Quarterly report pursuant to Section 13 or 15(d)

Securities (Details Textuals)

v2.3.0.15
Securities (Details Textuals) (USD $)
3 Months Ended 9 Months Ended 3 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Dec. 31, 2010
Sep. 30, 2011
Agency Securities [Member]
Sep. 30, 2011
Equity Investment In First Data Corporation [Member]
Dec. 31, 2010
Equity Investment In First Data Corporation [Member]
Dec. 31, 2009
Equity Investment In First Data Corporation [Member]
Sep. 30, 2011
Equity Investment in BlackRock [Member]
Sep. 30, 2011
Equity Investment in China Construction Bank [Member]
Sep. 30, 2011
Equity Investment in China Construction Bank [Member]
Sep. 30, 2010
Equity Investment in China Construction Bank [Member]
Dec. 31, 2010
Equity Investment in China Construction Bank [Member]
Schedule of Available-for-sale Securities [Line Items]                            
Sale of Stock, Number of Shares Issued in Transaction                     13,100,000,000      
Corporation Owned Common Shares         12,500,000,000           12,500,000,000 12,500,000,000   25,600,000,000
Cost method investment ownership percentage                     5.00% 5.00%   10.00%
Available for sale common shares owned by corporation                     10,500,000,000 10,500,000,000    
Restricted common shares owned by corporation                     2,000,000,000 2,000,000,000    
Cost of the investment                     $ 4,500,000,000 $ 4,500,000,000   $ 9,200,000,000
Carrying value of investments                     7,200,000,000 7,200,000,000   19,700,000,000
Fair value of equity investment                     7,700,000,000 7,700,000,000   20,800,000,000
Dividend income on CCB investment                       836,000,000 535,000,000  
Preferred shares owned by corporation                   13,600,000        
Carrying value of economic ownership interest in BlackRock in percentage 7.00%   7.00%                      
Fair value of joint venture                 4,700,000,000          
Carrying value of joint venture             3,400,000,000 4,700,000,000            
Securities (Textuals) [Abstract]                            
Prime bonds 89.00%   89.00%   90.00%                  
Alt-A bonds 9.00%   9.00%   8.00%                  
Subprime bonds 2.00%   2.00%   2.00%                  
Accumulated net unrealized gains on AFS debt included in accumulated OCI 4,300,000,000   4,300,000,000                      
Income tax expense     2,500,000,000                      
Nonperforming debt securities 16,000,000   16,000,000   44,000,000                  
Payments to Acquire Held-to-maturity Securities     26,168,000,000 100,000,000   26,200,000,000                
Held-to-maturity debt securities 26,458,000,000   26,458,000,000   427,000,000 26,500,000,000                
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value           26,500,000,000                
Fair value of HTM debt securities 26,508,000,000   26,508,000,000   427,000,000 11,000,000,000                
Held-to-maturity Securities, Unrecognized Holding Loss           38,000,000                
Held To Maturity Unrecognized Holding Gain Fair Value           100,000,000                
Held To Maturity Debt Securities Unrecognized Holding Gain, Net           100,000,000                
Gross gains recorded in OCI on credit impaired AFS debt securities 2,000,000 18,000,000 6,000,000 82,000,000                    
Weighted-average severity by collateral type for prime bonds 45.00%   45.00%                      
Weighted-average severity by collateral type for Alt-A bonds 51.00%   51.00%                      
Weighted-average severity by collateral type for Subprime bonds 56.00%   56.00%                      
Weighted-average life default rate by collateral type for prime bonds 37.00%   37.00%                      
Weighted-average life default rate by collateral type for Alt-A bonds 66.00%   66.00%                      
Weighted-average life default rate by collateral type for Subprime bonds 62.00%   62.00%                      
Number of available-for-sale securities where amortized cost exceed their fair value 4,500   4,500   8,500                  
Amortized cost of AFS securities exceeded fair value by 1,600,000,000   1,600,000,000   4,500,000,000                  
Pre-tax investment gain     377,000,000               3,600,000,000      
Impairment write-down on joint venture $ 630,000,000   $ 1,100,000,000