v3.26.1
COMMITMENTS AND CONTINGENCIES (Details)
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Entity Information [Line Items]    
Designated Amount for loans (less than), through February 2027 $ 100,000  
Minimum fee, 2026 1,200,000  
Minimum fee, 2027 100,000  
Minimum net liquidity $ 15,000,000.0  
Fee deposits, percentage 0.05  
Fee deposits refund obligation, issued $ 16,300,000 $ 4,600,000
Fee deposits refunds 17,200,000 9,200,000
Purchase commitment of borrower loans 32,100,000  
Maximum potential future payments 3,800,000,000  
Accrued repurchase and indemnification obligation 300,000 300,000
Prosper Funding LLC    
Entity Information [Line Items]    
Designated Amount for loans (less than), through February 2027 100,000  
Minimum fee, 2026 1,200,000  
Minimum fee, 2027 100,000  
Minimum net liquidity $ 15,000,000.0  
Fee deposits, percentage 0.05  
Fee deposits refund obligation, issued $ 16,300,000 4,600,000
Fee deposits refunds 17,200,000 9,200,000
Purchase commitment of borrower loans 32,100,000  
Maximum potential future payments 3,800,000,000  
Accrued repurchase and indemnification obligation $ 300,000 $ 300,000