v3.26.1
ENVIRONMENTAL MATTERS AND ASSET RETIREMENT OBLIGATIONS (Tables)
3 Months Ended
Mar. 31, 2026
Accrual for Environmental Loss Contingencies Disclosure [Abstract]  
Schedule of environmental liabilities, current and non-current
The Company's net environmental reserve for environmental contingencies, including remediation costs and asset retirement obligations, is included as part of "Other noncurrent assets", "Payables and other current liabilities", and "Other long-term liabilities" on the Unaudited Consolidated Statements of Financial Position as follows:
(Dollars in millions)March 31, 2026December 31, 2025
Environmental contingencies, current$25 $20 
Environmental contingencies, long-term290 298 
Total$315 $318 
Schedule of changes to environmental remediation liabilities
Changes in the reserves for environmental remediation liabilities during first three months 2026 and full year 2025 are summarized below:
(Dollars in millions)Environmental Remediation Liabilities
Balance at December 31, 2024
$252 
Changes in estimates recognized in earnings and other48 
Cash reductions(15)
Balance at December 31, 2025
285 
Changes in estimates recognized in earnings and other
Cash reductions(4)
Balance at March 31, 2026$282