v3.26.1
Postretirement Benefits
 3 Months Ended
Mar. 31, 2026
Retirement Benefits [Abstract]  
Postretirement Benefits Postretirement benefits
 
A.  Pension and postretirement benefit costs
    
U.S. Pension
Benefits
Non-U.S. Pension
Benefits
Other
Postretirement
Benefits
March 31,March 31,March 31,
(Millions of dollars)202620252026202520262025
For the three months ended:
Components of net periodic benefit cost:
Service cost$— $— $12 $11 $14 $16 
Interest cost136 153 30 28 27 31 
Expected return on plan assets (176)(180)(44)(40)(3)(2)
Amortization of prior service cost (credit)— — — — — (1)
Net periodic benefit cost (benefit) 1
$(40)$(27)$(2)$(1)$38 $44 
1 The service cost component is included in Operating costs. All other components are included in Other income (expense).

We made $218 million of contributions to our pension and other postretirement plans during the three months ended March 31, 2026. We currently anticipate full-year 2026 contributions of approximately $360 million.
 
B.  Defined contribution benefit costs
 
Total company costs related to our defined contribution plans, which are included in Operating costs in the Consolidated Statement of Results of Operations, were as follows:
 
 Three Months Ended March 31,
(Millions of dollars)20262025
U.S. Plans 1
$190 $154 
Non-U.S. Plans37 33 
 $227 $187 
1 Includes costs related to our non-qualified deferred compensation plans. We utilize total return swaps to economically hedge this exposure to offset the related costs. See Note 5 for additional information.