v2.4.0.8
Intangible Assets (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Dec. 31, 2011
Amortized intangible assets:        
Gross carrying value $ 18,437 $ 18,300    
Accumulated amortization (10,750) (9,873)    
Net carrying Value 7,687 8,427    
Unamortized intangible assets:        
MSRs (carried at fair value) 14,185 11,538    
Goodwill 25,637 25,637 25,406 25,115
Trademark 14 14    
Amortized MSRs [Member]
       
Amortized intangible assets:        
Gross carrying value 2,457 2,317    
Accumulated amortization (1,281) (1,157)    
Net carrying Value 1,176 1,160    
Core deposit intangibles [Member]
       
Amortized intangible assets:        
Gross carrying value 12,834 12,836    
Accumulated amortization (7,540) (6,921)    
Net carrying Value 5,294 5,915    
Customer Relationships And Other [Member]
       
Amortized intangible assets:        
Gross carrying value 3,146 3,147    
Accumulated amortization (1,929) (1,795)    
Net carrying Value $ 1,217 $ 1,352