Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details)

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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Pension benefits      
Changes in benefit obligations      
Benefit obligation at January 1 $ 8,015 $ 9,469  
Service cost 104 124 $ 197
Interest cost 291 296 306
Participant Contributions 1 1  
Foreign currency exchange rate changes (28) (112)  
Amendments (1) 1  
Actuarial loss (gain) 931 (470)  
Benefits Paid (537) (358)  
Business Combinations 0 60  
Divestitures 0 (11)  
Settlements (19) (932)  
Curtailments (2) (63)  
Special termination benefits 1 7 106
Other 1 3  
Benefit obligation at December 31 8,757 8,015 9,469
Benefits Paid Pension Plan and Other Postretirement Plan Participants 84 71  
Accumulated Benefit Obligations 8,607 7,867  
Fair value of plan assets      
Fair value of plan assets at January 1 7,429 8,866  
Actual return on plan assets 1,111 (269)  
Employer contributions 36 107  
Contributions by Plan Participant 1 1  
Foreign currency exchange rate changes (26) (131)  
Benefits Paid (453) (287)  
Business Combinations 0 30  
Divestitures 0 (1)  
Settlements (18) (892)  
Other 0 5  
Fair value of plan assets at December 31 8,080 7,429 8,866
Net liability recognized (677) (586)  
Pension and other benefit amounts recognized in our consolidated balance sheets      
Noncurrent asset 998 813  
Current liability (72) (70)  
Long-term liability (1,603) (1,329)  
Net liability recognized (677) (586)  
Accumulated benefit obligations in excess of the fair value of plan assets      
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation 7,194 6,562  
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets 5,515 5,163  
Accumulated Benefit Obligations 7,052 6,451  
Fair value of plan assets 5,485 5,157  
Other benefits      
Changes in benefit obligations      
Benefit obligation at January 1 719 795  
Service cost 9 11 17
Interest cost 28 25 29
Participant Contributions 20 9  
Foreign currency exchange rate changes (2) (7)  
Amendments 0 (8)  
Actuarial loss (gain) 71 (35)  
Benefits Paid (86) (70)  
Business Combinations 0 1  
Divestitures 0 0  
Settlements 0 0  
Curtailments (2) 0  
Special termination benefits 0 0 0
Other 0 2  
Benefit obligation at December 31 757 719 795
Benefits Paid Pension Plan and Other Postretirement Plan Participants 83 67  
Fair value of plan assets      
Fair value of plan assets at January 1 289 288  
Actual return on plan assets 38 (5)  
Employer contributions 0 0  
Contributions by Plan Participant 15 9  
Foreign currency exchange rate changes 0 0  
Benefits Paid (3) (3)  
Business Combinations   0  
Divestitures 0 0  
Settlements 0 0  
Other 0 0  
Fair value of plan assets at December 31 339 289 $ 288
Net liability recognized (418) (430)  
Pension and other benefit amounts recognized in our consolidated balance sheets      
Noncurrent asset 0 0  
Current liability (21) (21)  
Long-term liability (397) (409)  
Net liability recognized $ (418) (430)  
United States      
Defined Benefit Plan Disclosure      
Portion of projected pension benefit obligation represented by the defined benefit plan (as a percent) 61.00%    
Defined Benefit Plan Portion of Projected Pension Plan Assets Percentage 61.00%    
Fair value of plan assets      
Fair value of plan assets at January 1 $ 4,842    
Fair value of plan assets at December 31 $ 5,149 $ 4,842