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

Loans sales and securitizations (Details Textuals) (USD $)	3 Months Ended		3 Months Ended				9 Months Ended		3 Months Ended		9 Months Ended
	Dec. 31, 2012	Jun. 30, 2012	Sep. 30, 2011 2011 Automobile Trust [Member]	Jun. 30, 2012 2012 Automobile Trust [Member]	Sep. 30, 2012 Residential Mortgage [Member]	Sep. 30, 2011 Residential Mortgage [Member]	Sep. 30, 2012 Residential Mortgage [Member]	Sep. 30, 2011 Residential Mortgage [Member]	Sep. 30, 2012 Automobile Loan [Member]	Sep. 30, 2011 Automobile Loan [Member]	Sep. 30, 2012 Automobile Loan [Member]	Sep. 30, 2011 Automobile Loan [Member]
Loans sales and securitizations (Textuals) [Abstract]
Total servicing fees included in mortgage banking income					$ 11,300,000	$ 12,100,000	$ 34,700,000	$ 37,100,000
Total servicing income on sold automobile loans									2,200,000	300,000	5,600,000	1,000,000
Total of automobile loans transferred in a securitization transaction			1,000,000,000	1,300,000,000
Gain or loss from sale of automobile loans in securitizations	17,000,000			23,000,000
Net proceeds received in securitization transaction				1,300,000,000
Total automobile loans transferred to held for sale for securitization		$ 1,300,000,000