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EMPLOYEE BENEFIT PLANS (Tables)
3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures
Information about the net periodic benefit cost for our company-sponsored pension and postretirement benefit plans for the three months ended March 31, 2024 and 2023 is as follows (in millions):
 U.S. Pension BenefitsU.S. Postretirement
Medical Benefits
International
Pension Benefits
202420232024202320242023
Three Months Ended March 31:
Service cost$310 $293 $$$11 $11 
Interest cost644 627 27 29 17 17 
Expected return on assets(771)(742)(1)(3)(21)(21)
Amortization of prior service cost38 27 — — — — 
Net periodic benefit cost
$221 $205 $31 $31 $$