v2.3.0.11
Segment And Geographic Information (Net Interest By Segments) (Details) (USD $)
In Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Interest income $ 1,957 [1] $ 1,747 [1] $ 3,811 [1] $ 3,483 [1]
Interest expense 2,029 [1] 1,606 [1] 3,882 [1] 2,974 [1]
Net interest (72) 141 (71) 509
Institutional Securities [Member]
        
Interest income 1,573 1,359 3,053 2,755
Interest expense 1,983 1,484 3,796 2,769
Net interest (410) (125) (743) (14)
Global Wealth Management Group [Member]
        
Interest income 466 387 920 726
Interest expense 118 99 230 247
Net interest 348 288 690 479
Asset Management [Member]
        
Interest income 3 3 7 9
Interest expense 13 25 25 50
Net interest (10) (22) (18) (41)
Intersegment Eliminations [Member]
        
Interest income (85) (2) (169) (7)
Interest expense (85) (2) (169) (92)
Net interest       $ 85
[1] Interest income and expense are recorded within the condensed consolidated statements of income depending on the nature of the instrument and related market conventions. When interest is included as a component of the instrument's fair value, interest is included within Principal transactions—Trading revenues or Principal transactions—Investments revenues. Otherwise, it is included within Interest income or Interest expense.