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

FAIR VALUES OF ASSETS AND LIABILITIES - Fair Value Option (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Aug. 16, 2016	Dec. 31, 2015
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for investment	$ 89,190	$ 56,000	$ 34,637
Loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale, fair value carrying amount	517,591		337,577
Loans held for sale, aggregate unpaid principal	494,092		326,802
Difference	23,499		10,775
Loans held for investment
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for investment	89,190		34,637
Loans held for investment, aggregate unpaid principal	100,283		35,385
Difference	(11,093)		(748)
90 or more days \| Loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale, fair value carrying amount	0		1,268
Loans held for sale, aggregate unpaid principal	0		1,294
Difference	0		(26)
90 or more days \| Loans held for investment
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for investment	11,837		428
Loans held for investment, aggregate unpaid principal	15,636		497
Difference	$ (3,799)		$ (69)