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Related Party Transactions - Sales Outstanding Prepaid and Other Assets (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
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Related Party Transaction [Line Items] |  |
Due from ATTM for MGT deliveries | $ 112 | $ 184
Advanced Metal Industries Cluster and Toho Titanium Metal Co. Ltd (ATTM) | Receivable From MGT Product Sales | Related Party |  |
Related Party Transaction [Line Items] |  |
Due from ATTM for MGT deliveries | $ 5 | $ 14

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