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RELATED PARTY TRANSACTIONS - SIDF Loan Agreement (Details) ر.س in Millions, $ in Millions	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2022 USD ($)	Feb. 28, 2022 USD ($)	Feb. 28, 2022 SAR (ر.س)	Feb. 27, 2022 USD ($)	Feb. 27, 2022 SAR (ر.س)
Related Party Transaction [Line Items]
Principal amount	$ 2,279.3	$ 2,279.3
SIDF
Related Party Transaction [Line Items]
Principal amount			$ 1,400.0			$ 1,400.0	ر.س 5,190
SIDF | SIDF Loan Agreement | Related Party
Related Party Transaction [Line Items]
Principal amount				$ 1,400.0	ر.س 5,190

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