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BALANCE SHEETS COMPONENTS - Schedule of Construction in Progress (Details) $ in Thousands, ر.س in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2026 USD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 SAR (ر.س)
Property, Plant, and Equipment [Line Items] |  |  |  |
Total construction in progress | $ 1,449,228 | $ 970,960 |  |
MISA | Government Grant | Related Party |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |
Related party transaction, amount of transaction |  |  | $ 97,500 | ر.س 366
Machinery and tooling |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |
Total construction in progress | 635,554 | 418,426 |  |
Asset under Construction |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |
Total construction in progress | 749,325 | 512,502 |  |
AMP-2 Construction In Progress Balance | MISA | Government Grant | Related Party |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |
Related party transaction, amount of transaction | 67,300 | 67,300 |  |
Leasehold improvements and other |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |
Total construction in progress | $ 64,349 | $ 40,032 |  |

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