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Borrowings and Other Secured Financings (Narratives) (Details) (USD $)
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12 Months Ended | ||||||||||||||||||||||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2012
Subordinated Debt
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Oct. 31, 2012
Subordinated Debt
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Dec. 31, 2011
Subordinated Debt
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Dec. 31, 2012
Junior Subordinated Debt
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Dec. 31, 2011
Junior Subordinated Debt
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Mar. 31, 2008
Junior Subordinated Debt
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Dec. 31, 2011
TLGP
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| Notes issued, principal amount | $ 24,000,000,000 | $ 33,000,000,000 | $ 2,000,000,000 | $ 5,579,173,000 | |||||||||||||||||||
| Notes matured or retired | 43,000,000,000 | 39,000,000,000 | |||||||||||||||||||||
| Senior debt that is structured to be callable by the Company or extendible at the option of holders of the senior debt securities | 1,131,000,000 | 1,179,000,000 | |||||||||||||||||||||
| Debt agreement entered by subsidiaries, which allow holder to put | 1,895,000,000 | 2,234,000,000 | |||||||||||||||||||||
| Weighted average coupon | 4.40% | [1],[2],[3],[4] | 4.00% | [1],[2],[5] | 3.60% | [1] | 4.81% | 4.77% | 6.37% | 6.37% | |||||||||||||
| Year of maturity, minimum | 2014 | ||||||||||||||||||||||
| Year of maturity, maximum | 2067 | ||||||||||||||||||||||
| Year which note maturity can be extended to | 2052 | ||||||||||||||||||||||
| Long-term debt outstanding | $ 169,571,000,000 | [3],[4] | $ 184,234,000,000 | [5] | $ 12,100,000,000 | ||||||||||||||||||
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