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Goodwill (Tables)
12 Months Ended
Dec. 31, 2015
Goodwill  
Changes in the Net Carrying Amount of Goodwill by Reporting Segment
       
Changes in the net carrying amount of goodwill, by reporting unit, for the years ended December 31, 2015 and 2014 were as follows:
       
  CommercialBranchConsumerInvestment 
($ in millions) BankingBankingLendingAdvisorsTotal
Net carrying value as of December 31, 2013$6131,655 - 1482,416
Acquisition activity - - - - -
Net carrying value as of December 31, 2014$6131,655 - 1482,416
Acquisition activity  - - - - -
Net carrying value as of December 31, 2015$6131,655 - 1482,416