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
 3 Months Ended
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Mar. 31, 2012
Carrying Amount [Member]
Dec. 31, 2011
Carrying Amount [Member]
Mar. 31, 2011
Carrying Amount [Member]
Mar. 31, 2012
Fair Value [Member]
Dec. 31, 2011
Fair Value [Member]
Mar. 31, 2011
Fair Value [Member]
Mar. 31, 2012
Level 1 [Member]
Fair Value [Member]
Dec. 31, 2011
Level 1 [Member]
Fair Value [Member]
Mar. 31, 2011
Level 1 [Member]
Fair Value [Member]
Mar. 31, 2012
Level 2 [Member]
Fair Value [Member]
Dec. 31, 2011
Level 2 [Member]
Fair Value [Member]
Mar. 31, 2011
Level 2 [Member]
Fair Value [Member]
Mar. 31, 2012
Level 3 [Member]
Fair Value [Member]
Dec. 31, 2011
Level 3 [Member]
Fair Value [Member]
Mar. 31, 2011
Level 3 [Member]
Fair Value [Member]
Mar. 31, 2012
Total Estimated Fair Value [Member]
Fair Value [Member]
Dec. 31, 2011
Total Estimated Fair Value [Member]
Fair Value [Member]
Mar. 31, 2011
Total Estimated Fair Value [Member]
Fair Value [Member]
Mar. 31, 2012
Nonrecurring Basis [Member]
Mar. 31, 2012
Nonrecurring Basis [Member]
Level 1 [Member]
Mar. 31, 2012
Nonrecurring Basis [Member]
Level 2 [Member]
Mar. 31, 2012
Nonrecurring Basis [Member]
Level 3 [Member]
Assets measured at fair value on a nonrecurring basis                                                  
Fair value, Impaired loans                                           $ 7,327 $ 0 $ 0 $ 7,327
Gain/(Losses), Impaired loans                                           (2,069)      
Fair value, Accrued income and other assets                                           48,747 0 0 48,747
Gain/(Losses), Accrued income and other assets                                           (543)      
Financial Assets:                                                  
Cash and short-term assets       1,263,190 1,206,911 1,338,819 1,263,190 1,206,911 1,338,819                                
Trading account securities 59,663 45,899 164,489 59,663 45,899 164,489 59,663 45,899 164,489                                
Loans held for sale 310,383 [1] 1,618,391 [1] 164,282 [1] 310,383 1,618,391 164,282 310,383 1,638,276 164,282 0 0 0 0 0 0 0 1,291,755 0 0 1,291,755 0        
Available-for-sale and other securities 8,909,733 8,078,014 9,322,434 8,909,733 8,078,014 9,322,434 8,909,733 8,078,014 9,322,434                                
Held-to-maturity securities, Total 621,798 640,551 0 621,798 640,551 0 642,871 660,186 0 0 0 0 642,871 660,186 0 0 0 0 642,871 660,186 0        
Net loans and direct financing leases 39,765,473 37,958,955 37,112,610 39,765,473 37,958,955 37,112,610 38,347,021 36,669,829 35,782,739 0 0 0 0 0 0 37,575,683 36,373,579 35,323,888 37,575,683 36,373,579 35,323,888        
Derivatives       347,657 403,002 251,205 347,657 403,002 251,205                                
Financial Liabilities:                                                  
Deposits 45,008,964 43,279,625 41,366,487 (45,008,964) (43,279,625) (41,366,487) (45,116,447) (43,406,125) (41,554,364) 0 0 0 (36,216,305) (35,049,194) (31,084,419) (8,187,600) (8,356,931) (10,469,945) (44,403,905) (43,406,125) (41,554,364)        
Short-term borrowings 1,504,086 1,441,092 2,051,258 (1,504,086) (1,441,092) (2,051,258) (1,487,965) (1,429,717) (2,012,436) 0 0 0 0 0 0 (1,487,965) (1,429,717) (2,012,436) (1,487,965) (1,429,717) (2,012,436)        
Federal Home Loan Bank advances 56,938 362,972 21,379 (56,938) (362,972) (21,379) (56,938) (362,972) (21,379)                                
Other long term debt 1,058,167 [2] 1,231,517 [2] 1,900,555 [2] (1,058,167) (1,231,517) (1,900,555) (1,059,824) (1,232,975) (1,914,565) 0 0 0 (829,353) (937,959) (1,353,467) (153,780) (171,977) (266,193) (983,133) (1,109,936) (1,619,660)        
Subordinated notes 1,494,263 1,503,368 1,487,566 (1,494,263) (1,503,368) (1,487,566) (1,424,931) (1,410,392) (1,406,068) 0 0 0 0 0 0 (1,424,931) (1,410,392) (1,406,068) (1,424,931) (1,410,392) (1,406,068)        
Derivatives       $ (236,928) $ (265,316) $ (192,569) $ (236,928) $ (265,316) $ (192,569)                                
[1] Amounts represent loans for which Huntington has elected the fair value option.
[2] Amounts represent certain assets and liabilities of a consolidated VIE for which Huntington has elected the fair value option.