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Borrowings and Other Secured Financings (Other Secured Financings) (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
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Dec. 31, 2011
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| Other secured financings | $ 15,727 | [1] | $ 20,719 | [1] | ||||||
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Original Maturities Greater than One Year
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| Other secured financings | 14,431 | 18,696 | ||||||||
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Original Maturities One Year or Less
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| Other secured financings | 641 | [2] | 275 | [2] | ||||||
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Failed Sales
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| Other secured financings | 655 | [3] | 1,748 | [3] | ||||||
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Fair Value
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| Other secured financings | 9,466 | 14,594 | ||||||||
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Fixed Rate
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| Other secured financings | 631 | |||||||||
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Variable Rate
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| Other secured financings | $ 10 | |||||||||
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