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Note 11 - Retirement Plans and Other Postretirement Benefits - Components of the Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Pension income $ (36) $ (26)
Pension Plan [Member] | UNITED STATES    
Service cost 3 3
Interest cost 29 15
Expected return on plan assets (64) (44)
Prior service cost (credit) 2 (2)
Actuarial (gain) loss (7) 0
Pension income (37) (28)
Pension Plan [Member] | Foreign Plan [Member]    
Service cost 1 1
Interest cost 5 2
Expected return on plan assets (5) (4)
Prior service cost (credit) 0 0
Actuarial (gain) loss 0 3
Pension income $ 1 $ 2