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Business Segment Information - Reconciliation of Revenue and Net Income (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
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Mar. 31, 2014
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Mar. 31, 2013
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Dec. 31, 2013
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| Segment Reporting Information [Line Items] | ||||||||
| Segments' total revenue, net of interest expense (FTE basis) | $ 22,767 | [1] | $ 23,408 | [1] | ||||
| Revenues | 22,566 | [1] | 23,197 | [1] | ||||
| Reclassification to net income | (276) | [1] | 1,483 | [1] | ||||
| Total assets | 2,149,851 | [1] | 2,174,819 | [1] | 2,102,273 | [1] | ||
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Operating Segments [Member]
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| Segment Reporting Information [Line Items] | ||||||||
| Segments' total revenue, net of interest expense (FTE basis) | 22,461 | 22,955 | ||||||
| Reclassification to net income | (94) | 2,406 | ||||||
| Total assets | 1,991,630 | 1,938,689 | ||||||
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Asset and Liability Management Activities [Member]
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| Segment Reporting Information [Line Items] | ||||||||
| Revenues | 80 | (230) | ||||||
| Reclassification to net income | 311 | (457) | ||||||
| Total assets | 685,136 | 690,741 | ||||||
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Equity investment income [Member]
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| Segment Reporting Information [Line Items] | ||||||||
| Revenues | 674 | 520 | ||||||
| Reclassification to net income | 421 | 328 | ||||||
| Total assets | 2,118 | 4,858 | ||||||
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Liquidating businesses and other [Member]
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| Segment Reporting Information [Line Items] | ||||||||
| Revenues | (448) | 163 | ||||||
| Reclassification to net income | (914) | (794) | ||||||
| Total assets | 80,176 | 77,548 | ||||||
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Fully Taxable Equivalent Basis Adjustment [Member]
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| Segment Reporting Information [Line Items] | ||||||||
| Revenues | (201) | (211) | ||||||
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Intersegment Eliminations [Member]
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| Segment Reporting Information [Line Items] | ||||||||
| Total assets | $ (609,209) | $ (537,017) | ||||||
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