Quarterly report pursuant to Section 13 or 15(d)

Securities - Certain Corporate and Strategic Investments (Details)

v2.4.0.6
Securities - Certain Corporate and Strategic Investments (Details) (USD $)
Share data in Billions, unless otherwise specified
Dec. 31, 2010
Mar. 31, 2012
First Data Corporation [Member]
Dec. 31, 2011
First Data Corporation [Member]
Mar. 31, 2012
Common Stock [Member]
China Construction Bank [Member]
Dec. 31, 2011
Common Stock [Member]
China Construction Bank [Member]
Cost Method Investments [Abstract]          
Investment Owned, Balance, Shares       2.0  
Cost method investment ownership percentage       1.00%  
Cost Method Investment, Cost Basis       $ 716,000,000  
Cost Method Investments, Fair Value Disclosure       1,500,000,000 1,400,000,000
Equity Method Investment, Ownership Percentage 49.00% 0.00%      
Equity Method Investments and Joint Ventures [Abstract]          
Equity Method Investments   $ 3,300,000,000 $ 3,400,000,000