Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions |
Jun. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Intangible Assets [Abstract] | ||
| Gross Carrying Value | $ 14,630 | $ 14,855 |
| Accumulated Amortization | 11,278 | 11,087 |
| Net Carrying Value | 3,352 | 3,768 |
| Purchased credit card and affinity relationships | ||
| Intangible Assets [Abstract] | ||
| Gross Carrying Value | 6,905 | 7,006 |
| Accumulated Amortization | 6,167 | 6,111 |
| Net Carrying Value | 738 | 895 |
| Core deposit and other intangibles | ||
| Intangible Assets [Abstract] | ||
| Gross Carrying Value | 3,838 | 3,922 |
| Accumulated Amortization | 1,994 | 1,986 |
| Net Carrying Value | 1,844 | 1,936 |
| Customer relationships | ||
| Intangible Assets [Abstract] | ||
| Gross Carrying Value | 3,887 | 3,927 |
| Accumulated Amortization | 3,117 | 2,990 |
| Net Carrying Value | $ 770 | $ 937 |
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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