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Fair Value Measurement (Additional Information) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Mar. 31, 2025
Dec. 31, 2024
Average value per unit as per Monte Carlo simulations     Prior to the Company’s IPO on August 8, 2025, the Company used a Monte Carlo simulation model and probability weighted valuations based on different scenarios including change of control, IPO and default scenarios to value the Warrants. The value per Warrant under the change of control scenario was the average value per unit under 50,000 Monte Carlo simulations, the value per Warrant under the IPO scenario was based on the number of common stock equivalent shares (including the Warrants) and total estimated equity value of the Company, and the value per Warrant under the default scenario was assumed to be zero.      
Recognized loss $ 39.5   $ 44.8      
Transfers between levels within the fair value hierarchy 5.3   $ 5.3      
IPO            
Common stock, outstanding common warrants exercised     1.0      
Majority Sponsor Top-Up            
Preferred stock value         $ 250.0  
Call Option derecognized     $ 0.2      
tranche obligations            
Fair value           $ 4.0
Common Warrant            
Fair value           1.2
Call Option            
Call Option derecognized     4.2      
Series J Warrant            
Fair value 5.3   5.3     $ 2.9
Fair value warrant liabilities $ 2.7 $ 0.4 $ 2.4 $ 0.5    
Series J Warrant | IPO            
Public offering price (in USD per share) $ 8.1475   $ 8.1475