Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS - FAIR VALUE OF PLAN ASSETS (Details)

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EMPLOYEE BENEFIT PLANS - FAIR VALUE OF PLAN ASSETS (Details) - Defined Benefit Plans - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets $ 2,700 $ 2,700     $ 2,500 $ 2,700
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 2,700          
Fair value of plan assets at end of year $ 2,500 2,700        
Minimum            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Expected long term rate of return on the pension assets (as a percent) 5.68%          
Maximum            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Expected long term rate of return on the pension assets (as a percent) 7.55%          
United States            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets $ 821 721 $ 721   $ 767 $ 821
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 821 721        
Fair value of plan assets at end of year $ 767 $ 821 $ 721      
Expected long term rate of return on the pension assets (as a percent) 7.55% 7.55% 7.54%      
Allocation (as a percent)         100.00% 100.00%
United States | Forecast            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Target allocation (as a percent)       100.00%    
United States | Quoted prices in active markets for identical assets (Level 1)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets $ 557 $ 557     $ 515 $ 557
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 557          
Fair value of plan assets at end of year 515 557        
United States | Significant other observable inputs (Level 2)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 194 194     178 194
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 194          
Fair value of plan assets at end of year 178 194        
United States | Significant unobservable inputs (Level 3)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 70 70     74 70
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 70          
Fair value of plan assets at end of year 74 70        
United States | Recurring basis            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 821 821     767 821
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 821          
Fair value of plan assets at end of year 767 821        
Non-U.S. Defined Benefit Plans            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 1,883 1,639 $ 1,639   $ 1,751 $ 1,883
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 1,883 1,639        
Fair value of plan assets at end of year $ 1,751 $ 1,883 $ 1,639      
Expected long term rate of return on the pension assets (as a percent) 5.88% 5.68% 5.91%      
Allocation (as a percent)         100.00% 100.00%
Non-U.S. Defined Benefit Plans | Forecast            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Target allocation (as a percent)       100.00%    
Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets $ 844 $ 844     $ 786 $ 844
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 844          
Fair value of plan assets at end of year 786 844        
Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 984 984     909 984
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 984          
Fair value of plan assets at end of year 909 984        
Non-U.S. Defined Benefit Plans | Significant unobservable inputs (Level 3)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 55 55     56 55
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 55          
Fair value of plan assets at end of year 56 55        
Non-U.S. Defined Benefit Plans | Recurring basis            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 1,883 1,883     $ 1,751 $ 1,883
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 1,883          
Fair value of plan assets at end of year 1,751 1,883        
Investments in equity securities | United States            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Allocation (as a percent)         50.00% 54.00%
Investments in equity securities | United States | Forecast            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Target allocation (as a percent)       53.00%    
Investments in equity securities | United States | Quoted prices in active markets for identical assets (Level 1)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 318 318     $ 275 $ 318
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 318          
Fair value of plan assets at end of year 275 318        
Investments in equity securities | United States | Significant other observable inputs (Level 2)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 122 122     107 122
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 122          
Fair value of plan assets at end of year 107 122        
Investments in equity securities | United States | Recurring basis            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 440 440     $ 382 $ 440
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 440          
Fair value of plan assets at end of year 382 440        
Investments in equity securities | Non-U.S. Defined Benefit Plans            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Allocation (as a percent)         27.00% 32.00%
Investments in equity securities | Non-U.S. Defined Benefit Plans | Forecast            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Target allocation (as a percent)       37.00%    
Investments in equity securities | Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 230 230     $ 161 $ 230
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 230          
Fair value of plan assets at end of year 161 230        
Investments in equity securities | Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 372 372     310 372
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 372          
Fair value of plan assets at end of year 310 372        
Investments in equity securities | Non-U.S. Defined Benefit Plans | Recurring basis            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 602 602     $ 471 $ 602
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 602          
Fair value of plan assets at end of year 471 602        
Fixed income | United States            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Allocation (as a percent)         41.00% 38.00%
Fixed income | United States | Forecast            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Target allocation (as a percent)       39.00%    
Fixed income | United States | Quoted prices in active markets for identical assets (Level 1)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 239 239     $ 240 $ 239
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 239          
Fair value of plan assets at end of year 240 239        
Fixed income | United States | Significant other observable inputs (Level 2)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 72 72     71 72
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 72          
Fair value of plan assets at end of year 71 72        
Fixed income | United States | Recurring basis            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 311 311     $ 311 $ 311
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 311          
Fair value of plan assets at end of year 311 311        
Fixed income | Non-U.S. Defined Benefit Plans            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Allocation (as a percent)         43.00% 39.00%
Fixed income | Non-U.S. Defined Benefit Plans | Forecast            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Target allocation (as a percent)       41.00%    
Fixed income | Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 477 477     $ 496 $ 477
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 477          
Fair value of plan assets at end of year 496 477        
Fixed income | Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 262 262     251 262
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 262          
Fair value of plan assets at end of year 251 262        
Fixed income | Non-U.S. Defined Benefit Plans | Recurring basis            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 739 739     747 739
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 739          
Fair value of plan assets at end of year 747 739        
Real Estate/Other | Significant unobservable inputs (Level 3)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 125 106 $ 106   $ 130 $ 125
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 125 106        
Return on pension plan assets 5 14        
Purchases, sales and settlements   5        
Fair value of plan assets at end of year 130 125 $ 106      
Real Estate/Other | United States            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Allocation (as a percent)         9.00% 8.00%
Real Estate/Other | United States | Forecast            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Target allocation (as a percent)       8.00%    
Real Estate/Other | United States | Significant unobservable inputs (Level 3)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 70 70     $ 74 $ 70
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 70          
Fair value of plan assets at end of year 74 70        
Real Estate/Other | United States | Recurring basis            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 70 70     $ 74 $ 70
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 70          
Fair value of plan assets at end of year 74 70        
Real Estate/Other | Non-U.S. Defined Benefit Plans            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Allocation (as a percent)         28.00% 27.00%
Real Estate/Other | Non-U.S. Defined Benefit Plans | Forecast            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Target allocation (as a percent)       13.00%    
Real Estate/Other | Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 104 104     $ 93 $ 104
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 104          
Fair value of plan assets at end of year 93 104        
Real Estate/Other | Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 349 349     348 349
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 349          
Fair value of plan assets at end of year 348 349        
Real Estate/Other | Non-U.S. Defined Benefit Plans | Significant unobservable inputs (Level 3)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 55 55     56 55
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 55          
Fair value of plan assets at end of year 56 55        
Real Estate/Other | Non-U.S. Defined Benefit Plans | Recurring basis            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 508 508     $ 497 $ 508
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 508          
Fair value of plan assets at end of year 497 508        
Cash | Non-U.S. Defined Benefit Plans            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Allocation (as a percent)         2.00% 2.00%
Cash | Non-U.S. Defined Benefit Plans | Forecast            
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Target allocation (as a percent)       9.00%    
Cash | Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 33 33     $ 36 $ 33
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 33          
Fair value of plan assets at end of year 36 33        
Cash | Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 1 1       1
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 1          
Fair value of plan assets at end of year   1        
Cash | Non-U.S. Defined Benefit Plans | Recurring basis            
EMPLOYEE BENEFIT PLANS            
Fair value of plan assets 34 34     $ 36 $ 34
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)            
Fair value of plan assets at beginning of year 34          
Fair value of plan assets at end of year $ 36 $ 34