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, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Net Periodic Cost:        
Settlement and curtailment (gain) loss       $ (33)
Defined Benefit Pension Plan | U.S. Pension Benefits        
Net Periodic Cost:        
Service cost $ 293 $ 506 $ 586 1,012
Interest cost 627 487 1,254 975
Expected return on assets (741) (820) (1,483) (1,640)
Amortization of prior service cost 26 23 53 46
Settlement and curtailment (gain) loss     0 0
Net periodic benefit cost (income) 205 196 410 393
Defined Benefit Pension Plan | International Pension Benefits        
Net Periodic Cost:        
Service cost 11 17 22 35
Interest cost 16 11 33 23
Expected return on assets (21) (20) (42) (40)
Amortization of prior service cost 0 1 0 1
Settlement and curtailment (gain) loss     0 (33)
Net periodic benefit cost (income) 6 9 13 (14)
U.S. Postretirement Medical Benefits | U.S. Pension Benefits        
Net Periodic Cost:        
Service cost 5 7 10 15
Interest cost 29 21 58 41
Expected return on assets (3) (1) (6) (2)
Amortization of prior service cost 1 0 1 0
Settlement and curtailment (gain) loss     0 0
Net periodic benefit cost (income) $ 32 $ 27 $ 63 $ 54