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Note 20 - Retirement Plans - Components of the Pension Obligation (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Service cost $ 0 $ 0 $ 0
Interest cost 1 1 1
UNITED STATES      
Over (under) funded status at end of period 1,177 973  
UNITED STATES | Pension Plan [Member]      
Net benefit obligation at beginning of period 3,132 3,476  
Service cost 13 11 11
Interest cost 80 47 86
Benefit payments (294) (318)  
Plan Amendments 28 0  
Actuarial (gain) loss (479) (86)  
Special termination benefits 2 2  
Currency adjustments 0 0  
Net benefit obligation at end of period 2,482 3,132 3,476
Fair value of plan assets at beginning of period 4,105 3,707  
Actual Return on plan assets (152) 716  
Employer contributions 0 0  
Benefit payments (294) (318)  
Currency adjustments 0 0  
Fair value of plan assets at end of period 3,659 4,105 3,707
Over (under) funded status at end of period 1,177 973  
Accumulated benefit obligation at end of period 2,482 3,130  
Foreign Plan [Member]      
Over (under) funded status at end of period (51) (190)  
Foreign Plan [Member] | Pension Plan [Member]      
Net benefit obligation at beginning of period 816 912  
Service cost 3 3 3
Interest cost 9 5 9
Benefit payments (44) (48)  
Plan Amendments 0 0  
Actuarial (gain) loss (165) 21  
Special termination benefits 0 0  
Currency adjustments (42) (77)  
Net benefit obligation at end of period 577 816 912
Fair value of plan assets at beginning of period 626 696  
Actual Return on plan assets (31) 32  
Employer contributions 5 7  
Benefit payments (44) (48)  
Currency adjustments (30) (61)  
Fair value of plan assets at end of period 526 626 $ 696
Over (under) funded status at end of period (51) (190)  
Accumulated benefit obligation at end of period $ 568 $ 800