Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.6
Business Segment Information - Reconciliation of Revenue and Net Income (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]    
Revenues $ 22,278 $ 26,877
Net income (loss) 653 2,049
Operating Segments [Member]
    
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]    
Segments' total revenue, net of interest expense (FTE basis) 23,098 24,997
Net income (loss) 3,244 3,161
ALM activities [Member]
    
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]    
Revenues (1,170) (236)
Net income (loss) (1,823) (1,415)
Equity investment income [Member]
    
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]    
Revenues 417 1,415
Net income (loss) 263 891
Liquidating businesses [Member]
    
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]    
Revenues 363 1,019
Net income (loss) 52 133
FTE basis adjustment [Member]
    
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]    
Revenues (207) (218)
Merger and restructuring charges [Member]
    
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]    
Net income (loss)    (127)
Other [Member]
    
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]    
Revenues (223) (100)
Net income (loss) $ (1,083) $ (594)