Annual report pursuant to Section 13 and 15(d)

Securities Securities - Certain Corporate and Strategic Investments (Details)

v2.4.0.6
Securities Securities - Certain Corporate and Strategic Investments (Details) (USD $)
Share data in Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
First Data Corporation [Member]
     
Equity Method Investments and Joint Ventures [Abstract]      
Equity Method Investment, Other than Temporary Impairment $ 1,100,000,000    
Equity Method Investments 3,400,000,000 4,700,000,000  
Common Stock [Member] | China Construction Bank [Member]
     
Cost Method Investments [Abstract]      
Gain (Loss) on Sale of Equity Investments 6,500,000,000   7,300,000,000
Investment Owned, Balance, Shares 2,000.0 25,600.0  
Cost method investment ownership percentage 1.00% 10.00%  
Cost Method Investment, Cost Basis 716,000,000 9,200,000,000  
Cost Method Investments 716,000,000 19,700,000,000  
Cost Method Investments, Fair Value Disclosure 1,400,000,000 20,800,000,000  
Dividends 836,000,000 535,000,000  
Preferred Stock [Member] | BlackRock, Inc. [Member]
     
Cost Method Investments [Abstract]      
Gain (Loss) on Sale of Equity Investments $ 377,000,000    
Investment Owned, Balance, Shares 13.6    
Cost method investment ownership percentage 7.00%