Quarterly report pursuant to Section 13 or 15(d)

VIEs - Narrative (Details)

v3.5.0.2
VIEs - Narrative (Details)
$ in Billions
3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
Dec. 31, 2012
USD ($)
Mar. 31, 2012
USD ($)
Sep. 30, 2011
USD ($)
Jun. 30, 2015
trust
Variable Interest Entity [Line Items]          
Number of securitization trusts acquired | trust         2
Total of automobile loans transferred in securitization transactions | $ $ 0.8 $ 1.0 $ 1.3 $ 1.0