Accounts Receivable and Loans (Details 6) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015 Account	Mar. 31, 2014 Account
Financing Receivable, Modifications [Line Items]
Number of Accounts	14,000	16,000
Aggregated Outstanding Balance	$ 120	$ 143
Card Member Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Accounts	11,000	12,000
Aggregated Outstanding Balance	80	96
Average basis point reduction in interest rate by class of Card Member loans	12.00%	14.00%
Card Member Receivables [Member]
Financing Receivable, Modifications [Line Items]
Number of Accounts	3,000	4,000
Aggregated Outstanding Balance	$ 40	$ 47
Average payment term extension	12	12

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

No definition available.

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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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- 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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Period Type:	duration

- Details

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Namespace Prefix:
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- Details

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