Receivables Held for Sale - Real Estate Secured Receivables (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables held for sale	[1],[2]	$ 5,674	$ 8,265
Loans pledged as collateral		750	1,654
First lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables held for sale		4,699	8,110
Second lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables held for sale		$ 975	$ 155

[1] At December 31, 2016, receivables held for sale includes $750 million of closed-end real estate secured receivables which are part of a collateralized funding transaction. These receivables will be sold when they are contractually released as collateral under the public trust and become available for sale. See Note 17, "Variable Interest Entities," for further discussion of our collateralized funding transactions.

[2] The receivable balances included in this table reflect the principal amount outstanding on the loan net of any charge-off recorded in accordance with our existing charge-off policies but exclude any basis adjustments to the loan such as unearned income, unamortized deferred fees and costs on originated loans, purchase accounting fair value adjustments and premiums or discounts on purchased receivables. Additionally, the balances in this table related to receivables which have been classified as held for sale have been reduced by the lower of amortized cost or fair value adjustment recorded as well as the credit loss reserves associated with these receivables prior to the transfer.