v3.26.1
Pension and Other Postretirement Benefits (Tables)
 6 Months Ended
Jun. 30, 2026
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Costs
The following summarizes the components of net periodic benefit costs:
Three Months Ended 
June 30,		Six Months Ended 
June 30,
(Millions of dollars)2026202520262025
Pension Benefits
Service cost$62 $57 $124 $112 
Interest cost38 35 77 72 
Expected return on plan assets(39)(35)(78)(72)
Amortization of prior service credit(2)(2)(4)(4)
Amortization of actuarial loss5 4 9 8 
Settlement loss— 1 — 1 
Net periodic pension benefit cost$64 $60 $128 $117 
Other Benefits
Service cost$5 $5 $10 $10 
Interest cost9 8 17 17 
Amortization of prior service credit(6)(5)(11)(11)
Net periodic other benefit cost$8 $8 $16 $16