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Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2024

Asset Retirement Obligation Disclosure [Abstract]

Asset retirement obligations

			Asset Retirement Obligations
(Dollars in millions)
Balance at December 31, 2023			$	556
Additional liabilities accrued			24
Revisions in estimated cash outflows			9
Disposition of assets			(7)
Accretion expense			22
Balance at September 30, 2024			$	604

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- References

No definition available.

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- Definition

Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481850/410-20-50-1

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