v3.25.2
RETIREMENT BENEFITS - Net (Benefit) Expense (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
U.S. plans | Pension plans        
Service-related expense        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost on benefit obligation 119 119 237 236
Expected return on assets (151) (152) (301) (303)
Amortization of unrecognized:        
Prior service cost (benefit) 1 1 1 1
Net actuarial loss (gain) 50 45 98 91
Settlement loss 0 0 0 0
Total net expense (benefit) 19 13 35 25
U.S. plans | Postretirement benefit plans        
Service-related expense        
Service cost 0 0 0 0
Interest cost on benefit obligation 3 4 7 8
Expected return on assets (2) (2) (5) (5)
Amortization of unrecognized:        
Prior service cost (benefit) (3) (3) (5) (5)
Net actuarial loss (gain) (3) (3) (6) (5)
Settlement loss 0 0 0 0
Total net expense (benefit) (5) (4) (9) (7)
Non-U.S. plans | Pension plans        
Service-related expense        
Service cost 28 30 54 59
Interest cost on benefit obligation 106 109 206 218
Expected return on assets (94) (82) (182) (169)
Amortization of unrecognized:        
Prior service cost (benefit) (1) (1) (2) (2)
Net actuarial loss (gain) 16 20 32 43
Settlement loss 0 2 0 2
Total net expense (benefit) 55 78 108 151
Non-U.S. plans | Postretirement benefit plans        
Service-related expense        
Service cost 0 1 0 1
Interest cost on benefit obligation 29 28 57 57
Expected return on assets (18) (20) (35) (42)
Amortization of unrecognized:        
Prior service cost (benefit) (1) (2) (3) (4)
Net actuarial loss (gain) 2 2 5 5
Settlement loss 0 0 0 0
Total net expense (benefit) $ 12 $ 9 $ 24 $ 17