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Pension and Other Postretirement Benefits
 9 Months Ended
Sep. 30, 2025
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits
Note 6. Pension and Other Postretirement Benefits
 (millions of dollars)Three Months Ended
September 30,		Nine Months Ended
September 30,
2025202420252024
Components of net benefit cost  
Pension Benefits - U.S.  
Service cost121 135 395 365 
Interest cost170 168 511 504 
Expected return on plan assets(149)(181)(447)(543)
Amortization of actuarial loss/(gain) 18 20 55 62 
Amortization of prior service cost(8)(7)(23)(23)
Net pension enhancement and curtailment/settlement cost11 13 62 30 
Net benefit cost163 148 553 395 
Pension Benefits - Non-U.S.
Service cost83 85 243 254 
Interest cost208 203 635 628 
Expected return on plan assets(207)(235)(634)(726)
Amortization of actuarial loss/(gain)10 25 28 74 
Amortization of prior service cost15 12 43 37 
Net pension enhancement and curtailment/settlement cost31 — 31 — 
Net benefit cost140 90 346 267 
Other Postretirement Benefits
Service cost14 22 61 59 
Interest cost65 62 196 187 
Expected return on plan assets(4)(5)(12)(15)
Amortization of actuarial loss/(gain)(26)(26)(77)(78)
Amortization of prior service cost(15)(16)(46)(47)
Net benefit cost34 37 122 106