v2.4.0.6
Interest Income and Interest Expense (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Interest income:                      
Financial instruments owned                 $ 2,736 [1],[2] $ 3,593 [1],[2] $ 3,931 [1],[2]
Securities available for sale                 343 [2] 348 [2] 215 [2]
Loans                 643 [2] 356 [2] 315 [2]
Interest bearing deposits with banks                 124 [2] 186 [2] 155 [2]
Federal funds sold and securities purchased under agreements to resell and securities borrowed                 364 [2] 886 [2] 769 [2]
Other                 1,515 [2] 1,889 [2] 1,920 [2]
Total Interest income                 5,725 [2] 7,258 [2] 7,305 [2]
Interest expense:                      
Deposits                 181 [2] 236 [2] 310 [2]
Commercial paper and other short-term borrowings                 38 [2] 41 [2] 28 [2]
Long-term debt                 4,622 [2] 4,912 [2] 4,592 [2]
Securities sold under agreements to repurchase and securities loaned                 1,805 [2] 1,925 [2] 1,591 [2]
Other                 (722) [2] (212) [2] (114) [2]
Total Interest expense                 5,924 [2] 6,902 [2] 6,407 [2]
Net interest $ 175 $ (155) $ (160) $ (59) $ 270 $ 145 $ (66) $ 7 $ (199) $ 356 $ 898
[1] Interest expense on Financial instruments sold, not yet purchased is reported as a reduction to Interest income on Financial instruments owned.
[2] Interest income and expense are recorded within the 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.