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Acquisitions/Divestitures (Narratives) (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2014
acquisitions
Dec. 31, 2013
Dec. 31, 2012
Acquisitions:      
Businesses acquired, number (in entities) 4    
Businesses acquired, aggregate cost $ 571    
Goodwill 31,568 31,184 29,247
Software
     
Acquisitions:      
Goodwill 21,487 21,121 20,405
Businesses acquired, privately held companies number 4    
Percentage of business acquired 100.00%    
Acquisitions
     
Acquisitions:      
Acquired intangible asset, weighted average useful life 6 years 10 months    
Expected percent of goodwill deductible for tax purposes 0.00%    
Total purchase price 571    
Goodwill 417    
Acquisitions | Software
     
Acquisitions:      
Goodwill $ 417