Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 2) - Components of Net Periodic Pension Cost

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PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 2) - Components of Net Periodic Pension Cost - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
UNITED STATES      
Pension and other postretirement benefits      
Defined Benefit Plan, Accumulated Benefit Obligation $ 3,334 $ 3,138  
Plans with accumulated benefit obligation in excess of plan assets:      
ABO 1,067 1,044  
Plans with projected benefit obligation in excess of plan assets:      
PBO 1,116 1,078  
Components of Net Periodic Benefit Cost      
Service cost 117 137 $ 139
Interest cost 168 101 79
Expected return on plan assets (277) (229) (199)
Amortization of prior service cost 2 1 1
Recognized net actuarial loss (gain) 8 23 47
Defined Benefit Plan and OPEB, Net Periodic Benefit Cost (Credit), Total 18 33 67
Changes in benefit obligations and plan assets recognized in other comprehensive income      
Foreign currency translation adjustments 0 0  
UNITED KINGDOM      
Pension and other postretirement benefits      
Defined Benefit Plan, Accumulated Benefit Obligation 1,504 1,376  
Plans with accumulated benefit obligation in excess of plan assets:      
ABO 0 0  
Plans with projected benefit obligation in excess of plan assets:      
PBO 0 0  
Components of Net Periodic Benefit Cost      
Service cost 17 30 33
Interest cost 70 39 30
Expected return on plan assets (105) (87) (85)
Amortization of prior service cost 1 1 2
Recognized net actuarial loss (gain) 0 3 31
Defined Benefit Plan and OPEB, Net Periodic Benefit Cost (Credit), Total (17) (14) 11
Changes in benefit obligations and plan assets recognized in other comprehensive income      
Foreign currency translation adjustments 98 (258)  
Pension Plan      
Changes in benefit obligations and plan assets recognized in other comprehensive income      
Amortization of prior service cost (3) (2) (3)
Recognized actuarial (loss) gain (8) (26) (78)
Incurred prior service cost 1 3 0
Incurred actuarial loss (gain) 432 173 (368)
Foreign currency translation adjustments 0 0 5
Total recognized in other comprehensive loss (income) 422 148 (444)
Total recognized in net periodic pension cost and other comprehensive loss (income) 423 167 (366)
Other Postretirement Benefit Plan      
Components of Net Periodic Benefit Cost      
Interest cost 9 5 5
Recognized net actuarial loss (gain) (2) 0 0
Defined Benefit Plan and OPEB, Net Periodic Benefit Cost (Credit), Total 7 5 5
Changes in benefit obligations and plan assets recognized in other comprehensive income      
Recognized actuarial (loss) gain 2 0 0
Incurred actuarial loss (gain) (2) (25) (8)
Total recognized in other comprehensive loss (income) 0 (25) (8)
Total recognized in net periodic pension cost and other comprehensive loss (income) $ 7 $ (20) $ (3)