Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 2)

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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 2) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets $ 8,080 $ 7,429 $ 8,866
Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 339 289 $ 288
Cash and cash equivalents | Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 741 483  
Cash and cash equivalents | Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 57 73  
Equity securities U.S.-based companies | Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 1,904 1,760  
Equity securities U.S.-based companies | Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 124 93  
Equity securities International-based companies | Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 1,387 1,121  
Equity securities International-based companies | Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 9 7  
Government bonds | Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 536 463  
Government bonds | Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 3 2  
Corporate bonds and debt securities | Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 964 835  
Corporate bonds and debt securities | Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 47 16  
Mutual, pooled and commingled funds | Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 898 875  
Mutual, pooled and commingled funds | Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 84 82  
Hedge funds/limited partnerships | Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 689 828  
Hedge funds/limited partnerships | Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 7 8  
Real estate | Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 342 391  
Real estate | Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 4 4  
Other | Pension benefits      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 619 673  
Other | Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets $ 4 4  
United States      
Defined Benefit Plan Disclosure      
Portion of projected pension benefit obligation represented by the defined benefit plan (as a percent) 61.00%    
Fair Value of Plan Assets $ 5,149 4,842  
United States | Cash and cash equivalents      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 364 310  
United States | Equity securities U.S.-based companies      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 1,231 1,116  
United States | Equity securities International-based companies      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 770 659  
United States | Government bonds      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 263 192  
United States | Corporate bonds and debt securities      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 899 745  
United States | Mutual, pooled and commingled funds      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 279 238  
United States | Hedge funds/limited partnerships      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 652 785  
United States | Real estate      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 337 385  
United States | Other      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 354 412  
Non-US [Member]      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 2,931 2,587  
Non-US [Member] | Cash and cash equivalents      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 377 173  
Non-US [Member] | Equity securities U.S.-based companies      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 673 644  
Non-US [Member] | Equity securities International-based companies      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 617 462  
Non-US [Member] | Government bonds      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 273 271  
Non-US [Member] | Corporate bonds and debt securities      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 65 90  
Non-US [Member] | Mutual, pooled and commingled funds      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 619 637  
Non-US [Member] | Hedge funds/limited partnerships      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 37 43  
Non-US [Member] | Real estate      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets 5 6  
Non-US [Member] | Other      
Defined Benefit Plan Disclosure      
Fair Value of Plan Assets $ 265 $ 261