v3.26.1
Employee Benefits (Tables)
 3 Months Ended
Mar. 31, 2026
Retirement Benefits [Abstract]  
Schedule of Components of Net Periodic Benefit Cost
The components of net periodic benefit costs for 2026 and 2025 are as follows:
 Three Months Ended
March 31
 20262025
(Millions of dollars)
Pension Benefits
United States
Service cost$86 $90 
Interest cost122 124 
Expected return on plan assets(195)(174)
Amortization of prior service costs (credits) 1 1 
Amortization of actuarial losses (gains)27 30 
Total United States41 71 
International
Service cost16 14 
Interest cost60 48 
Expected return on plan assets(63)(47)
Amortization of prior service costs (credits)3 3 
Amortization of actuarial losses (gains)13 12 
Total International29 30 
Net Periodic Pension Benefit Costs$70 $101 
Other Benefits(*)
Service cost$7 $7 
Interest cost24 25 
Amortization of prior service costs (credits)(6)(6)
Amortization of actuarial losses (gains)(3)(4)
Net Periodic Other Benefit Costs$22 $22 
(*) Includes costs for U.S. and international OPEB plans. Obligations for plans outside the United States are not significant relative to the company’s total OPEB obligation.