Financial Instruments and Risk Management (Tables)

12 Months Ended

Dec. 31, 2023

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, 2023								December 31, 2022
Millions of dollars	Level 1		Level 2		Total fair value		Carrying value		Level 1		Level 2		Total fair value		Carrying value
Total debt	$	7,419	$	378	$	7,797	$	7,636	$	6,539	$	917	$	7,456	$	7,928