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Guarantees, Pledged Assets and Collateral Textuals (Details) (USD $)
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3 Months Ended | |
|---|---|---|
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Mar. 31, 2013
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Dec. 31, 2012
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| Guarantees (Textuals) [Abstract] | ||
| Maximum exposure to loss | $ 59,867,000,000 | $ 61,600,000,000 |
| Collateral | 454,000,000 | 443,000,000 |
| Securities Loaned | 443,000,000 | 436,000,000 |
| Percentage share of losses owed on loans and MHFS sold with recourse | Primarily all of these programs and arrangements require that we share in the loans’ credit exposure for their remaining life by providing recourse to the GSE, up to 33.33% of actual losses incurred on a pro-rata basis. | |
| Pledged collateral assets related to consolidated VIEs | 13,200,000,000 | 14,600,000,000 |
| Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value | 9,600,000,000 | 9,100,000,000 |
| Net amounts in consolidated balance sheet | 48,059,000,000 | 43,286,000,000 |
| Non-cash collateral received, fair value | 52,000,000,000 | 46,600,000,000 |
| Collateral received with the right to sell or repledge | 52,000,000,000 | 46,600,000,000 |
| Collateral sold or repledged | 34,000,000,000 | 29,700,000,000 |
| Non-cash collateral pledged, fair value | 41,000,000,000 | 36,400,000,000 |
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Fed Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Member]
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| Guarantees (Textuals) [Abstract] | ||
| Net amounts in consolidated balance sheet | 37,600,000,000 | 33,800,000,000 |
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Loans [Member]
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| Guarantees (Textuals) [Abstract] | ||
| Net amounts in consolidated balance sheet | 10,500,000,000 | 9,500,000,000 |
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Direct pay letters of credit (DPLCs) [Member]
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| Guarantees (Textuals) [Abstract] | ||
| Maximum exposure to loss | 18,200,000,000 | 18,500,000,000 |
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Third party clearing indemnifications [Member]
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| Guarantees (Textuals) [Abstract] | ||
| Maximum exposure to loss | 2,700,000,000 | |
| Third-party clearing customer obligations | 741,000,000 | |
| Collateral provided to third-party clearing agents | 3,600,000,000 | |
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Securities lending and other indemnifications [Member]
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| Guarantees (Textuals) [Abstract] | ||
| Maximum exposure to loss | 3,131,000,000 | 2,541,000,000 |
| Guarantor Obligations, Term | These arrangements are for an indefinite period of time whereby we indemnify our clients against default by the borrower in returning these lent securities. This indemnity is supported by collateral received from the borrowers and is generally in the form of cash or highly liquid securities that are marked to market daily. | |
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Loans and MHFS sold with recourse [Member]
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| Guarantees (Textuals) [Abstract] | ||
| Loans repurchased | 11,000,000 | |
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Trading assets and other [Member]
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| Guarantees (Textuals) [Abstract] | ||
| Securities owned and pledged as collateral available to be repledged, Fair Value | 31,400,000,000 | 27,400,000,000 |
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Available for sale Securities [Member]
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| Guarantees (Textuals) [Abstract] | ||
| Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value | $ 8,600,000,000 | $ 8,400,000,000 |