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Net Interest and Other Financial Costs
 12 Months Ended
Dec. 31, 2024
Other Income and Expenses [Abstract]  
Net Interest and Other Financial Costs Net Interest and Other Financial Costs
Net interest and other financial costs were as follows:
(Millions of dollars)202420232022
Interest income$(376)$(530)$(191)
Interest expense1,365 1,325 1,299 
Interest capitalized(57)(60)(104)
Pension and other postretirement non-service costs(a)
(38)(89)3 
Loss on extinguishment of debt— 9 2 
Investments - net premium (discount) amortization(91)(142)(30)
Other financial costs36 12 21 
Net interest and other financial costs$839 $525 $1,000 
(a)    See Note 24.