Quarterly report pursuant to Section 13 or 15(d)

EMPLOYEE BENEFIT PLANS - Net Periodic Benefit Cost for Pension and Postretirement Benefit Plans (Details)

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EMPLOYEE BENEFIT PLANS - Net Periodic Benefit Cost for Pension and Postretirement Benefit Plans (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Defined Benefit Pension Plan | U.S. Pension Benefits    
Net Periodic Cost:    
Service cost $ 310 $ 293
Interest cost 644 627
Expected return on assets (771) (742)
Amortization of prior service cost 38 27
Net periodic benefit cost 221 205
Defined Benefit Pension Plan | International Pension Benefits    
Net Periodic Cost:    
Service cost 11 11
Interest cost 17 17
Expected return on assets (21) (21)
Amortization of prior service cost 0 0
Net periodic benefit cost 7 7
U.S. Postretirement Medical Benefits | U.S. Pension Benefits    
Net Periodic Cost:    
Service cost 5 5
Interest cost 27 29
Expected return on assets (1) (3)
Amortization of prior service cost 0 0
Net periodic benefit cost $ 31 $ 31