Accrued and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2023

Accrued Liabilities, Current [Abstract]

Accrued and Other Current Liabilities [Table Text Block]

	December 31,
	2023		2022
	(Millions)
Interest on debt	$	322	$	274
Employee costs	197		218
Contract liabilities	159		141
Alaska refinery contamination litigation (Note 17)	134		21
Asset retirement obligations (Note 9)	106		87
Regulatory liabilities (Note 1)	77		201
Operating lease liabilities (Note 13)	24		25
Other, including accrued loss contingencies	265		303
	$	1,284	$	1,270