v3.25.2
POSTRETIREMENT BENEFIT PLANS - Components of Expense (Income) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Defined Benefit Plan Disclosure [Line Items]        
Non-operating $ (73) $ (101) $ (148) $ (204)
Pension Plans | U.S. Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost – Operating 1 8 2 16
Interest cost 249 242 497 484
Expected return on plan assets (287) (299) (573) (597)
Amortization of net loss (gain) (20) (17) (40) (34)
Amortization of prior service cost (credit) (3) 2 (5) 4
Special termination cost 1 0 2 0
Non-operating (59) (72) (119) (143)
Net periodic expense (income) (58) (64) (117) (127)
Pension Plans | International Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost – Operating 5 5 10 10
Interest cost 38 35 74 70
Expected return on plan assets (38) (48) (74) (96)
Amortization of net loss (gain) 5 3 10 6
Amortization of prior service cost (credit) (1) 0 (1) 0
Special termination cost 0 0 0 0
Non-operating 4 (10) 9 (20)
Net periodic expense (income) 10 (5) 19 (10)
Other Postretirement Benefits Plan        
Defined Benefit Plan Disclosure [Line Items]        
Service cost – Operating 1 2 3 4
Interest cost 13 14 26 27
Expected return on plan assets 0 0 0 0
Amortization of net loss (gain) (15) (15) (30) (30)
Amortization of prior service cost (credit) (20) (22) (40) (44)
Special termination cost 0 0 1 0
Non-operating (21) (23) (43) (47)
Net periodic expense (income) $ (20) $ (21) $ (40) $ (43)