Annual report pursuant to Section 13 and 15(d)

Business Segment Information - Reconciliation of Revenue and Net Income (Details)

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Business Segment Information - Reconciliation of Revenue and Net Income (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Segment Reporting Information [Line Items]      
Liabilities, Fair Value Adjustment $ (5,100,000,000) $ 3,300,000,000 $ 0
Revenues 83,334,000,000 [1] 93,454,000,000 [1] 110,220,000,000 [1]
Net income (loss) 4,188,000,000 1,446,000,000 (2,238,000,000)
Operating Segments [Member]
      
Segment Reporting Information [Line Items]      
Segments' total revenue, net of interest expense (FTE basis) 85,025,000,000 78,331,000,000 100,774,000,000
Net income (loss) 7,816,000,000 (3,266,000,000) (3,545,000,000)
Asset And Liability Management Activities [Member]
      
Segment Reporting Information [Line Items]      
Revenues (2,412,000,000) [2] 7,576,000,000 [2] 1,872,000,000 [2]
Net income (loss) (4,088,000,000) 513,000,000 (2,480,000,000)
Equity Investment Income [Member]
      
Segment Reporting Information [Line Items]      
Revenues 1,135,000,000 7,105,000,000 4,629,000,000
Net income (loss) 715,000,000 4,476,000,000 2,916,000,000
Liquidating Businesses [Member]
      
Segment Reporting Information [Line Items]      
Revenues 2,279,000,000 3,526,000,000 6,005,000,000
Net income (loss) 226,000,000 (263,000,000) 635,000,000
Fully Taxable Equivalent Basis Adjustment [Member]
      
Segment Reporting Information [Line Items]      
Revenues (901,000,000) (972,000,000) (1,170,000,000)
Merger and restructuring charges [Member]
      
Segment Reporting Information [Line Items]      
Net income (loss) 0 (402,000,000) (1,146,000,000)
Other Adjustment [Member]
      
Segment Reporting Information [Line Items]      
Revenues (1,792,000,000) (2,112,000,000) (1,890,000,000)
Net income (loss) $ (481,000,000) $ 388,000,000 $ 1,382,000,000
[1] There were no material intercompany revenues between geographic regions for any of the periods presented.
[2] Includes negative fair value adjustments on structured liabilities of $5.1 billion in 2012 and positive fair value adjustments on structured liabilities of $3.3 billion and $18 million in 2011 and 2010.