The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3337-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3461-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 230
-Section 55
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=34726456&loc=d3e60097-112785

Name:	us-gaap_ProceedsFromSaleOfLoansHeldForSale
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Business Events (Details Textuals) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
Business Events (Details Textuals) - USD ($) $ in Millions	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Business Events (Details) [Abstract]
CardMember loans transferred from HFS to held for investment	$ 245
CardMember receivables transferred from Held for Sales (HFS) to held for investment	1
Business Events (Line Items)
Gain on sale of held for sale (HFS) portfolio	1,091		$ 0	$ 1,218	$ 0
Other Expense [Member]
Business Events (Line Items)
Gain on sale of held for sale (HFS) portfolio	$ 1,091	$ 127