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

Loans and Leases and Allowance For Credit Losses (Textuals) (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2015 USD ($) D	Dec. 31, 2014 USD ($)
Loans and Leases (Textuals)
Amount of security for borrowing and advances \| $	$ 17,200,000
All loans with an outstanding balance which evaluated on quarterly basis for impairment \| $	1,000
Amount guaranteed by U.S. Government \| $	$ 50,640	$ 55,012
Redefault status number of days	90
Aggregate amount of net unamortized deferred loan origination fees and net unearned income \| $	$ 300,500	$ 178,700
Home equity secured by first-lien other [Member]
Loans and Leases (Textuals)
Nonaccrual status number of days past due	150
Loans charged off or written down past due	150
Home equity secured by junior-lien [Member]
Loans and Leases (Textuals)
Nonaccrual status number of days past due	120
Loans charged off or written down past due	120
Residential Mortgage [Member]
Loans and Leases (Textuals)
Nonaccrual status number of days past due	150
Loans charged off or written down past due	150
Commercial and Industrial and Commercial Real Estate [Member]
Loans and Leases (Textuals)
Nonaccrual status number of days past due	90
Loans charged off or written down past due	90
Automobile and other consumer loans [Member]
Loans and Leases (Textuals)
Loans charged off or written down past due	120