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Goodwill and Intangible Assets - Amortization Expense (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||||||||||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Finite-Lived Intangible Assets [Line Items] | ||||||||||||
| Amortization of intangibles | $ 235 | [1] | $ 274 | [1] | $ 474 | [2] | $ 550 | [2] | ||||
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Purchased credit card and Affinity relationships [Member]
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| Finite-Lived Intangible Assets [Line Items] | ||||||||||||
| Amortization of intangibles | 102 | 118 | 207 | 237 | ||||||||
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Core Deposits [Member]
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| Finite-Lived Intangible Assets [Line Items] | ||||||||||||
| Amortization of intangibles | 36 | 50 | 72 | 125 | ||||||||
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Customer Relationships [Member]
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| Finite-Lived Intangible Assets [Line Items] | ||||||||||||
| Amortization of intangibles | 91 | 95 | 182 | 165 | ||||||||
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Other Intangible Assets [Member]
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| Finite-Lived Intangible Assets [Line Items] | ||||||||||||
| Amortization of intangibles | $ 6 | $ 11 | $ 13 | $ 23 | ||||||||
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