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Goodwill (Tables)
9 Months Ended
Sep. 30, 2012
Schedule of Goodwill [Table Text Block]
Changes in the net carrying amount of goodwill, by reporting unit, for the nine months ended September 30, 2012 and 2011 were as follows:
       
  CommercialBranchConsumerInvestment 
($ in millions) BankingBankingLendingAdvisorsTotal
Net carrying value as of December 31, 2011$6131,656 - 1482,417
Acquisition activity -- - - -
Net carrying value as of September 30, 2012$6131,656 - 1482,417
       
Net carrying value as of December 31, 2010 6131,656 - 1482,417
Acquisition activity  - - - - -
Net carrying value as of September 30, 2011$6131,656 - 1482,417