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Note 19 - Major Funded and Unfunded Defined Benefit Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
U.S. [Member]      
Change in Benefit Obligation      
Actuarial (gain) loss $ (549)    
Change in Plan Assets      
Over (under) funded status at end of period 973 $ 231  
Non-US [Member]      
Change in Plan Assets      
Over (under) funded status at end of period (190) (216)  
Defined Benefit Plans [Member] | U.S. [Member]      
Change in Benefit Obligation      
Projected benefit obligation at beginning of period 3,476 3,475  
Service cost 11 11 $ 10
Interest cost 47 86 122
Benefit payments (318) (277)  
Actuarial (gain) loss (86) 299  
Settlements   (121)  
Special termination benefits 2 3  
Projected benefit obligation at end of period 3,132 3,476 3,475
Change in Plan Assets      
Fair value of plan assets at beginning of period 3,707 3,610  
Gain on plan assets 716 495  
Benefit payments (318) (277)  
Settlements   (121)  
Fair value of plan assets at end of period 4,105 3,707 3,610
Over (under) funded status at end of period 973 231  
Accumulated benefit obligation at end of period 3,130 3,473  
Defined Benefit Plans [Member] | Non-US [Member]      
Change in Benefit Obligation      
Projected benefit obligation at beginning of period 912 834  
Service cost 3 3 3
Interest cost 5 9 13
Benefit payments (48) (47)  
Actuarial (gain) loss 21 39  
Currency adjustments (77) 74  
Projected benefit obligation at end of period 816 912 834
Change in Plan Assets      
Fair value of plan assets at beginning of period 696 661  
Gain on plan assets 32 20  
Employer contributions 7 7  
Benefit payments (48) (47)  
Currency adjustments (61) 55  
Fair value of plan assets at end of period 626 696 $ 661
Over (under) funded status at end of period (190) (216)  
Accumulated benefit obligation at end of period $ 800 $ 903