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Supplemental Cash Flow Information (Tables)
 9 Months Ended
Sep. 30, 2024
Supplemental Cash Flow Elements [Abstract]  
Summary of Supplemental Cash Flow Information
Nine Months Ended 
September 30,
(Millions of dollars)20242023
Net cash provided by operating activities included:
Interest paid (net of amounts capitalized)$959 $952 
Net income taxes paid to (received from) taxing authorities(a)
613 1,881 
(a)    2024 includes $439 million paid to third parties for transferable tax credits.
Reconciliation of Additions to Property, Plant and Equipment to Total Capital Expenditures
The consolidated statements of cash flows exclude changes to the consolidated balance sheets that did not affect cash. The following is a reconciliation of additions to property, plant and equipment to total capital expenditures:
Nine Months Ended 
September 30,
(Millions of dollars)20242023
Additions to property, plant and equipment per the consolidated statements of cash flows$1,723 $1,358 
Increase (decrease) in capital accruals(18)54 
Total capital expenditures$1,705 $1,412