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ENVIRONMENTAL MATTERS AND ASSET RETIREMENT OBLIGATIONS (Tables)

3 Months Ended

Mar. 31, 2023

Accrual for Environmental Loss Contingencies Disclosure [Abstract]

Schedule of environmental liabilities, current and non-current

(Dollars in millions)			March 31, 2023						December 31, 2022
Environmental contingencies, current			$	15					$	10
Environmental contingencies, long-term			260						264
Total			$	275					$	274

Schedule of changes to environmental remediation liabilities

Changes in the reserves for environmental remediation liabilities during first three months 2023 and full year 2022 are summarized below:

(Dollars in millions)			Environmental Remediation Liabilities
Balance at December 31, 2021			$	253
Changes in estimates recognized in earnings and other			6
Cash reductions			(14)
Balance at December 31, 2022			245
Changes in estimates recognized in earnings and other			1
Cash reductions			(3)
Balance at March 31, 2023			$	243

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Roll Forward Of Environmental Remediation Liabilities [Table Text Block]

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Schedule Of Environmental Liabilities Balance Sheet Line Items [Table Text Block]

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