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Debt (Tables)

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Schedule of Debt

Long-term debt at December 31 was:


			Millions of Dollars
			2023			2022
7.65% Debentures due 2023			—			78
2.125% Notes due 2024			461			900
3.35% Notes due 2024			265			426
2.4% Notes due 2025			366			900
8.2% Notes due 2025			134			134
3.35% Debentures due 2025			199			199
6.875% Debentures due 2026			67			67
7.8% Debentures due 2027			203			203
3.75% Notes due 2027			196			196
4.3% Notes due 2028			223			223
7.375% Debentures due 2029			92			92
7.0% Debentures due 2029			112			112
6.95% Notes due 2029			1,195			1,195
8.125% Notes due 2030			390			390
2.4% Notes due 2031			227			227
7.2% Notes due 2031			447			447
7.25% Notes due 2031			400			400
7.4% Notes due 2031			382			382
5.9% Notes due 2032			505			505
5.05% Notes due 2033			1,000			—
4.15% Notes due 2034			246			246
5.95% Notes due 2036			326			326
5.951% Notes serially maturing 2022 through 2037			603			631
5.9% Notes due 2038			350			350
6.5% Notes due 2039			1,588			1,588
3.758% Notes due 2042			785			785
4.3% Notes due 2044			750			750
5.95% Notes due 2046			329			329
7.9% Debentures due 2047			60			60
4.875% Notes due 2047			319			319
4.85% Notes due 2048			219			219
3.8% Notes due 2052			1,100			1,100
5.3% Notes due 2053			1,100			—
5.55% Notes due 2054			1,000			—
4.025% Notes due 2062			1,770			1,770
5.70% Notes due 2063			700			—

Marine Terminal Revenue Refunding Bonds due 2031 at 1.65% – 4.70% during 2023 and 0.07% – 4.10% during 2022			265			265
Industrial Development Bonds due 2035 at 1.85% – 4.70% during 2023 and 0.07% – 4.10% during 2022			18			18

Other			21			23
Debt at face value			18,413			15,855
Finance leases			1,129			1,320
Net unamortized premiums, discounts and debt issuance costs			(605)			(532)
Total debt			18,937			16,643
Short-term debt			(1,074)			(417)
Long-term debt			$	17,863		16,226