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Note 14 - Retirement Plans and Other Postretirement Benefits - Components of the Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Pension income     $ (64) $ (63)
Pension Plan [Member] | UNITED STATES        
Service cost $ 3 $ 3 9 8
Interest cost 24 12 56 36
Expected return on plan assets (45) (42) (133) (126)
Prior service credit 0 (2) (3) (5)
Actuarial loss 0 7 0 22
Net pension (income) expense before special termination benefits (18) (22) (71) (65)
Special termination benefits 1 0 1 0
Pension income (17) (22) (70) (65)
Pension Plan [Member] | Foreign Plan [Member]        
Service cost 0 1 2 3
Interest cost 2 2 6 4
Expected return on plan assets (3) (4) (10) (11)
Prior service credit 0 0 0 0
Actuarial loss 3 2 8 6
Net pension (income) expense before special termination benefits 2 1 6 2
Special termination benefits 0 0 0 0
Pension income $ 2 $ 1 $ 6 $ 2