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, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2017
Dec. 31, 2016
Amounts recognized in balance sheet:          
Noncurrent asset       $ 22 $ 1
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 2,700 $ 2,400      
Funded status          
Fair value of plan assets 2,400 2,400   2,700 2,400
Defined Benefit Plans | United States          
Change in benefit obligation          
Benefit obligation at beginning of year 1,049 953      
Service cost 30 30 $ 32    
Interest cost 44 47 42    
Actuarial (gain) loss 91 73      
Benefits paid (61) (54)      
Benefit obligation at end of year 1,153 1,049 953    
Change in plan assets          
Fair value of plan assets at beginning of year 721 716      
Actual return on plan assets 104 53      
Company contributions 57 6      
Benefits paid (61) (54)      
Fair value of plan assets at end of year 821 721 716    
Funded status          
Fair value of plan assets 721 716 716 821 721
Benefit obligation 1,049 953 953 1,153 1,049
Accrued benefit cost       (332) (328)
Amounts recognized in balance sheet:          
Current liability       (10) (6)
Noncurrent liability       (322) (322)
Total       (332) (328)
Defined Benefit Plans | Non-U.S. Defined Benefit Plans          
Change in benefit obligation          
Benefit obligation at beginning of year 2,064 1,986      
Service cost 33 29 34    
Interest cost 35 41 45    
Participant contributions 5 5      
Plan amendments (1)        
Foreign currency exchange rate changes 207 (165)      
Special termination benefits 1        
Settlements/transfers/divestitures   (2)      
Curtailments   (1)      
Actuarial (gain) loss (10) 242      
Benefits paid (75) (71)      
Benefit obligation at end of year 2,259 2,064 1,986    
Change in plan assets          
Fair value of plan assets at beginning of year 1,639 1,637      
Actual return on plan assets 109 175      
Foreign currency exchange rate changes 166 (143)      
Participant contributions 5 5      
Company contributions 39 36      
Benefits paid (75) (71)      
Fair value of plan assets at end of year 1,883 1,639 1,637    
Funded status          
Fair value of plan assets 1,639 1,637 1,637 1,883 1,639
Benefit obligation 2,064 1,986 1,986 2,259 2,064
Accrued benefit cost       (376) (425)
Amounts recognized in balance sheet:          
Noncurrent asset       22 1
Current liability       (5) (5)
Noncurrent liability       (393) (421)
Total       (376) (425)
Other Postretirement Benefit Plans | United States          
Change in benefit obligation          
Benefit obligation at beginning of year 93 87      
Service cost 3 2 4    
Interest cost 3 4 5    
Participant contributions 2 3      
Actuarial (gain) loss (12) 8      
Benefits paid (9) (11)      
Benefit obligation at end of year 80 93 87    
Change in plan assets          
Participant contributions 2 3      
Company contributions 7 8      
Benefits paid (9) (11)      
Funded status          
Benefit obligation $ 93 $ 87 $ 87 80 93
Accrued benefit cost       (80) (93)
Amounts recognized in balance sheet:          
Current liability       (7) (8)
Noncurrent liability       (73) (85)
Total       $ (80) $ (93)