v2.4.0.6
Loans and Allowance for Credit Losses, Impaired Loans, Average Recorded Investment and Interest Income (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment $ 29,971 $ 27,794
Recognized interest income 382 309
Interest Income On Impaired Loans [Abstract]    
Interest income, cash basis of accounting 123 49
Interest income, other 259 260
Total Commercial [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 7,704 10,313
Recognized interest income 70 66
Commercial and Industrial Loans [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 1,943 2,888
Recognized interest income 26 39
Commercial Real Estate Mortgage [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 4,421 5,135
Recognized interest income 32 17
Commercial Real Estate Construction [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 1,271 2,197
Recognized interest income 12 10
Lease Financing [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 37 63
Recognized interest income 0 0
Foreign Loans [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 32 30
Recognized interest income 0 0
Total Consumer [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 22,267 17,481
Recognized interest income 312 243
Real estate 1-4 family first mortgage [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 18,944 14,501
Recognized interest income 251 189
Real estate 1-4 family junior lien mortgage [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 2,482 2,054
Recognized interest income 35 22
Credit Card [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 517 594
Recognized interest income 15 14
Automobile [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 298 309
Recognized interest income 10 18
Other revolving credit and installment [Member]
   
Impaired Loans, Average Recorded Investment [Abstract]    
Average recorded investment 26 23
Recognized interest income $ 1 $ 0