Quarterly report pursuant to Section 13 or 15(d)

Securitization of Receivables - Additional Information (Details)

v3.19.2
Securitization of Receivables - Additional Information (Details)
6 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]      
Managed assets $ 5,500,000,000   $ 5,300,000,000
Securitization credit losses 0 $ 0  
Greater than 90 Days Past Due [Member]      
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]      
Payment from debtors to securitization trust 1,000,000    
Asset-backed Securities, Securitized Loans and Receivables [Member]      
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]      
Managed receivables $ 3,700,000,000   $ 3,300,000,000
Maximum [Member]      
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]      
Annual servicing fees 0.20%    
Maximum [Member] | Measurement Input, Discount Rate [Member]      
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]      
Discount rates to determine fair market value of underlying assets 0.07    
Minimum [Member] | Measurement Input, Discount Rate [Member]      
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]      
Discount rates to determine fair market value of underlying assets 0.04