Huntington Bancshares Incorporated Quarterly report pursuant to Section 13 or 15(d)

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES (Textuals) (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($) securitization	Dec. 31, 2014 USD ($)
Loans and Leases (Textuals)
Loans net premium	$ 246,600	$ 246,600	$ 230,200
Amount of security for borrowing and advances	17,200,000	$ 17,200,000
Number of days considered past due		30 days
All loans with an outstanding balance which evaluated on quarterly basis for impairment	1,000
Amount guaranteed by U.S. Government	$ 50,643	$ 50,643	$ 55,012
Redefault status number of days	90 days	90 days
Number of months defined for subsequent redefault		12 months
Number of securitizations \| securitization		2
Commercial and Industrial
Loans and Leases (Textuals)
Amount of security for borrowing and advances	$ 200,000	$ 200,000
Loans charged off or written down past due	90 days
Home equity secured by junior-lien
Loans and Leases (Textuals)
Loans charged off or written down past due	120 days
Nonaccrual status number of days past due	120 days
Residential Mortgage
Loans and Leases (Textuals)
Loans charged off or written down past due	150 days
Nonaccrual status number of days past due	150 days