|
Securitizations and Variable Interest Entities, Significant Continuing Involvement - Unconsolidated VIEs (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | $ 1,527,749 | $ 1,463,183 |
|
Conforming Residential Mortgage Backed Securities [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 1,207,348 | 1,135,629 |
|
Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 58,016 | 61,461 |
|
Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 175,045 | 179,007 |
|
Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 10,493 | 11,240 |
|
Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 9,676 | 9,757 |
|
Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 12,036 | 9,606 |
|
Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 19,717 | 19,257 |
|
Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 11,831 | 12,191 |
|
Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 6,155 | 6,318 |
|
Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 17,432 | 18,717 |
|
Debt and equity interests [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 39,615 | 39,799 |
| Maximum exposure to loss | 39,615 | 39,799 |
|
Debt and equity interests [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 4,418 | 4,682 |
| Maximum exposure to loss | 4,418 | 4,682 |
|
Debt and equity interests [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 2,433 | 2,460 |
| Maximum exposure to loss | 2,433 | 2,460 |
|
Debt and equity interests [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,033 | 7,063 |
| Maximum exposure to loss | 7,033 | 7,063 |
|
Debt and equity interests [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,011 | 1,107 |
| Maximum exposure to loss | 1,011 | 1,107 |
|
Debt and equity interests [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 9,429 | 9,511 |
| Maximum exposure to loss | 9,429 | 9,511 |
|
Debt and equity interests [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,562 | 6,942 |
| Maximum exposure to loss | 7,562 | 6,942 |
|
Debt and equity interests [Member] | Tax Credit Structures [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 4,113 | 4,119 |
| Maximum exposure to loss | 4,113 | 4,119 |
|
Debt and equity interests [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 2,002 | 2,019 |
| Maximum exposure to loss | 2,002 | 2,019 |
|
Debt and equity interests [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 0 | 0 |
|
Debt and equity interests [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,614 | 1,896 |
| Maximum exposure to loss | 1,614 | 1,896 |
|
Servicing assets [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 12,790 | 12,080 |
| Maximum exposure to loss | 12,790 | 12,080 |
|
Servicing assets [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 11,922 | 11,070 |
| Maximum exposure to loss | 11,922 | 11,070 |
|
Servicing assets [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 367 | 353 |
| Maximum exposure to loss | 367 | 353 |
|
Servicing assets [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 469 | 623 |
| Maximum exposure to loss | 469 | 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) | 32 | 34 |
| Maximum exposure to loss | 32 | 34 |
|
Variable Interest Entity Derivatives [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 232 | 643 |
| Maximum exposure to loss | 1,932 | 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) | 1 | 1 |
| Maximum exposure to loss | 1 | 1 |
|
Variable Interest Entity Derivatives [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 337 | 349 |
| Maximum exposure to loss | 519 | 538 |
|
Variable Interest Entity Derivatives [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 45 | 193 |
| Maximum exposure to loss | 838 | 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) | (142) | (130) |
| Maximum exposure to loss | 142 | 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) | 8 | 40 |
| Maximum exposure to loss | 9 | 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) | (17) | 190 |
| Maximum exposure to loss | 423 | 903 |
|
Other commitments and guarantees [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (2,615) | (2,463) |
| Maximum exposure to loss | 6,613 | 6,170 |
|
Other commitments and guarantees [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (1,087) | (975) |
| Maximum exposure to loss | 3,632 | 3,657 |
|
Other commitments and guarantees [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (49) | (48) |
| Maximum exposure to loss | 327 | 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) | 0 | 0 |
| Maximum exposure to loss | 0 | 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 | 1,944 | 1,504 |
|
Other commitments and guarantees [Member] | Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (1,399) | (1,439) |
| Maximum exposure to loss | 0 | 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 | 523 | 523 |
|
Other commitments and guarantees [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 37 | 41 |
|
Other commitments and guarantees [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (80) | (1) |
| Maximum exposure to loss | 150 | 150 |
|
Net assets [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 50,022 | 50,059 |
| Maximum exposure to loss | 60,950 | 60,536 |
|
Net assets [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 15,253 | 14,777 |
| Maximum exposure to loss | 19,972 | 19,409 |
|
Net assets [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 2,752 | 2,766 |
| Maximum exposure to loss | 3,128 | 3,109 |
|
Net assets [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,839 | 8,035 |
| Maximum exposure to loss | 8,021 | 8,224 |
|
Net assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,056 | 1,300 |
| Maximum exposure to loss | 1,849 | 1,981 |
|
Net assets [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 9,429 | 9,511 |
| Maximum exposure to loss | 9,429 | 9,511 |
|
Net assets [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,420 | 6,812 |
| Maximum exposure to loss | 9,648 | 8,576 |
|
Net assets [Member] | Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 2,714 | 2,680 |
| Maximum exposure to loss | 4,113 | 4,119 |
|
Net assets [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 2,010 | 2,059 |
| Maximum exposure to loss | 2,534 | 2,583 |
|
Net assets [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 37 | 41 |
|
Net assets [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,549 | 2,119 |
| Maximum exposure to loss | $ 2,219 | $ 2,983 |