Accounts Receivable and Loans (Details 6) - U S Card Services [Member] Account in Thousands, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2015 USD ($) Account M	Sep. 30, 2014 USD ($) Account M	Sep. 30, 2015 USD ($) Account M	Sep. 30, 2014 USD ($) Account
Financing Receivable, Modifications [Line Items]
Number of Accounts \| Account	13	15	40	46
Aggregated Outstanding Balance	$ 106	$ 124	$ 329	$ 390
Card Member Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Accounts \| Account	10	11	31	35
Aggregated Outstanding Balance	$ 69	$ 83	$ 218	$ 261
Average basis point reduction in interest rate by class of Card Member loans	9.00%	9.00%	10.00%	11.00%
Card Member Receivables [Member]
Financing Receivable, Modifications [Line Items]
Number of Accounts \| Account	3	4	9	11
Aggregated Outstanding Balance	$ 37	$ 41	$ 111	$ 129
Average payment term extension	12	12	12	12

The average basis point reduction in interest rate by class of cardmember loan.

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- Definition

The average period for payment term extension for cardmember receivables modified in a TDR.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524

+ Details

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- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

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- Details

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- Details

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