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FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurements (Details) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Investments held in Trust Account $ 558,149,739 $ 550,800,038 $ 523,038,352
Fair Value, Inputs, Level 1      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Investments held in Trust Account $ 558,149,739 $ 550,800,038 $ 523,038,352