ASSET RETIREMENT OBLIGATIONS (Tables)

9 Months Ended

Sep. 30, 2022

Asset Retirement Obligation [Abstract]

Summary Of Asset Retirement Obligations

The following is a summary of our asset retirement obligations:

	(In Millions)
	September 30, 2022		December 31, 2021
Asset retirement obligations1	$	522	$	449
Less: current portion	17		35
Long-term asset retirement obligations	$	505	$	414
1 Includes $279 million and $293 million related to our active operations as of September 30, 2022 and December 31, 2021, respectively.

Schedule of Change in Asset Retirement Obligation

The following is a roll forward of our asset retirement obligation liability:

	(In Millions)
	2022		2021
Asset retirement obligation as of January 1	$	449	$	342
Increase from acquisitions	—		57
Accretion expense	21		13
Reclassification from environmental obligations	63		—
Revision in estimated cash flows	22		—
Remediation payments	(33)		(20)
Asset retirement obligation as of September 30	$	522	$	392