Receivables Held for Sale - Real Estate Secured Receivables (Details) - USD ($) $ in Millions		Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables held for sale	[1],[2]	$ 1,346	$ 5,674
Loans pledged as collateral		428	750
Mortgage loans in process of foreclosure		172	235
First lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables held for sale		1,302	4,699
Second lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables held for sale		$ 44	$ 975

[1] At June 30, 2017 and December 31, 2016, receivables held for sale includes $428 million and $750 million, respectively, 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 10, "Variable Interest Entities," for further discussion of our collateralized funding transactions.

[2] At June 30, 2017 and December 31, 2016, contractually delinquent real estate secured receivables held for sale includes $172 million and $235 million, respectively, that are in the process of foreclosure.