v3.25.2
Pension and Other Postretirement Benefits (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Other Postretirement Benefits        
Service cost $ 24 $ 19 $ 47 $ 37
Interest cost 66 62 131 125
Expected return on plan assets (4) (5) (8) (10)
Amortization of actuarial loss/(gain) (27) (26) (51) (52)
Amortization of prior service cost (16) (15) (31) (31)
Net benefit cost 43 35 88 69
U.S. | Pension Plan        
Service cost 138 117 274 230
Interest cost 171 168 341 336
Expected return on plan assets (149) (181) (298) (362)
Amortization of actuarial loss/(gain) 19 21 37 42
Amortization of prior service cost (8) (8) (15) (16)
Net pension enhancement and curtailment/settlement cost 15 14 51 17
Net benefit cost 186 131 390 247
Pension Benefits - Non-U.S. | Pension Plan        
Service cost 82 86 160 169
Interest cost 205 198 427 425
Expected return on plan assets (206) (230) (427) (491)
Amortization of actuarial loss/(gain) 9 24 18 49
Amortization of prior service cost 15 12 28 25
Net benefit cost $ 105 $ 90 $ 206 $ 177