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Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of AOCI (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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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Gains on sales of debt securities | $ 377 | $ 68 | ||||
| Other-than-temporary impairment | (1) | (14) | ||||
| Net interest income | 10,085 | 10,664 | ||||
| Personnel | 9,749 | 9,891 | ||||
| Other income (loss) | 412 | (112) | ||||
| Income tax expense (benefit) | (405) | 501 | ||||
| Net income (loss) | (276) | [1] | 1,483 | [1] | ||
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Debt Securities [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Gains on sales of debt securities | 377 | 68 | ||||
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Reclassification out of Accumulated Other Comprehensive Income [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Net income (loss) | 144 | (163) | ||||
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Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member] | Debt Securities [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Gains on sales of debt securities | 377 | 68 | ||||
| Other-than-temporary impairment | (1) | (9) | ||||
| Income (loss) before income taxes | 376 | 59 | ||||
| Income tax expense (benefit) | 143 | 22 | ||||
| Net income (loss) | 233 | 37 | ||||
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Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Income (loss) before income taxes | (131) | (235) | ||||
| Income tax expense (benefit) | (49) | (87) | ||||
| Net income (loss) | (82) | (148) | ||||
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Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Interest Rate Contracts [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Net interest income | (281) | (275) | ||||
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Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Equity Contracts [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Personnel | 150 | 40 | ||||
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Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Income (loss) before income taxes | (13) | (74) | ||||
| Income tax expense (benefit) | (5) | (21) | ||||
| Net income (loss) | (8) | (53) | ||||
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Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member] | Prior service cost and actuarial losses [Member] [Domain]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Personnel | (13) | (74) | ||||
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Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign currency [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||
| Other income (loss) | 2 | (34) | ||||
| Income (loss) before income taxes | 2 | (34) | ||||
| Income tax expense (benefit) | 1 | (35) | ||||
| Net income (loss) | $ 1 | $ 1 | ||||
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