Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS - CHANGE IN BENEFIT OBLIGATION AND PLAN ASSETS (Details)

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EMPLOYEE BENEFIT PLANS - CHANGE IN BENEFIT OBLIGATION AND PLAN ASSETS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Plans          
Change in plan assets          
Fair value of plan assets at beginning of year $ 2,400        
Fair value of plan assets at end of year 2,800 $ 2,400      
Funded status          
Fair value of plan assets 2,400 2,400   $ 2,800 $ 2,400
Defined Benefit Plans | United States          
Change in benefit obligation          
Benefit obligation at beginning of year 956 1,028      
Service cost 20 23 $ 22    
Interest cost 41 39 39    
Settlements/transfers/divestitures 20 (6)      
Actuarial (gain) loss 65 (67)      
Benefits paid (78) (61)      
Benefit obligation at end of year 1,024 956 1,028    
Change in plan assets          
Fair value of plan assets at beginning of year 697 747      
Actual return on plan assets 107 (27)      
Settlement/transfers/divestitures 19 (6)      
Company contributions 45 44      
Benefits paid (78) (61)      
Fair value of plan assets at end of year 790 697 747    
Funded status          
Fair value of plan assets 697 697 747 790 697
Benefit obligation 1,024 1,028 1,028 1,024 956
Accrued benefit cost       (234) (259)
Amounts recognized in balance sheet:          
Current liability       (5) (5)
Noncurrent liability       (229) (254)
Total       (234) (259)
Defined Benefit Plans | Non-U.S. Defined Benefit Plans          
Change in benefit obligation          
Benefit obligation at beginning of year 2,157 2,259      
Service cost 30 32 33    
Interest cost 37 37 35    
Participant contributions 6 5      
Plan amendments (9) 4      
Foreign currency exchange rate changes 7 (74)      
Settlements/transfers/divestitures (2) (3)      
Actuarial (gain) loss 224 (30)      
Benefits paid (73) (73)      
Benefit obligation at end of year 2,377 2,157 2,259    
Change in plan assets          
Fair value of plan assets at beginning of year 1,751 1,883      
Actual return on plan assets 224 (38)      
Foreign currency exchange rate changes 11 (62)      
Participant contributions 6 5      
Settlement/transfers/divestitures (2) (3)      
Company contributions 43 39      
Benefits paid (73) (73)      
Fair value of plan assets at end of year 1,960 1,751 1,883    
Funded status          
Fair value of plan assets 1,751 1,751 1,883 1,960 1,751
Benefit obligation 2,157 2,157 2,259 2,377 2,157
Accrued benefit cost       (417) (406)
Amounts recognized in balance sheet:          
Noncurrent asset       10 10
Current liability       (6) (6)
Noncurrent liability       (421) (410)
Total       (417) (406)
Other Postretirement Benefit Plans | United States          
Change in benefit obligation          
Benefit obligation at beginning of year 59 69      
Service cost 1 2 2    
Interest cost 3 2 3    
Participant contributions 2 2      
Settlements/transfers/divestitures 1        
Actuarial (gain) loss   (9)      
Benefits paid (6) (7)      
Benefit obligation at end of year 60 59 69    
Change in plan assets          
Participant contributions 2 2      
Company contributions 4 5      
Benefits paid (6) (7)      
Funded status          
Benefit obligation $ 60 $ 59 $ 69 60 59
Accrued benefit cost       (60) (59)
Amounts recognized in balance sheet:          
Current liability       (5) (5)
Noncurrent liability       (55) (54)
Total       $ (60) $ (59)