Huntington Bancshares Incorporated Annual report pursuant to Section 13 and 15(d)

Available-for-Sale and Other Securities (Trust Preferred) (Details 3)

Available-for-Sale and Other Securities (Trust Preferred) (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Trust Preferred Securities Data [Line Items]
Amortized Cost	$ 182,924	$ 212,968
Fair Value	124,664	133,240
Total investment securities, Unrealized Gross Losses	(92,770)	(152,696)
Pooled Trust Preferred [Member]
Trust Preferred Securities Data [Line Items]
Par Value	193,597	214,419
Amortized Cost	139,194	161,730
Fair Value	82,738	84,136
Total investment securities, Unrealized Gross Losses	(56,456)	(77,594)
Pooled Trust Preferred [Member] \| Alesco II [Member]
Trust Preferred Securities Data [Line Items]
Par Value	41,646
Amortized Cost	28,834
Fair Value	16,758
Total investment securities, Unrealized Gross Losses	(12,076)
Number of Issuers Currently Performing	12,076
Number of Issuers Currently Remaining
Actual Deferrals and Defaults as Percent of Original Collateral
Expected Defaults as Percent of Remaining Performing Collateral
Excess Subordination
Pooled Trust Preferred [Member] \| ICONS [Member]
Trust Preferred Securities Data [Line Items]
Par Value	19,837
Amortized Cost	19,837
Fair Value	15,786
Total investment securities, Unrealized Gross Losses	(4,051)
Number of Issuers Currently Performing	4,051
Number of Issuers Currently Remaining
Actual Deferrals and Defaults as Percent of Original Collateral
Expected Defaults as Percent of Remaining Performing Collateral
Excess Subordination
Pooled Trust Preferred [Member] \| MM Comm III [Member]
Trust Preferred Securities Data [Line Items]
Par Value	5,584
Amortized Cost	5,335
Fair Value	4,418
Total investment securities, Unrealized Gross Losses	(917)
Number of Issuers Currently Performing	917
Number of Issuers Currently Remaining
Actual Deferrals and Defaults as Percent of Original Collateral
Expected Defaults as Percent of Remaining Performing Collateral
Excess Subordination
Pooled Trust Preferred [Member] \| Pre TSL IX [Member]
Trust Preferred Securities Data [Line Items]
Par Value	5,000
Amortized Cost	3,955
Fair Value	2,403
Total investment securities, Unrealized Gross Losses	(1,552)
Number of Issuers Currently Performing	1,552
Number of Issuers Currently Remaining
Actual Deferrals and Defaults as Percent of Original Collateral
Expected Defaults as Percent of Remaining Performing Collateral
Excess Subordination
Pooled Trust Preferred [Member] \| Pre TSL XI [Member]
Trust Preferred Securities Data [Line Items]
Par Value	25,000
Amortized Cost	20,632
Fair Value	12,248
Total investment securities, Unrealized Gross Losses	(8,384)
Number of Issuers Currently Performing	8,384
Number of Issuers Currently Remaining
Actual Deferrals and Defaults as Percent of Original Collateral
Expected Defaults as Percent of Remaining Performing Collateral
Excess Subordination
Pooled Trust Preferred [Member] \| Pre TSL XIII [Member]
Trust Preferred Securities Data [Line Items]
Par Value	27,530
Amortized Cost	20,252
Fair Value	13,302
Total investment securities, Unrealized Gross Losses	(6,950)
Number of Issuers Currently Performing	6,950
Number of Issuers Currently Remaining
Actual Deferrals and Defaults as Percent of Original Collateral
Expected Defaults as Percent of Remaining Performing Collateral
Excess Subordination
Pooled Trust Preferred [Member] \| Reg Diversified [Member]
Trust Preferred Securities Data [Line Items]
Par Value	25,500
Amortized Cost	6,908
Fair Value	1,142
Total investment securities, Unrealized Gross Losses	(5,766)
Number of Issuers Currently Performing	5,766
Number of Issuers Currently Remaining
Actual Deferrals and Defaults as Percent of Original Collateral
Expected Defaults as Percent of Remaining Performing Collateral
Excess Subordination
Pooled Trust Preferred [Member] \| Soloso [Member]
Trust Preferred Securities Data [Line Items]
Par Value	12,500
Amortized Cost	2,440
Fair Value	368
Total investment securities, Unrealized Gross Losses	(2,072)
Number of Issuers Currently Performing	2,072
Number of Issuers Currently Remaining
Actual Deferrals and Defaults as Percent of Original Collateral
Expected Defaults as Percent of Remaining Performing Collateral
Excess Subordination
Pooled Trust Preferred [Member] \| Tropic III [Member]
Trust Preferred Securities Data [Line Items]
Par Value	31,000
Amortized Cost	31,001
Fair Value	16,313
Total investment securities, Unrealized Gross Losses	$ (14,688)
Number of Issuers Currently Performing	14,688
Number of Issuers Currently Remaining
Actual Deferrals and Defaults as Percent of Original Collateral
Expected Defaults as Percent of Remaining Performing Collateral
Excess Subordination