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EMPLOYEE BENEFIT PLANS (Tables)
3 Months Ended
Mar. 31, 2022
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures Information about the net periodic benefit (income) cost for our company-sponsored pension and postretirement benefit plans for the three months ended March 31, 2022 and 2021 is as follows (in millions):
 U.S. Pension BenefitsU.S. Postretirement
Medical Benefits
International
Pension Benefits
202220212022202120222021
Three Months Ended March 31:
Service cost$506 $553 $$$18 $19 
Interest cost488 488 20 19 12 10 
Expected return on assets(820)(846)(1)(2)(20)(17)
Amortization of prior service cost23 33 — — — 
Actuarial (gain) loss— (3,290)— — — — 
Settlement and curtailment (gain) loss— — — — (33)— 
Net periodic benefit (income) cost$197 $(3,062)$27 $26 $(23)$12