v3.26.3
Financing Arrangements and Debt (Tables)
9 Months Ended
Sep. 30, 2026
Debt Disclosure [Abstract]  
Schedule of Long Term Debt
Long-term debt for the respective periods presented consisted of the following.
September 30,December 31,
(Thousands of dollars)20262025
Notes payable
5.875% notes, due December 2027
$— $78,899 
6.375% notes, due July 2028
— 148,590 
7.050% notes, due May 2029
117,582 117,582 
6.000% notes, due October 2032
600,000 600,000 
6.500% notes, due February 2034
500,000 — 
6.375% notes, due December 2042 ¹
339,761 339,761 
Total notes payable1,557,343 1,284,832 
Unamortized debt issuance cost and discount on notes payable(17,712)(12,406)
Total notes payable, net of unamortized discount1,539,631 1,272,426 
Finance lease obligations, due through October 2039 ²94,721 12,654 
Total debt including current maturities1,634,352 1,285,080 
Senior unsecured revolving credit facility— 100,000 
Current maturities (11,229)(2,514)
Total long-term debt$1,623,123 $1,382,566 
1 Coupon rate may fluctuate 25 basis points if rating is periodically downgraded or upgraded by S&P and Moody’s.
2 Includes finance lease liabilities of $83.9 million at September 30, 2026 for a floating storage and offloading vessel (FSO) in Vietnam. See Note Q - Leases for additional information.