v3.25.2
EMPLOYEE BENEFIT PLANS - Net Periodic Benefit Cost for Pension and Postretirement Benefit Plans (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Defined Benefit Pension Plan | U.S. Pension Benefits        
Net Periodic Cost:        
Service cost $ 282 $ 310 $ 563 $ 620
Interest cost 680 644 1,359 1,288
Expected return on assets (778) (772) (1,555) (1,543)
Amortization of prior service cost 39 39 78 77
Net periodic benefit cost 223 221 445 442
Defined Benefit Pension Plan | International Pension Benefits        
Net Periodic Cost:        
Service cost 9 11 18 22
Interest cost 16 17 32 34
Expected return on assets (21) (21) (41) (42)
Amortization of prior service cost 1 0 1 0
Net periodic benefit cost 5 7 10 14
U.S. Postretirement Medical Benefits | U.S. Pension Benefits        
Net Periodic Cost:        
Service cost 4 5 8 10
Interest cost 27 27 54 54
Expected return on assets (2) (1) (3) (2)
Amortization of prior service cost 0 0 0 0
Net periodic benefit cost $ 29 $ 31 $ 59 $ 62