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Related Party Transactions - Schedule of MGT Loan Interest Expense (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Related Party Transaction [Line Items] |  |  |
Interest expense | $ 189 | $ 167 | $ 158
Cristal | MGT Loan | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Interest expense | 1 | 1 | 2
Loan Repayment via MGT delivered to ATTM | $ 6 | $ 6 | $ 6

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