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

AVAILABLE-FOR-SALE AND OTHER SECURITIES - Collateralized Debt Obligation (Details)

AVAILABLE-FOR-SALE AND OTHER SECURITIES - Collateralized Debt Obligation (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Unrealized Gross Losses	$ (77,196)	$ (83,651)
Pooled Trust Preferred
Schedule of Available-for-sale Securities [Line Items]
Par Value	137,575	179,574
Amortized Cost	101,913	131,911
Fair Value	73,809	100,338
Unrealized Gross Losses	(28,104)	$ (31,654)
Pooled Trust Preferred \| ICONS
Schedule of Available-for-sale Securities [Line Items]
Par Value	18,912
Amortized Cost	18,912
Fair Value	15,228
Unrealized Gross Losses	$ (3,684)
Actual Deferrals and Defaults as Percent of Original Collateral	7.00%
Expected Defaults as Percent of Remaining Performing Collateral	14.00%
Excess Subordination	52.00%
Pooled Trust Preferred \| MM Comm III
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 4,633
Amortized Cost	4,426
Fair Value	3,553
Unrealized Gross Losses	$ (873)
Actual Deferrals and Defaults as Percent of Original Collateral	5.00%
Expected Defaults as Percent of Remaining Performing Collateral	6.00%
Excess Subordination	34.00%
Pooled Trust Preferred \| Pre TSL IX
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 5,000
Amortized Cost	3,955
Fair Value	3,155
Unrealized Gross Losses	$ (800)
Actual Deferrals and Defaults as Percent of Original Collateral	18.00%
Expected Defaults as Percent of Remaining Performing Collateral	10.00%
Excess Subordination	8.00%
Pooled Trust Preferred \| Pre TSL XI
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 25,000
Amortized Cost	19,733
Fair Value	15,223
Unrealized Gross Losses	$ (4,510)
Actual Deferrals and Defaults as Percent of Original Collateral	12.00%
Expected Defaults as Percent of Remaining Performing Collateral	7.00%
Excess Subordination	14.00%
Pooled Trust Preferred \| Pre TSL XIII
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 27,530
Amortized Cost	19,277
Fair Value	16,524
Unrealized Gross Losses	$ (2,753)
Actual Deferrals and Defaults as Percent of Original Collateral	10.00%
Expected Defaults as Percent of Remaining Performing Collateral	10.00%
Excess Subordination	28.00%
Pooled Trust Preferred \| Reg Diversified
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 25,500
Amortized Cost	4,610
Fair Value	1,749
Unrealized Gross Losses	$ (2,861)
Actual Deferrals and Defaults as Percent of Original Collateral	33.00%
Expected Defaults as Percent of Remaining Performing Collateral	7.00%
Excess Subordination	0.00%
Pooled Trust Preferred \| Tropic III
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 31,000
Amortized Cost	31,000
Fair Value	18,377
Unrealized Gross Losses	$ (12,623)
Actual Deferrals and Defaults as Percent of Original Collateral	16.00%
Expected Defaults as Percent of Remaining Performing Collateral	7.00%
Excess Subordination	39.00%