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Intangible Assets Including Goodwill: (Details 2) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Future amortization expense, by year  
2012 (for Q4) $ 327
2013 1,105
2014 778
2015 487
2016 398
Capitalized software
 
Future amortization expense, by year  
2012 (for Q4) 145
2013 438
2014 213
2015 50
Acquired intangibles
 
Future amortization expense, by year  
2012 (for Q4) 183
2013 667
2014 564
2015 437
2016 $ 398