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Note 14 - Component of the Net Periodic benefit Cost - (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]        
Total net pension (income) expense     $ (63) $ (65)
Defined Benefit Plans [Member] | U.S. [Member]        
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]        
Service cost $ 3 $ 2 8 8
Interest cost 12 21 36 64
Expected return on plan assets (42) (48) (126) (146)
Prior service credit (2) (2) (5) (5)
Actuarial loss 7 4 22 11
Net pension (income) expense before special termination benefits (22) (23) (65) (68)
Special termination benefits   1   2
Net pension (income) expense from major plans (22) (22) (65) (66)
Total net pension (income) expense (22) (22) (65) (66)
Defined Benefit Plans [Member] | Non-US [Member]        
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]        
Service cost 1 1 3 3
Interest cost 2 2 4 6
Expected return on plan assets (4) (5) (11) (14)
Actuarial loss 2 $ 2 6 5
Net pension (income) expense before special termination benefits 1   2  
Net pension (income) expense from major plans 1   2  
Other plans       1
Total net pension (income) expense $ 1   $ 2 $ 1