ASSET RETIREMENT OBLIGATIONS (Tables)

12 Months Ended

Dec. 31, 2023

Environmental Remediation Obligations [Abstract]

Schedule of Asset Retirement Obligations

The following is a summary of our asset retirement obligations:

	December 31,
(In millions)	2023		2022
Asset retirement obligations1	$	459	$	520
Less: current portion	15		21
Long-term asset retirement obligations	$	444	$	499
1 Includes $259 million and $277 million related to our active operations as of December 31, 2023 and 2022, respectively.

Roll-forward of Asset Retirement Obligation Liability

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

(In millions)	2023		2022
Asset retirement obligation as of January 1	$	520	$	449
Decrease from sale of business	(76)		—
Reclassification from environmental obligations	—		63
Accretion expense	26		26
Remediation payments	(21)		(40)
Revision in estimated cash flows	10		22
Asset retirement obligation as of December 31	$	459	$	520