Asset Retirement Obligation (Tables)

12 Months Ended

Dec. 31, 2023

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Asset Retirement Obligations [Table Text Block]

The following table presents amounts recognized related to asset retirement obligations for the periods indicated (in millions):

	2023		2022
Balance at January 1	$	757	$	606
Additional liabilities incurred	40		97
Liabilities assumed in acquisition	—		15
Liabilities settled	(14)		(29)
Accretion expense	31		30
Change in estimated cash flows	(35)		35
Other	(1)		3
Balance at December 31	$	778	$	757