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Accumulated Other Comprehensive Income - Reclassifications Out of Accumulated OCI (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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| Accumulated Other Comprehensive Income [Line Items] | ||||
| Gains on sales of debt securities | $ 457 | $ 400 | $ 525 | $ 1,152 |
| Other-than-temporary impairment | (5) | (13) | (14) | (62) |
| Net interest income | 10,549 | 9,548 | 21,213 | 20,394 |
| Trading account profits | 1,938 | 1,764 | 4,927 | 3,839 |
| Other income (loss) | (76) | 730 | (188) | (464) |
| Personnel | (8,531) | (8,729) | (18,422) | (18,917) |
| Income (loss) before income taxes | 5,498 | 3,147 | 7,482 | 3,866 |
| Income tax expense (benefit) | 1,486 | 684 | 1,987 | 750 |
| Net income (loss) | 4,012 | 2,463 | 5,495 | 3,116 |
| Equity Investment Gains Losses | 680 | 368 | 1,243 | 1,133 |
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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) | (42) | 224 | ||
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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 | 525 | 1,152 | ||
| Other-than-temporary impairment | (13) | (45) | ||
| Income (loss) before income taxes | 512 | 1,107 | ||
| Income tax expense (benefit) | 190 | 410 | ||
| Net income (loss) | 322 | 697 | ||
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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 | (421) | (440) | ||
| Income tax expense (benefit) | (156) | (162) | ||
| Net income (loss) | (265) | (278) | ||
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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) | (3) | ||
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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 | 109 | (61) | ||
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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 | (547) | (376) | ||
| Other income (loss) | 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 | (146) | (314) | ||
| Income tax expense (benefit) | (45) | (115) | ||
| Net income (loss) | (101) | (199) | ||
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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 | (2) | (7) | ||
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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 | (16) | ||
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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 | (144) | (229) | ||
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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 | 0 | (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 (loss) | (32) | 3 | ||
| Income (loss) before income taxes | (32) | 3 | ||
| Income tax expense (benefit) | (33) | 0 | ||
| Net income (loss) | 1 | 3 | ||
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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] | ||||
| Income (loss) before income taxes | 1 | 2 | ||
| Income tax expense (benefit) | 0 | 1 | ||
| Net income (loss) | 1 | 1 | ||
| Equity Investment Gains Losses | $ 1 | $ 2 | ||