|
Securitizations and Variable Interest Entities, Significant Continuing Involvement - Unconsolidated VIEs (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | $ 1,553,824 | $ 1,463,183 |
|
Conforming Residential Mortgage Backed Securities [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 1,268,494 | 1,135,629 |
|
Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 49,794 | 61,461 |
|
Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 168,126 | 179,007 |
|
Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 6,940 | 11,240 |
|
Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 8,155 | 9,757 |
|
Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 10,404 | 9,606 |
|
Tax Credit Structures [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 20,098 | 19,257 |
|
Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 6,641 | 12,191 |
|
Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 4,771 | 6,318 |
|
Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 10,401 | 18,717 |
|
Debt and equity interests [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 35,664 | 39,799 |
| Maximum exposure to loss | 35,664 | 39,799 |
|
Debt and equity interests [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 3,620 | 4,682 |
| Maximum exposure to loss | 3,620 | 4,682 |
|
Debt and equity interests [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 2,188 | 2,460 |
| Maximum exposure to loss | 2,188 | 2,460 |
|
Debt and equity interests [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,081 | 7,063 |
| Maximum exposure to loss | 7,081 | 7,063 |
|
Debt and equity interests [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 13 | 1,107 |
| Maximum exposure to loss | 13 | 1,107 |
|
Debt and equity interests [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,962 | 9,511 |
| Maximum exposure to loss | 7,962 | 9,511 |
|
Debt and equity interests [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,155 | 6,942 |
| Maximum exposure to loss | 7,155 | 6,942 |
|
Debt and equity interests [Member] | Tax Credit Structures [Member]
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 5,180 | 4,119 |
| Maximum exposure to loss | 5,180 | 4,119 |
|
Debt and equity interests [Member] | Collateralized loan obligations [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,439 | 2,019 |
| Maximum exposure to loss | 1,439 | 2,019 |
|
Debt and equity interests [Member] | Investment funds [Member]
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 49 | 0 |
| Maximum exposure to loss | 49 | 0 |
|
Debt and equity interests [Member] | Other securitizations and transactions [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 977 | 1,896 |
| Maximum exposure to loss | 977 | 1,896 |
|
Servicing assets [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 11,114 | 12,080 |
| Maximum exposure to loss | 11,114 | 12,080 |
|
Servicing assets [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 10,336 | 11,070 |
| Maximum exposure to loss | 10,336 | 11,070 |
|
Servicing assets [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 284 | 353 |
| Maximum exposure to loss | 284 | 353 |
|
Servicing assets [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 466 | 623 |
| Maximum exposure to loss | 466 | 623 |
|
Servicing assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Servicing assets [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Servicing assets [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Servicing assets [Member] | Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Servicing assets [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Servicing assets [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Servicing assets [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 28 | 34 |
| Maximum exposure to loss | 28 | 34 |
|
Variable Interest Entity Derivatives [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 786 | 643 |
| Maximum exposure to loss | 1,340 | 2,487 |
|
Variable Interest Entity Derivatives [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Variable Interest Entity Derivatives [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 1 |
| Maximum exposure to loss | 0 | 1 |
|
Variable Interest Entity Derivatives [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 404 | 349 |
| Maximum exposure to loss | 446 | 538 |
|
Variable Interest Entity Derivatives [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 471 | 193 |
| Maximum exposure to loss | 471 | 874 |
|
Variable Interest Entity Derivatives [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Variable Interest Entity Derivatives [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (104) | (130) |
| Maximum exposure to loss | 104 | 130 |
|
Variable Interest Entity Derivatives [Member] | Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Variable Interest Entity Derivatives [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1 | 40 |
| Maximum exposure to loss | 1 | 41 |
|
Variable Interest Entity Derivatives [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Variable Interest Entity Derivatives [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 14 | 190 |
| Maximum exposure to loss | 318 | 903 |
|
Other commitments and guarantees [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (3,255) | (2,463) |
| Maximum exposure to loss | 8,179 | 6,170 |
|
Other commitments and guarantees [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (1,690) | (975) |
| Maximum exposure to loss | 5,061 | 3,657 |
|
Other commitments and guarantees [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (53) | (48) |
| Maximum exposure to loss | 353 | 295 |
|
Other commitments and guarantees [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Other commitments and guarantees [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 144 | 0 |
| Maximum exposure to loss | 144 | 0 |
|
Other commitments and guarantees [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Other commitments and guarantees [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 1,967 | 1,504 |
|
Other commitments and guarantees [Member] | Tax Credit Structures [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (1,657) | (1,439) |
| Maximum exposure to loss | 247 | 0 |
|
Other commitments and guarantees [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 261 | 523 |
|
Other commitments and guarantees [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 27 | 41 |
|
Other commitments and guarantees [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1 | (1) |
| Maximum exposure to loss | 119 | 150 |
|
Net assets [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 44,309 | 50,059 |
| Maximum exposure to loss | 56,297 | 60,536 |
|
Net assets [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 12,266 | 14,777 |
| Maximum exposure to loss | 19,017 | 19,409 |
|
Net assets [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 2,419 | 2,766 |
| Maximum exposure to loss | 2,825 | 3,109 |
|
Net assets [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,951 | 8,035 |
| Maximum exposure to loss | 7,993 | 8,224 |
|
Net assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 628 | 1,300 |
| Maximum exposure to loss | 628 | 1,981 |
|
Net assets [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,962 | 9,511 |
| Maximum exposure to loss | 7,962 | 9,511 |
|
Net assets [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,051 | 6,812 |
| Maximum exposure to loss | 9,226 | 8,576 |
|
Net assets [Member] | Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 3,523 | 2,680 |
| Maximum exposure to loss | 5,427 | 4,119 |
|
Net assets [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,440 | 2,059 |
| Maximum exposure to loss | 1,701 | 2,583 |
|
Net assets [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 49 | 0 |
| Maximum exposure to loss | 76 | 41 |
|
Net assets [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,020 | 2,119 |
| Maximum exposure to loss | $ 1,442 | $ 2,983 |