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Derivatives and Hedging Activities (Details 2) (Not Designated as Hedging Instrument [Member], USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Pretax gains (losses) | $ 2,000,000 | $ 26,000,000 | $ 88,000,000 | $ 109,000,000
Other Expense [Member] | Interest Rate Contract [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Pretax gains (losses) | 0 | 1,000,000 | 0 | 1,000,000
Other Expense [Member] | Foreign exchange contracts [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Pretax gains (losses) | 2,000,000 | 25,000,000 | 84,000,000 | 108,000,000
Cost Of Card Member Services [Member] | Foreign exchange contracts [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Pretax gains (losses) | $ 0 | $ 0 | $ 4,000,000 | $ 0

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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