Pension Plans (Details) - Pension Plan [Member] - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
UNITED STATES    
Plans with fair value of plan assets in excess of obligations:    
Accumulated benefit obligation $ 425 $ 568
Projected benefit obligation 425 568
Fair value of plan assets 431 582
Plans with obligations in excess of fair value of plan assets:    
Accumulated benefit obligation 132 177
Projected benefit obligation 132 177
Fair value of plan assets 106 151
Foreign Plan [Member]    
Plans with fair value of plan assets in excess of obligations:    
Accumulated benefit obligation 14 12
Projected benefit obligation 14 12
Fair value of plan assets 16 13
Plans with obligations in excess of fair value of plan assets:    
Accumulated benefit obligation 259 344
Projected benefit obligation 282 372
Fair value of plan assets $ 43 $ 52