XML 55 R40.htm IDEA: XBRL DOCUMENT v3.8.0.1
Accounts Receivable and Finance Receivables - Finance receivables by delinquency aging category (Details) - USD ($)
$ in Millions
Sep. 30, 2017
Dec. 31, 2016
Finance receivables held for investment by delinquency aging    
60 + days contractual delinquency as a percentage of finance receivables 6.04% 4.23%
Less than 31 days past due    
Finance receivables held for investment by delinquency aging    
Financing receivable held for investment $ 740 $ 857
31-60 days past due    
Finance receivables held for investment by delinquency aging    
Financing receivable held for investment 38 49
61- 90 days past due    
Finance receivables held for investment by delinquency aging    
Financing receivable held for investment 20 18
Over 90 days past due    
Finance receivables held for investment by delinquency aging    
Financing receivable held for investment $ 30 $ 22