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Accounts Receivable and Loans (Details 5) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accounts Receivable and Loans Textuals [Abstract]
Difference between pre- and post-modification outstanding balances	$ 0	$ 4
U S Card Services [Member]
Financing Receivable, Modifications [Line Items]
Number of Accounts	16,000	31,000
Aggregated Outstanding Balance	143	276
Card Member Loans [Member] | U S Card Services [Member]
Financing Receivable, Modifications [Line Items]
Number of Accounts	12,000	23,000
Aggregated Outstanding Balance	96	172
Average basis point reduction in interest rate by class of Card Member loans	14.00%	13.00%
Card Member Receivables [Member] | U S Card Services [Member]
Financing Receivable, Modifications [Line Items]
Number of Accounts	4,000	8,000
Aggregated Outstanding Balance	$ 47	$ 104
Average payment term extension	12	12

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- Definition

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

+ References

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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- Definition

Difference between pre-modification and post-modification amounts of investment in financing receivables modified by troubled debt restructurings.

+ 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=28368275&loc=SL6953676-111524

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- Definition

Post-modification amount of investment in financing receivables 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=28368275&loc=SL6953676-111524

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