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EMPLOYEE BENEFIT PLANS (Tables)
 3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Schedule of components net periodic cost
Employee benefit plans net periodic cost
Pension BenefitsOther Postretirement and Postemployment Benefits
(in millions)2024202320242023
Three Months Ended March 31,
Service cost$3 $— $23 $18 
Interest cost201 213 45 50 
Expected return on plan assets(263)(264)(1)— 
Amortization of prior service credit— — (1)(1)
Recognized net actuarial loss62 60 5 3 
Net periodic cost$3 $9 $71 $70