Quarterly report pursuant to Section 13 or 15(d)

Securities (Details Textuals)

 v2.3.0.11
Securities (Details Textuals) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]          
Held-to-maturity, at cost (fair value - $181 and $427)         $ 427,000,000
Carrying value of economic ownership interest in BlackRock in percentage 7.00%   7.00%    
Securities (Textuals) [Abstract]          
Prime bonds 90.00%   90.00%   90.00%
Alt-A bonds 9.00%   9.00%   8.00%
Subprime bonds 1.00%   1.00%   2.00%
Accumulated net unrealized gains on AFS debt included in accumulated OCI 1,600,000,000   1,600,000,000    
Income tax expense     944,000,000    
Nonperforming debt securities 17,000,000   17,000,000   44,000,000
Fair value of HTM debt securities 181,000,000   181,000,000   427,000,000
Gross gains recorded in OCI on credit impaired AFS debt securities 3,000,000 16,000,000 10,000,000 49,000,000  
Weighted-average severity by collateral type for prime bonds 44.00%   44.00%    
Weighted-average severity by collateral type for Alt-A bonds 51.00%   51.00%    
Weighted-average severity by collateral type for Subprime bonds 59.00%   59.00%    
Weighted-average life default rate by collateral type for prime bonds 39.00%   39.00%    
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 69.00%   69.00%    
Number of available-for-sale securities where amortized cost exceed their fair value 5,300   5,300   8,500
Amortized cost of AFS securities exceeded fair value by 3,800,000,000   3,800,000,000   4,500,000,000
Minimum cumulative amortized cost and fair value of the Corporation's investment in debt securities in the consolidated shareholders' equity 10.00%   10.00%   10.00%
Pre-tax investment gain     377,000,000    
Impairment write-down on joint venture 500,000,000        
Equity Investment In First Data Corporation [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Fair value of joint venture         4,700,000,000
Carrying value of joint venture 4,100,000,000   4,100,000,000   4,700,000,000
Equity Investment in BlackRock [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Preferred shares owned by corporation 13,600,000   13,600,000    
Equity Investment in China Construction Bank [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Common shares owned by corporation 25,600,000,000   25,600,000,000   25,600,000,000
Cost method investment ownership percentage 10.00%   10.00%   10.00%
Available for sale common shares owned by corporation 23,600,000,000   23,600,000,000    
Restricted common shares owned by corporation 2,000,000,000   2,000,000,000    
Cost of the investment 9,200,000,000   9,200,000,000   9,200,000,000
Carrying value of investments 19,600,000,000   19,600,000,000   19,700,000,000
Fair value of equity investment 20,500,000,000   20,500,000,000   20,800,000,000
Dividend income on CCB investment     837,000,000 535,000,000  
Reported Basis [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Held-to-maturity, at cost (fair value - $181 and $427) $ 181,000,000   $ 181,000,000