Quarterly report pursuant to Section 13 or 15(d)

Securitization of Receivables - Schedule of Fair Values of Retained Assets, Discount Rates Used in Valuing Assets (Parenthetical) (Detail)

v2.4.0.8
Securitization of Receivables - Schedule of Fair Values of Retained Assets, Discount Rates Used in Valuing Assets (Parenthetical) (Detail)
Sep. 30, 2014
Dec. 31, 2013
Servicing Assets at Fair Value [Line Items]    
Change in discount rate 5.00% 10.00%
Servicing [Member] | Scenario 1 [Member]
   
Servicing Assets at Fair Value [Line Items]    
Change in discount rate 5.00% 5.00%
Servicing [Member] | Scenario 2 [Member]
   
Servicing Assets at Fair Value [Line Items]    
Change in discount rate 10.00% 10.00%
Residual Assets [Member] | Scenario 1 [Member]
   
Servicing Assets at Fair Value [Line Items]    
Change in discount rate 5.00% 5.00%
Residual Assets [Member] | Scenario 2 [Member]
   
Servicing Assets at Fair Value [Line Items]    
Change in discount rate 10.00% 10.00%