v2.4.0.6
Intangible Assets, Allocation of Goodwill to Operating Segments (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Intangible Assets [Abstract]    
Goodwill, Beginning Balance $ 24,770 $ 24,812
Reduction in goodwill related to divested businesses (11)  
Goodwill from business combinations 356 (42)
Goodwill, Ending Balance 25,115 24,770
Wealth Brokerage and Retirement [Member]
   
Intangible Assets [Abstract]    
Goodwill, Beginning Balance 373 373
Reduction in goodwill related to divested businesses (2)  
Goodwill from business combinations 0 0
Goodwill, Ending Balance 371 373
Wholesale Banking [Member]
   
Intangible Assets [Abstract]    
Goodwill, Beginning Balance 6,475 6,465
Reduction in goodwill related to divested businesses (9)  
Goodwill from business combinations 354 10
Goodwill, Ending Balance 6,820 6,475
Community Banking [Member]
   
Intangible Assets [Abstract]    
Goodwill, Beginning Balance 17,922 17,974
Reduction in goodwill related to divested businesses 0  
Goodwill from business combinations 2 (52)
Goodwill, Ending Balance $ 17,924 $ 17,922