Interest Income and Interest Expense Interest Income and Interest Expense (Policies)

12 Months Ended

Dec. 31, 2011

Interest Income and Interest Expense [Abstract]

Interest Income And Interest Expense [Policy Text Block]

Interest income and interest expense is recorded in the Consolidated Statements of Income and classified based on the nature of the underlying asset or liability. Interest income and interest expense includes the current-period interest accruals for financial instruments measured at fair value, except for financial instruments containing embedded derivatives that would be separately accounted for in accordance with U.S. GAAP absent the fair value option election; for those instruments, all changes in fair value including any interest elements, are reported in principal transactions revenue. For financial instruments that are not measured at fair value, the related interest is included within interest income or interest expense, as applicable.