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Asset Retirement Obligations (Details) - USD ($) $ in Millions | 3 Months Ended
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Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2022
Asset Retirement Obligation [Line Items] |  |  |
Unrecorded AROs | $ 126 |  |
Asset Retirement Obligation, Liabilities Settled |  | $ 3 |
Ince Facility |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Asset Retirement Obligation, Period Increase (Decrease) | $ 6 |  | $ 9

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- Definition The estimated amount of a liability for an asset retirement obligation which has not been recognized because fair value cannot be reasonably estimated. + References No definition available. + Details
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- Definition Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
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- Definition Amount of increase (decrease) in asset retirement obligations. + 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 + Details
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