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Accumulated Other Comprehensive Income - Reclassifications Out of Accumulated OCI (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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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax | $ 2,138 | $ 0 | ||
| Gains on sales of debt securities | 356 | 339 | 881 | 1,491 |
| Other-than-temporary impairment | (8) | (9) | (21) | (70) |
| Equity Investment Gains Losses | 1,184 | 238 | 2,427 | 1,371 |
| Net interest income | 10,266 | 9,938 | 31,479 | 30,332 |
| Trading account profits | 1,266 | 1,239 | 6,193 | 5,078 |
| Other income | 260 | (928) | 72 | (1,392) |
| Personnel | (8,310) | (8,431) | (26,732) | (27,348) |
| Income (loss) before income taxes | 4,845 | 1,110 | 12,327 | 4,976 |
| Income tax expense (benefit) | 2,348 | 770 | 4,335 | 1,520 |
| Net income (loss) | 2,497 | 340 | 7,992 | 3,456 |
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Reclassification out of Accumulated Other Comprehensive Income [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Net income (loss) | 525 | 191 | ||
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Available-for-sale debt securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Gains on sales of debt securities | 881 | 1,491 | ||
| Other-than-temporary impairment | (20) | (52) | ||
| Income (loss) before income taxes | 861 | 1,439 | ||
| Income tax expense (benefit) | 318 | 532 | ||
| Net income (loss) | 543 | 907 | ||
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Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Income (loss) before income taxes | (584) | (726) | ||
| Income tax expense (benefit) | (216) | (268) | ||
| Net income (loss) | (368) | (458) | ||
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Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Commodity Contracts [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Trading account profits | (1) | 0 | ||
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Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Equity compensation contracts [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Personnel | 217 | (89) | ||
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Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Rate Contracts [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Net interest income | (818) | (637) | ||
| Other income | 18 | 0 | ||
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Employee benefit plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Income (loss) before income taxes | (204) | (431) | ||
| Income tax expense (benefit) | (68) | (157) | ||
| Net income (loss) | (136) | (274) | ||
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Employee benefit plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Prior Service Costs [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Personnel | (3) | (9) | ||
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Employee benefit plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Transition Obligation [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Personnel | 0 | (31) | ||
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Employee benefit plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Actuarial Losses [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Personnel | (199) | (329) | ||
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Employee benefit plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Settlements and Curtailments [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Personnel | (2) | (62) | ||
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Foreign currency [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Other income | (31) | (2) | ||
| Income (loss) before income taxes | (31) | (2) | ||
| Income tax expense (benefit) | (32) | (2) | ||
| Net income (loss) | 1 | 0 | ||
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Equity Securities [Member] | Available-for-sale debt securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Equity Investment Gains Losses | 765 | 25 | ||
| Income (loss) before income taxes | 765 | 25 | ||
| Income tax expense (benefit) | 280 | 9 | ||
| Net income (loss) | $ 485 | $ 16 | ||