Financial Instruments and Risk Management (Tables)

12 Months Ended

Dec. 31, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The carrying amount and fair value of our total debt is as follows:

	December 31, 2025				December 31, 2024
Millions of dollars	Level 1	Level 2	Total fair value	Carrying value	Level 1	Level 2	Total fair value	Carrying value
Total debt	$6,722	$357	$7,079	$7,158	$4,503	$2,825	$7,328	$7,541