XML 59 R37.htm IDEA: XBRL DOCUMENT v3.25.2
ASSET RETIREMENT OBLIGATIONS (Tables)
 6 Months Ended
Jun. 30, 2025
Asset Retirement Obligation [Abstract]  
Summary of Asset Retirement Obligations
The following is a summary of our asset retirement obligations:
(In millions)June 30,
2025		December 31,
2024
Asset retirement obligations1
$534 $526 
Less: current portion21 25 
Long-term asset retirement obligations$513 $501 
1 Includes $308 million and $302 million related to our active operations as of June 30, 2025 and December 31, 2024, respectively.
Schedule of Change in Asset Retirement Obligation
The following is a roll-forward of our asset retirement obligations:
(In millions)20252024
Asset retirement obligations as of January 1$526 $459 
Accretion expense15 11 
Revision in estimated cash flows5 50 
Remediation payments(12)(14)
Asset retirement obligations as of June 30$534 $506 
During the first quarter of 2024, we announced the indefinite idle of our Weirton tinplate production plant, resulting in an increase to our asset retirement obligations as a result of acceleration of the timing and refinement in the cost required.
Schedule of Environmental Obligations
The following is a summary of our environmental obligations:
(In millions)June 30,
2025		December 31,
2024
Environmental obligations$112 $114 
Less: current portion12 14 
Long-term environmental obligations$100 $100