v2.4.0.6
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Federal Funds Sold, Securities Purchased Under Resale Agreements and Other Short-Term Investments    
Federal funds sold and securities purchased under resale agreements $ 33,884,000,000 $ 24,255,000,000
Interest-earning deposits 102,408,000,000 18,917,000,000
Other short-term investments 1,021,000,000 1,195,000,000
Total 137,313,000,000 44,367,000,000
Loans [Member]
   
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments Textual [Abstract]    
Securities purchased under long-term resale agreements $ 9,500,000,000 $ 8,700,000,000