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Business Segment Information - Consolidated Assets (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2013
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Dec. 31, 2012
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Mar. 31, 2012
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|---|---|---|---|
| Segment Reporting, Asset Reconciling Item [Line Items] | |||
| Total assets | $ 2,174,819 | $ 2,209,974 | $ 2,181,449 |
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Operating Segments [Member]
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| Segment Reporting, Asset Reconciling Item [Line Items] | |||
| Total assets | 1,952,504 | 1,839,916 | |
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ALM activities, including securities portfolio [Member]
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| Segment Reporting, Asset Reconciling Item [Line Items] | |||
| Total assets | 693,498 | 641,385 | |
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Equity investments [Member]
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| Segment Reporting, Asset Reconciling Item [Line Items] | |||
| Total assets | 4,858 | 6,182 | |
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Liquidating businesses [Member]
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| Segment Reporting, Asset Reconciling Item [Line Items] | |||
| Total assets | 29,496 | 35,954 | |
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Elimination of segment excess asset allocations to match liabilities [Member]
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| Segment Reporting, Asset Reconciling Item [Line Items] | |||
| Total assets | (552,838) | (496,391) | |
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Other [Member]
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| Segment Reporting, Asset Reconciling Item [Line Items] | |||
| Total assets | $ 47,301 | $ 154,403 |
| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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