Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Details)

v3.20.2
Fair Value Measurements - Additional Information (Details) - Level 3
Sep. 30, 2020
Dec. 31, 2019
Measurement Input, Interest Rate | Minimum    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Investments, measurement input 0.01  
Measurement Input, Interest Rate | Maximum    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Investments, measurement input   0.05
Measurement input, discount rate    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Investments, measurement input 0.030 0.044
Securitization residual assets | Measurement Input, Interest Rate | Minimum    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Investments, measurement input 0.01  
Securitization residual assets | Measurement Input, Interest Rate | Maximum    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Investments, measurement input   0.05
Securitization residual assets | Measurement input, discount rate    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Investments, measurement input 0.040 0.044