v2.4.0.6
Segment and Geographic Information (Net Interest by Segments) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Interest income $ 1,323 [1] $ 1,961 [1] $ 2,865 [1] $ 3,820 [1]
Interest expense 1,484 [1] 2,029 [1] 3,085 [1] 3,882 [1]
Net interest (161) (68) (220) (62)
Institutional Securities
        
Interest income 931 1,579 2,076 3,065
Interest expense 1,474 1,983 3,080 3,796
Net interest (543) (404) (1,004) (731)
Global Wealth Management Group
        
Interest income 489 464 979 917
Interest expense 98 118 178 230
Net interest 391 346 801 687
Asset Management
        
Interest income 2 3 5 7
Interest expense 11 13 22 25
Net interest (9) (10) (17) (18)
Intersegment Eliminations
        
Interest income (99) (85) (195) (169)
Interest expense (99) (85) (195) (169)
Net interest $ 0 $ 0 $ 0 $ 0
[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.