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Postretirement Benefits (Tables)
3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Schedule of net benefit costs
U.S. Pension
Benefits
Non-U.S. Pension
Benefits
Other
Postretirement
Benefits
March 31,March 31,March 31,
(Millions of dollars)202520242025202420252024
For the three months ended:
Components of net periodic benefit cost:
Service cost$— $— $11 $11 $16 $17 
Interest cost153 156 28 30 31 33 
Expected return on plan assets (180)(175)(40)(42)(2)(2)
Amortization of prior service cost (credit)— — — — (1)(3)
Net periodic benefit cost (benefit) 1
$(27)$(19)$(1)$(1)$44 $45 
1 The service cost component is included in Operating costs. All other components are included in Other income (expense).
Summary of company costs related to U.S. and non-U.S. defined contribution plans
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)20252024
U.S. Plans 1
$154 $223 
Non-U.S. Plans33 30 
 $187 $253 
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.