Fair value by balance sheet grouping table (Tables)

9 Months Ended

Sep. 30, 2025

Fair Value Disclosures [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:

	September 30, 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	$7,166	$361	$7,527	$7,539	$4,503	$2,825	$7,328	$7,541