|
Securitizations and Variable Interest Entities, Significant Continuing Involvement - Unconsolidated VIEs (Details) (USD $)
In Millions, unless otherwise specified |
Jun. 30, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | $ 1,572,166 | $ 1,553,824 |
|
Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 1,292,918 | 1,268,494 |
|
Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 43,369 | 49,794 |
|
Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 170,679 | 168,126 |
|
Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 7,084 | 6,940 |
|
Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 8,089 | 8,155 |
|
Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 10,640 | 10,404 |
|
Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 20,524 | 20,098 |
|
Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 5,719 | 6,641 |
|
Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 3,801 | 4,771 |
|
Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Total VIE assets | 9,343 | 10,401 |
|
Debt and equity interests [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 34,746 | 35,664 |
| Maximum exposure to loss | 34,746 | 35,664 |
|
Debt and equity interests [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 3,791 | 3,620 |
| Maximum exposure to loss | 3,791 | 3,620 |
|
Debt and equity interests [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,709 | 2,188 |
| Maximum exposure to loss | 1,709 | 2,188 |
|
Debt and equity interests [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,526 | 7,081 |
| Maximum exposure to loss | 7,526 | 7,081 |
|
Debt and equity interests [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 36 | 13 |
| Maximum exposure to loss | 36 | 13 |
|
Debt and equity interests [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,733 | 7,962 |
| Maximum exposure to loss | 7,733 | 7,962 |
|
Debt and equity interests [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 6,606 | 7,155 |
| Maximum exposure to loss | 6,606 | 7,155 |
|
Debt and equity interests [Member] | Tax Credit Structures [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 5,200 | 5,180 |
| Maximum exposure to loss | 5,200 | 5,180 |
|
Debt and equity interests [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,089 | 1,439 |
| Maximum exposure to loss | 1,089 | 1,439 |
|
Debt and equity interests [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 50 | 49 |
| Maximum exposure to loss | 50 | 49 |
|
Debt and equity interests [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,006 | 977 |
| Maximum exposure to loss | 1,006 | 977 |
|
Servicing assets [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 13,714 | 11,114 |
| Maximum exposure to loss | 13,714 | 11,114 |
|
Servicing assets [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 13,022 | 10,336 |
| Maximum exposure to loss | 13,022 | 10,336 |
|
Servicing assets [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 272 | 284 |
| Maximum exposure to loss | 272 | 284 |
|
Servicing assets [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 395 | 466 |
| Maximum exposure to loss | 395 | 466 |
|
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) | 25 | 28 |
| Maximum exposure to loss | 25 | 28 |
|
Variable Interest Entity Derivatives [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 589 | 786 |
| Maximum exposure to loss | 1,028 | 1,340 |
|
Variable Interest Entity Derivatives [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (8) | 0 |
| Maximum exposure to loss | 8 | 0 |
|
Variable Interest Entity Derivatives [Member] | Other/Nonconforming 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] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 287 | 404 |
| Maximum exposure to loss | 340 | 446 |
|
Variable Interest Entity Derivatives [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 397 | 471 |
| Maximum exposure to loss | 397 | 471 |
|
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) | (91) | (104) |
| Maximum exposure to loss | 91 | 104 |
|
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) | 0 | 1 |
| Maximum exposure to loss | 0 | 1 |
|
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) | 4 | 14 |
| Maximum exposure to loss | 192 | 318 |
|
Other commitments and guarantees [Member]
|
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| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (3,763) | (3,255) |
| Maximum exposure to loss | 9,005 | 8,179 |
|
Other commitments and guarantees [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (1,918) | (1,690) |
| Maximum exposure to loss | 5,683 | 5,061 |
|
Other commitments and guarantees [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (41) | (53) |
| Maximum exposure to loss | 363 | 353 |
|
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) | (130) | 144 |
| Maximum exposure to loss | 130 | 144 |
|
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 | 2,005 | 1,967 |
|
Other commitments and guarantees [Member] | Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (1,485) | (1,657) |
| Maximum exposure to loss | 432 | 247 |
|
Other commitments and guarantees [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 158 | 261 |
|
Other commitments and guarantees [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 0 | 0 |
| Maximum exposure to loss | 43 | 27 |
|
Other commitments and guarantees [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | (189) | 1 |
| Maximum exposure to loss | 191 | 119 |
|
Net assets [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 45,286 | 44,309 |
|
Net assets [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 14,887 | 12,266 |
|
Net assets [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,940 | 2,419 |
|
Net assets [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 8,208 | 7,951 |
|
Net assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 303 | 628 |
|
Net assets [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 7,733 | 7,962 |
|
Net assets [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 6,515 | 7,051 |
|
Net assets [Member] | Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 3,715 | 3,523 |
|
Net assets [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 1,089 | 1,440 |
|
Net assets [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 50 | 49 |
|
Net assets [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Carrying value asset (liability) | 846 | 1,020 |
|
Total exposure [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 58,493 | 56,297 |
|
Total exposure [Member] | Conforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 22,504 | 19,017 |
|
Total exposure [Member] | Other/Nonconforming Residential Mortgage Backed Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 2,344 | 2,825 |
|
Total exposure [Member] | Commercial mortgage securitizations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 8,261 | 7,993 |
|
Total exposure [Member] | Collateralized Debt Obligations Debt Securities [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 563 | 628 |
|
Total exposure [Member] | Collateralized Debt Obligations Loans [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 7,733 | 7,962 |
|
Total exposure [Member] | Asset-based finance structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 8,702 | 9,226 |
|
Total exposure [Member] | Tax Credit Structures [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 5,632 | 5,427 |
|
Total exposure [Member] | Collateralized loan obligations [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 1,247 | 1,701 |
|
Total exposure [Member] | Investment funds [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | 93 | 76 |
|
Total exposure [Member] | Other securitizations and transactions [Member]
|
||
| Variable Interest Entity [Line Items] | ||
| Maximum exposure to loss | $ 1,414 | $ 1,442 |