XML 83 R139.htm IDEA: XBRL DOCUMENT v2.4.0.6
Financial Derivatives (Derivatives Designated in GAAP Hedge Relationships - Cash Flow Hedges) (Details) (Cash Flow Hedging [Member], Interest Rate Contracts [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Derivatives, Fair Value [Line Items]    
Gain/ Loss on Derivatives Recognized in OCI (Effective Portion) $ 805 $ 948
Interest Income [Member]
   
Derivatives, Fair Value [Line Items]    
Gain Reclassified from Accumulated OCI into Income (Effective Portion) 455 339
Noninterest Income [Member]
   
Derivatives, Fair Value [Line Items]    
Gain Reclassified from Accumulated OCI into Income (Effective Portion) $ 43 $ 48