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Goodwill and Identifiable Intangible Assets and Liabilities - Schedule of Finite-Lived Intangible Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Schedule of Finite-Lived Intangible Liabilities [Line Items] |  |
Finite-lived intangible liabilities, net | $ 131 | $ 140
LTSA |  |
Schedule of Finite-Lived Intangible Liabilities [Line Items] |  |
Finite-lived intangible liabilities, net | 122 | 128
Fuel and transportation purchase contracts |  |
Schedule of Finite-Lived Intangible Liabilities [Line Items] |  |
Finite-lived intangible liabilities, net | 9 | 9
Other identifiable intangible liabilities |  |
Schedule of Finite-Lived Intangible Liabilities [Line Items] |  |
Finite-lived intangible liabilities, net | $ 0 | $ 3

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- Definition Amount after amortization of liabilities, excluding financial liabilities, lacking physical substance with a finite life. + References No definition available. + Details
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- Definition Schedule of Finite-Lived Intangible Liabilities [Line Items] + References No definition available. + Details
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