Goodwill and Intangible Assets - Intangible Assets (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Dec. 31, 2012
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Intangible Assets [Abstract] | ||||||||||
Gross Carrying Value | $ 17,370 | [1] | $ 17,370 | [1] | $ 17,512 | [1] | ||||
Accumulated Amortization | 11,527 | [1] | 11,527 | [1] | 10,828 | [1] | ||||
In Text Details [Abstract] | ||||||||||
Amortization of intangibles | 270 | 315 | 820 | 955 | ||||||
Future Amortization Expense, Remainder of 2013 | 270 | 270 | ||||||||
Future Amortization Expense, 2014 | 940 | 940 | ||||||||
Future Amortization Expense, 2015 | 840 | 840 | ||||||||
Future Amortization Expense, 2016 | 740 | 740 | ||||||||
Future Amortization Expense, 2017 | 650 | 650 | ||||||||
Future Amortization Expense, 2018 | 570 | 570 | ||||||||
Purchased credit card relationships [Member]
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Intangible Assets [Abstract] | ||||||||||
Gross Carrying Value | 6,137 | [1] | 6,137 | [1] | 6,184 | [1] | ||||
Accumulated Amortization | 4,735 | [1] | 4,735 | [1] | 4,494 | [1] | ||||
Core deposits intangibles [Member]
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Intangible Assets [Abstract] | ||||||||||
Gross Carrying Value | 3,592 | [1] | 3,592 | [1] | 3,592 | [1] | ||||
Accumulated Amortization | 3,009 | [1] | 3,009 | [1] | 2,858 | [1] | ||||
Customer relationships [Member]
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Intangible Assets [Abstract] | ||||||||||
Gross Carrying Value | 4,025 | [1] | 4,025 | [1] | 4,025 | [1] | ||||
Accumulated Amortization | 2,182 | [1] | 2,182 | [1] | 1,884 | [1] | ||||
Affinity relationships [Member]
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Intangible Assets [Abstract] | ||||||||||
Gross Carrying Value | 1,571 | [1] | 1,571 | [1] | 1,572 | [1] | ||||
Accumulated Amortization | 1,167 | [1] | 1,167 | [1] | 1,087 | [1] | ||||
Other intangibles [Member]
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Intangible Assets [Abstract] | ||||||||||
Gross Carrying Value | 2,045 | [1] | 2,045 | [1] | 2,139 | [1] | ||||
Accumulated Amortization | $ 434 | [1] | $ 434 | [1] | $ 505 | [1] | ||||
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