Receivables - Contractual Maturities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
2014	$ 197
2015	55
2016	99
2017	129
2018	145
Thereafter	25,959
Total	26,584
First Lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
2014	111
2015	42
2016	72
2017	99
2018	117
Thereafter	23,127
Total	23,568
Second Lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
2014	86
2015	13
2016	27
2017	30
2018	28
Thereafter	2,832
Total	$ 3,016