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 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Defined Benefit Pension Plan | U.S. Pension Benefits        
Net Periodic Cost:        
Service cost $ 310 $ 293 $ 620 $ 586
Interest cost 644 627 1,288 1,254
Expected return on assets (772) (741) (1,543) (1,483)
Amortization of prior service cost 39 26 77 53
Net periodic benefit cost 221 205 442 410
Defined Benefit Pension Plan | International Pension Benefits        
Net Periodic Cost:        
Service cost 11 11 22 22
Interest cost 17 16 34 33
Expected return on assets (21) (21) (42) (42)
Amortization of prior service cost 0 0 0 0
Net periodic benefit cost 7 6 14 13
U.S. Postretirement Medical Benefits | U.S. Pension Benefits        
Net Periodic Cost:        
Service cost 5 5 10 10
Interest cost 27 29 54 58
Expected return on assets (1) (3) (2) (6)
Amortization of prior service cost 0 1 0 1
Net periodic benefit cost $ 31 $ 32 $ 62 $ 63