Annual report pursuant to Section 13 and 15(d)

Note 19 - Employee Benefit Plans - Change in Benefit Obligation and Plan Assets (Details)

v3.20.4
Note 19 - Employee Benefit Plans - Change in Benefit Obligation and Plan Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Pension Plan [Member]          
Balance at beginning of period $ 2,800        
Balance at end of period 3,100 $ 2,800      
Funded status          
Defined Benefit Plan, Plan Assets, Amount, Ending Balance 2,800 2,800   $ 3,100 $ 2,800
UNITED STATES | Pension Plan [Member]          
Benefit obligation at beginning of year 1,024 956      
Service cost 21 20 $ 23    
Interest cost 37 41 39    
Participant contributions 0 0      
Plan amendments 0 0      
Foreign currency exchange rate changes 0 0      
Settlements/curtailments/divestitures (2) 20      
Actuarial (gain) loss 87 65      
Benefits paid (76) (78)      
Benefit obligation at end of year 1,091 1,024 956    
Balance at beginning of period 790 697      
Actual return on plan assets 99 107      
Foreign currency exchange rate changes 0 0      
Settlement/transfers/divestitures (1) 19      
Company contributions 54 45      
Benefits paid (76) (78)      
Balance at end of period 866 790 697    
Funded status          
Defined Benefit Plan, Plan Assets, Amount, Ending Balance 866 697 697 866 790
Benefit obligation 1,091 956 956 1,091 1,024
Accrued benefit cost       (225) (234)
Amounts recognized in balance sheet:          
Noncurrent asset       0 0
Current liability       (5) (5)
Noncurrent liability       (220) (229)
Total       (225) (234)
UNITED STATES | Other Postretirement Benefits Plan [Member]          
Benefit obligation at beginning of year 60 59      
Service cost 1 1 2    
Interest cost 2 3 2    
Participant contributions 2 2      
Plan amendments 0 0      
Foreign currency exchange rate changes 0 0      
Settlements/curtailments/divestitures 0 1      
Actuarial (gain) loss 9 0      
Benefits paid (9) (6)      
Benefit obligation at end of year 65 60 59    
Balance at beginning of period 0 0      
Actual return on plan assets 0 0      
Foreign currency exchange rate changes 0 0      
Settlement/transfers/divestitures 0 0      
Company contributions 7 4      
Benefits paid (9) (6)      
Balance at end of period 0 0 0    
Funded status          
Defined Benefit Plan, Plan Assets, Amount, Ending Balance 0 0 0 0 0
Benefit obligation 65 59 59 65 60
Accrued benefit cost       (65) (60)
Amounts recognized in balance sheet:          
Noncurrent asset       0 0
Current liability       (6) (5)
Noncurrent liability       (59) (55)
Total       (65) (60)
Foreign Plan [Member] | Pension Plan [Member]          
Benefit obligation at beginning of year 2,377 2,157      
Service cost 31 30 32    
Interest cost 25 37 37    
Participant contributions 6 6      
Plan amendments 0 (9)      
Foreign currency exchange rate changes 200 7      
Settlements/curtailments/divestitures (10) (2)      
Actuarial (gain) loss 116 224      
Benefits paid (74) (73)      
Benefit obligation at end of year 2,671 2,377 2,157    
Balance at beginning of period 1,960 1,751      
Actual return on plan assets 143 224      
Foreign currency exchange rate changes 161 11      
Settlement/transfers/divestitures (11) (2)      
Company contributions 40 43      
Benefits paid (74) (73)      
Balance at end of period 2,225 1,960 1,751    
Funded status          
Defined Benefit Plan, Plan Assets, Amount, Ending Balance 2,225 1,751 1,751 2,225 1,960
Benefit obligation 2,671 2,157 2,157 2,671 2,377
Accrued benefit cost       (446) (417)
Amounts recognized in balance sheet:          
Noncurrent asset       20 10
Current liability       (6) (6)
Noncurrent liability       (460) (421)
Total       (446) (417)
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]          
Benefit obligation at beginning of year 0 0      
Service cost 0 0 0    
Interest cost 0 0 0    
Participant contributions 0 0      
Plan amendments 0 0      
Foreign currency exchange rate changes 0 0      
Settlements/curtailments/divestitures 0 0      
Actuarial (gain) loss 0 0      
Benefits paid 0 0      
Benefit obligation at end of year 0 0 0    
Balance at beginning of period 0 0      
Actual return on plan assets 0 0      
Foreign currency exchange rate changes 0 0      
Settlement/transfers/divestitures 0 0      
Company contributions 0 0      
Benefits paid 0 0      
Balance at end of period 0 0 0    
Funded status          
Defined Benefit Plan, Plan Assets, Amount, Ending Balance 0 0 0 0 0
Benefit obligation $ 0 $ 0 $ 0 0 0
Accrued benefit cost       0 0
Amounts recognized in balance sheet:          
Noncurrent asset       0 0
Current liability       0 0
Noncurrent liability       0 0
Total       $ 0 $ 0