Quarterly report [Sections 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, 2025
Mar. 31, 2024
Defined Benefit Pension Plan | U.S. Pension Benefits    
Net Periodic Cost:    
Service cost $ 281 $ 310
Interest cost 679 644
Expected return on assets (777) (771)
Amortization of prior service cost 39 38
Net periodic benefit cost 222 221
Defined Benefit Pension Plan | International Pension Benefits    
Net Periodic Cost:    
Service cost 9 11
Interest cost 16 17
Expected return on assets (20) (21)
Amortization of prior service cost 0 0
Net periodic benefit cost 5 7
U.S. Postretirement Medical Benefits | U.S. Pension Benefits    
Net Periodic Cost:    
Service cost 4 5
Interest cost 27 27
Expected return on assets (1) (1)
Amortization of prior service cost 0 0
Net periodic benefit cost $ 30 $ 31