Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v2.4.0.8
Summary of Significant Accounting Policies (Details) (USD $)
In Billions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Accounting Policies [Line Items]    
Securities held as collateral, fair value $ 575.3 $ 513.2
Securities received as collateral, amount re-pledged and sold $ 361.5 $ 362.0
Derivatives Used for Hedge Accounting Purposes (Accounting Hedges):    
Terminated cash flow hedges, maximum length of time over which forecasted transactions are hedges 25 years  
Terminated cash flow hedges, maximum length of time over which forecasted transactions are hedged for substantial number 10 years  
For open or future cash flow hedges, maximum length of time over which forecasted transactions hedged 7 years  
Nonperforming Loans and Leases, Charge-Offs and Delinquencies:    
Period real estate secured loans placed on nonaccrual status and classified as nonperforming 90 days  
Outstanding balance of real estate secured loans charge-off period 180 days  
Personal property secured loans charge-off period 120 days  
Unsecured accounts in bankruptcy including credit cards, charge-off period 60 days  
Non-bankrupt credit card loans and unsecured consumer loans charge-off period 180 days  
Period secured products are written down to the collateral value 60 days  
Period commercial loans and leases placed on nonaccrual status and classified as nonperforming 90 days  
Period business card loans are charged-off 180 days  
Period for receipt of notification of bankruptcy filing 60 days  
Troubled Debt Restructuring:    
Period for sustained repayment performance 6 months  
Credit card loans and unsecured consumer loans charge-off in the month they become past due 120 days  
Commercial loans and leases modified in a TDR placed on nonaccrual status and reported as nonperforming 6 months  
Revenue Recognition:    
Period uncollected fees are written off for credit receivables 180 days  
Period uncollected fees are written off 60 days  
Building [Member]
    
Premises and Equipment:    
Premises and equipment, estimated useful lives P40Y  
Furniture and Equipment [Member]
    
Premises and Equipment:    
Premises and equipment, estimated useful lives P12Y  
Minimum [Member]
    
Revenue Recognition:    
Agreement terms with organizations the endorse loan and deposit products P2Y  
Maximum [Member]
    
Revenue Recognition:    
Agreement terms with organizations the endorse loan and deposit products P5Y  
Home Equity Line of Credit [Member]
    
Derivatives Used for Hedge Accounting Purposes (Accounting Hedges):    
Loss severity on loans in second lien position 100.00%