Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Changes in benefit obligations and the fair value of plan assets for our pension and other postretirement benefit plans (Details)

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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Changes in benefit obligations and the fair value of plan assets for our pension and other postretirement benefit plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pension benefits      
Changes in benefit obligations      
Benefit obligation at January 1 $ 8,580 $ 9,414  
Service cost 93 97 $ 112
Interest cost 232 183 235
Participant Contributions 5 5  
Foreign currency exchange rate changes (152) (33)  
Amendments 9 0  
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 1,891 226  
Benefits Paid (500) (375)  
Defined Benefit Plan, Benefit Obligation, Divestiture (2) 0  
Settlements (26) (491)  
Curtailments (1) 0  
Special termination benefits 1 3 2
Other 28 3  
Benefit obligation at December 31 6,376 8,580 9,414
Defined Benefit Plan, Accumulated Benefit Obligation 6,307 8,431  
Fair value of plan assets      
Fair value of plan assets at January 1 8,905 8,639  
Actual return on plan assets (1,101) 1,003  
Employer contributions 33 33  
Contributions by Plan Participant 5 6  
Foreign currency exchange rate changes (258) (42)  
Benefits Paid (427) (315)  
Settlements (26) (421)  
Other 27 2  
Fair value of plan assets at December 31 7,158 8,905 8,639
Net liability recognized 782 325  
Pension benefits | Change in Assumptions for Defined Benefit Plans      
Changes in benefit obligations      
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) (1,231) (197)  
Other benefits      
Changes in benefit obligations      
Benefit obligation at January 1 696 769  
Service cost 7 9 11
Interest cost 17 15 21
Participant Contributions 11 13  
Foreign currency exchange rate changes (4) (1)  
Amendments 0 (13)  
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 175 28  
Benefits Paid (57) (67)  
Defined Benefit Plan, Benefit Obligation, Divestiture 0 0  
Settlements 0 0  
Curtailments 0 (1)  
Special termination benefits 0 0 0
Other 0 0  
Benefit obligation at December 31 495 696 769
Fair value of plan assets      
Fair value of plan assets at January 1 419 396  
Actual return on plan assets (55) 15  
Employer contributions 0 0  
Contributions by Plan Participant 9 8  
Foreign currency exchange rate changes 0 0  
Benefits Paid 0 0  
Settlements 0 0  
Other 0 0  
Fair value of plan assets at December 31 373 419 $ 396
Net liability recognized $ (122) $ (277)