v3.26.1
Fair Value of Financial Assets and Liabilities (Tables)
6 Months Ended
Jun. 30, 2026
Fair Value Disclosures [Abstract]  
Carrying Amount and Fair Value of Long-term Debt
June 30, 2026Dec. 31, 2025
(Millions of Dollars)Carrying AmountFair ValueCarrying AmountFair Value
Long-term debt, including current portion$1,896 $1,801 $1,647 $1,572