Debt (Tables)

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Schedule of Debt

Our long-term total debt consisted of the following:

	December 31,
Millions of dollars	2025	2024
5.0% senior notes due November 2045	$1,887	$1,887
2.92% senior notes due March 2030	1,000	1,000
4.85% senior notes due November 2035	997	997
7.45% senior notes due September 2039	938	938
4.75% senior notes due August 2043	846	846
6.7% senior notes due September 2038	763	763
4.5% senior notes due November 2041	469	469
7.6% senior debentures due August 2096	226	226
6.75% senior notes due February 2027	90	90
Other	6	6
Unamortized debt issuance costs and discounts	(64)	(62)
Total long-term debt	$7,158	$7,160
Short-term borrowings and current maturities of long-term debt	—	381
Total debt	$7,158	$7,541

Schedule of Repurchase Agreements

Our total debt repurchases consisted of the following:

	December 31,
Millions of dollars	2025	2024
4.75% senior notes due August 2043	$—	$32
4.5% senior notes due November 2041	—	31
5.0% senior notes due November 2045	—	24
7.45% senior notes due September 2039	—	8
4.85% senior notes due November 2035	—	3
7.6% senior debentures due August 2096	—	2
Total Repurchases	$—	$100