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Guarantees and Contingent Liabilities (Tables)
 6 Months Ended
Jun. 30, 2011
Guarantees and Contingent Liabilities [Abstract]  
Summary of other guarantees and contingent liabilities
                 
          Maximum
 		 
          Potential
 		 
    Carrying
 		    Future
 		 
(Dollars in Millions)   Amount     Payments  
Standby letters of credit
  $ 100     $ 19,290  
Third-party borrowing arrangements
    –       129  
Securities lending indemnifications
    –       9,114  
Asset sales (a)
    241       1,903  
Merchant processing
    74       78,715  
Contingent consideration arrangements
    5       5  
Minimum revenue guarantees
    24       37  
Other
    53       8,924  
                 
(a) The maximum potential future payments does not include loan sales where the Company provides standard representations and warranties to the buyer against losses related to loan underwriting documentation. For these types of loan sales, the maximum potential future payments are not readily determinable because the Company’s obligation under these agreements depends upon the occurrence of future events.