BENEFIT PLANS - Defined Contribution Plans (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Compensation and Retirement Disclosure [Abstract] | |||
| Defined contribution plan | $ 31,896 | $ 31,110 | $ 18,238 |
| Shares in Huntington common stock (in shares) | 13,076,164 | 12,883,333 | |
| Market value of Huntington common stock | $ 144,622 | $ 135,533 | |
| Dividends received on shares of Huntington stock | $ 3,076 | $ 2,694 | |
| X | ||||||||||
- Definition Defined Contribution Plan, Amount of Employer and Related Party Securities Included in Plan Assets No definition available.
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| X | ||||||||||
- Definition Defined Contribution Plan, Dividends Received on Employer and Related Party Securities Included in Plan Assets No definition available.
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| X | ||||||||||
- Definition Defined Contribution Plan, Number of Shares of Equity Securities Issued by Employer and Related Parties Included in Plan Assets No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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