Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments (Details)

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Fair Value of Financial Instruments (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Carrying and fair values of financial instruments    
Deposits $ 1,063,307,000,000 $ 1,033,041,000,000
Long-term debt 286,534,000,000 372,265,000,000
Carrying Value [Member]
   
Carrying and fair values of financial instruments    
Loans 844,028,000,000 870,520,000,000
Loans Held For Sale 16,436,000,000  
Deposits 1,063,307,000,000 1,033,041,000,000
Long-term debt 286,534,000,000 372,265,000,000
Commercial Unfunded Lending Commitments 1,200,000,000 2,000,000,000
Fair Value [Member]
   
Carrying and fair values of financial instruments    
Loans 858,934,000,000 843,392,000,000
Loans Held For Sale 16,382,000,000  
Deposits 1,063,737,000,000 1,033,248,000,000
Long-term debt 289,013,000,000 343,211,000,000
Commercial Unfunded Lending Commitments 4,900,000,000 7,100,000,000
Fair Value, Inputs, Level 2 [Member] | Fair Value [Member]
   
Carrying and fair values of financial instruments    
Loans 108,849,000,000  
Loans Held For Sale 11,817,000,000  
Deposits 1,063,737,000,000  
Long-term debt 286,723,000,000  
Fair Value, Inputs, Level 3 [Member] | Fair Value [Member]
   
Carrying and fair values of financial instruments    
Loans 750,085,000,000  
Loans Held For Sale 4,565,000,000  
Deposits     
Long-term debt $ 2,290,000,000