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 $)
Jun. 30, 2012
Dec. 31, 2011
Carrying and fair values of financial instruments    
Deposits $ 1,035,225,000,000 $ 1,033,041,000,000
Long-term debt 301,848,000,000 372,265,000,000
Carrying Value [Member]
   
Carrying and fair values of financial instruments    
Loans 840,415,000,000 870,520,000,000
Loans Held For Sale 13,289,000,000  
Deposits 1,035,225,000,000 1,033,041,000,000
Long-term debt 301,848,000,000 372,265,000,000
Commercial Unfunded Lending Commitments 1,500,000,000 2,000,000,000
Fair Value [Member]
   
Carrying and fair values of financial instruments    
Loans 837,515,000,000 843,392,000,000
Loans Held For Sale 13,264,000,000  
Deposits 1,035,624,000,000 1,033,248,000,000
Long-term debt 296,369,000,000 343,211,000,000
Commercial Unfunded Lending Commitments 6,100,000,000 7,100,000,000
Fair Value, Inputs, Level 2 [Member] | Fair Value [Member]
   
Carrying and fair values of financial instruments    
Loans 112,493,000,000  
Loans Held For Sale 9,128,000,000  
Deposits 1,035,624,000,000  
Long-term debt 293,981,000,000  
Fair Value, Inputs, Level 3 [Member] | Fair Value [Member]
   
Carrying and fair values of financial instruments    
Loans 725,022,000,000  
Loans Held For Sale 4,136,000,000  
Deposits     
Long-term debt $ 2,388,000,000