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Quarterly Financial Data (Details Textuals) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Quarterly Financial Data (Textuals) [Abstract] | |||||||||||
| Earnings allocated to participating share awards | $ 11 | $ 12 | $ 13 | $ 11 | $ 7 | $ 14 | $ 14 | $ 14 | $ 47 | $ 49 | $ 58 |
| Restructuring charges, gross of revision adjustments | 400 | ||||||||||
| Restructuring charges, after-tax | 287 | ||||||||||
| Membership rewards expense | 342 | ||||||||||
| Membership rewards expense, after-tax | 212 | ||||||||||
| Statement [Line Items] | |||||||||||
| Card Member reimbursements | 153 | ||||||||||
| Card Member reimbursements, after-tax | 95 | ||||||||||
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Periods in the prior year [Member]
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| Statement [Line Items] | |||||||||||
| Card Member reimbursements | 49 | ||||||||||
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Periods prior to the prior year [Member]
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| Statement [Line Items] | |||||||||||
| Card Member reimbursements | $ 83 | ||||||||||