FAIR VALUE - Assumptions used to Estimate Fair Value (Details) $ in Thousands	Jun. 30, 2026 USD ($)	Jun. 05, 2026 USD ($) shares $ / shares	Dec. 31, 2025 USD ($) yr
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liability \| $	$ 0	$ 150,215	$ 38,400
Probability of completing an initial public offering
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input			0.70
Probability of completing a merger and acquisition transaction
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input			0.30
Term (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input \| yr			0.5
Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input			0.65
Dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input			0
Risk-free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input			0.0359
Quantinuum Inc. Class A shares issued upon net exercise
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input \| shares		2,503,576
IPO share price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input \| $ / shares		60.00