Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2023

Asset Retirement Obligation Disclosure [Abstract]

Activity Related to Asset Retirement Obligations

Activity related to the Company’s asset retirement obligations is as follows:

	Year Ended December 31,
(In millions)	2023		2022		2021
Balance at beginning of period	$	277	$	263	$	86
Liabilities assumed in Merger	—		—		175
Liabilities incurred	6		10		6
Liabilities settled	(1)		(3)		(10)
Liabilities divested	(4)		(2)		—
Accretion expense	11		9		6
Balance at end of period	289		277		$	263
Less: current asset retirement obligation	(9)		(6)		(4)
Noncurrent asset retirement obligation	$	280	$	271	$	259