Quarterly report pursuant to Section 13 or 15(d)

Fair Values of Assets and Liabilities (Non-recurring/fair values of financial instruments) (Details 5)

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Fair Values of Assets and Liabilities (Non-recurring/fair values of financial instruments) (Details 5) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2013
Carrying Amount [Member]
Dec. 31, 2012
Carrying Amount [Member]
Jun. 30, 2013
Fair Value [Member]
Dec. 31, 2012
Fair Value [Member]
Jun. 30, 2013
Level 1 [Member]
Fair Value [Member]
Dec. 31, 2012
Level 1 [Member]
Fair Value [Member]
Jun. 30, 2013
Level 2 [Member]
Fair Value [Member]
Dec. 31, 2012
Level 2 [Member]
Fair Value [Member]
Jun. 30, 2013
Level 3 [Member]
Fair Value [Member]
Dec. 31, 2012
Level 3 [Member]
Fair Value [Member]
Jun. 30, 2013
Total Estimated Fair Value [Member]
Fair Value [Member]
Dec. 31, 2012
Total Estimated Fair Value [Member]
Fair Value [Member]
Jun. 30, 2013
Nonrecurring Basis [Member]
Jun. 30, 2013
Nonrecurring Basis [Member]
Level 1 [Member]
Jun. 30, 2013
Nonrecurring Basis [Member]
Level 2 [Member]
Jun. 30, 2013
Nonrecurring Basis [Member]
Level 3 [Member]
Assets measured at fair value on a nonrecurring basis                                    
Fair value, Impaired loans                             $ 18,721 $ 0 $ 0 $ 18,721
Gain/(Losses), Impaired loans                             (5,458)      
Fair value, Accrued income and other assets                             21,066 0 0 21,066
Gain/(Losses), Accrued income and other assets                             (1,165)      
Financial Assets:                                    
Cash and short-term assets     1,069,621 1,333,727 1,069,621 1,333,727                        
Trading account securities 80,927 91,205 80,927 91,205 80,927 91,205                        
Loans held for sale 458,275 [1] 764,309 [1] 458,275 764,309 458,275 773,013 0 0 0 0 0 316,007 0 316,007        
Available-for-sale and other securities 6,815,658 7,566,175 6,815,658 7,566,175 6,815,658 7,566,175                        
Held-to-maturity securities, Total 2,172,229 1,743,876 2,172,229 1,743,876 2,166,749 1,794,105 0 0 2,166,749 1,794,105 0 0 2,166,749 1,794,105        
Net loans and direct financing leases 41,006,771 39,959,350 41,006,771 39,959,350 39,356,382 38,401,965 0 0 0 0 39,265,242 38,259,203 39,265,242 38,259,203        
Derivatives     248,782 385,697 248,782 385,697                        
Financial Liabilities:                                    
Deposits 46,331,434 46,252,683 46,331,434 46,252,683 46,415,586 46,330,715 0 0 40,542,678 39,136,127 5,872,908 7,194,588 46,415,586 46,330,715        
Short-term borrowings 630,405 589,814 630,405 589,814 623,551 584,671 0 0 0 0 623,551 584,671 623,551 584,671        
Federal Home Loan Bank advances 983,420 1,008,959 983,420 1,008,959 983,420 1,008,959                        
Other long term debt 155,126 158,784 155,126 158,784 154,578 156,719 0 0 0 2,124 154,578 154,595 154,578 156,719        
Subordinated notes 1,114,368 1,197,091 1,114,368 1,197,091 1,129,481 1,183,827 0 0 0 0 1,129,481 1,183,827 1,129,481 1,183,827        
Derivatives     $ 139,497 $ 152,188 $ 139,497 $ 152,188                        
[1] Amounts represent loans for which Huntington has elected the fair value option.