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 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]        
Revenues $ 20,428 $ 28,453 $ 64,674 $ 68,566
Net income (loss) 340 6,232 3,456 (545)
Operating Segments [Member]
        
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]        
Segments' total revenue, net of interest expense (FTE basis) 21,697 22,432 66,610 58,364
Net income (loss) 1,886 1,558 7,938 (3,933)
ALM activities [Member]
        
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]        
Revenues (930) 5,286 (1,623) 6,193
Net income (loss) (1,157) 2,578 (3,210) 632
Equity investment income [Member]
        
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]        
Revenues 165 1,380 519 3,935
Net income (loss) 104 869 327 2,479
Liquidating businesses [Member]
        
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]        
Revenues 271 521 1,173 2,285
Net income (loss) 8 (241) 219 (67)
FTE basis adjustment [Member]
        
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]        
Revenues (229) (249) (670) (714)
Merger and restructuring charges [Member]
        
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]        
Net income (loss)    (111) 0 (338)
Other [Member]
        
Segment Reporting Revenue And Net Income Loss Reconciling Item [Line Items]        
Revenues (546) (917) (1,335) (1,497)
Net income (loss) $ (501) $ 1,579 $ (1,818) $ 682