Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS (Details Textuals)

v3.3.1.900
DERIVATIVE FINANCIAL INSTRUMENTS (Details Textuals) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Derivative [Line Items]          
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net $ 15,600   $ 15,600    
Derivative Financial Instruments (Textuals) [Abstract]          
Purchase of interest rate caps and derivative financial instruments, notional value 14,127,100   14,127,100   $ 600,000
Total notional amount corresponds to trading assets, fair value 2,900   2,900    
Credit risks from interest rate swaps used for trading purposes 272,000   272,000   219,300
Additional Derivative Financial Instruments (Textuals) [Abstract]          
Aggregate credit risk, net of collateral 15,900   15,900   19,500
Investment securities and cash collateral pledged by Huntington 99,200   99,200    
Investment securities and cash collateral pledged to Huntington 123,800   123,800    
Increase (decrease) to net interest income due to derivative adjustment 28,300 $ 24,200 79,200 $ 73,400  
Swap          
Derivative Financial Instruments (Textuals) [Abstract]          
Total derivative liabilities 400   400    
Derivative used in trading activity          
Derivative Financial Instruments (Textuals) [Abstract]          
Net derivative asset (liability) 75,800   75,800   74,400
Derivative financial instruments used by Huntington on behalf of customers including offsetting derivatives, notional value 14,700,000   14,700,000   14,400,000
Derivative used in Mortgage Banking Activities          
Derivative Financial Instruments (Textuals) [Abstract]          
Net derivative asset (liability) 2,773   2,773   80
Purchase of interest rate caps and derivative financial instruments, notional value 500,000   500,000    
Gains (losses) related to derivative instruments Included in total MSR 5,700 $ (200) 1,900 $ 3,800  
Total derivative liabilities 5,600   5,600   4,019
Other Credit Derivatives          
Derivative Financial Instruments (Textuals) [Abstract]          
Derivative Asset, Notional Amount $ 397,400   $ 397,400   $ 456,700