v2.4.0.6
Intangible Assets, Allocation of Goodwill to Operating Segments (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Intangible Assets [Abstract]    
Goodwill, Beginning Balance $ 25,115 $ 24,770
Reduction in goodwill related to divested businesses   (11)
Goodwill from business combinations 522 356
Goodwill, Ending Balance 25,637 25,115
Wealth Brokerage and Retirement [Member]
   
Intangible Assets [Abstract]    
Goodwill, Beginning Balance 371 373
Reduction in goodwill related to divested businesses   (2)
Goodwill from business combinations 0 0
Goodwill, Ending Balance 371 371
Wholesale Banking [Member]
   
Intangible Assets [Abstract]    
Goodwill, Beginning Balance 6,820 6,475
Reduction in goodwill related to divested businesses   (9)
Goodwill from business combinations 524 354
Goodwill, Ending Balance 7,344 6,820
Community Banking [Member]
   
Intangible Assets [Abstract]    
Goodwill, Beginning Balance 17,924 17,922
Reduction in goodwill related to divested businesses   0
Goodwill from business combinations (2) 2
Goodwill, Ending Balance $ 17,922 $ 17,924