Annual report pursuant to Section 13 and 15(d)

Derivatives - Valuation Adjustments (Details)

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Derivatives - Valuation Adjustments (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Derivatives Instruments and Heding Activities Disclosure [Abstract]    
Derivative assets (CVA), Gross $ 626,000,000 [1] $ (1,331,000,000) [1]
Derivative assets (CVA), Net 393,000,000 [1] (969,000,000) [1]
Derivative liabilities (DVA), Gross (1,003,000,000) [2] 613,000,000 [2]
Derivative liabilities (DVA), Net (1,098,000,000) [2] 493,000,000 [2]
Derivative credit risk valuation adjustment to derivative assets 1,100,000,000 1,500,000,000
Derivative credit risk valuation adjustment to derivative liabilities $ 400,000,000 $ 1,100,000,000
[1] At December 31, 2012 and December 31, 2011, the cumulative counterparty credit risk valuation adjustment reduced the derivative assets balance by $1.1 billion and $1.5 billion.
[2] At December 31, 2012 and December 31, 2011, Merrill Lynch's cumulative DVA reduced the derivative liabilities balance by $0.4 billion and $1.1 billion.