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Details of Certain Consolidated Statements of Income Lines (Details 1) (USD $)
In Millions
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Component of Other Income, Nonoperating [Line Items]        
Other $ 537 $ 486 $ 1,012 $ 911
Global Network Services Partner Revenues [Member]
       
Component of Other Income, Nonoperating [Line Items]        
Other 156 133 302 247
Realized Gain Loss On Sale Of Investments [Member]
       
Component of Other Income, Nonoperating [Line Items]        
Other 0 (5) 0 (4)
Other revenues [Member]
       
Component of Other Income, Nonoperating [Line Items]        
Other $ 381 $ 358 $ 710 $ 668