Huntington Bancshares Incorporated Quarterly report pursuant to Section 13 or 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	Sep. 30, 2012	Dec. 31, 2011
Trust Preferred Securities Data [Line Items]
Amortized Cost	$ 307,692	$ 342,867
Fair Value	182,059	194,062
Available For Sales Securities Gross Unrealized Losses	127,731	165,080
Pooled Trust Preferred [Member]
Trust Preferred Securities Data [Line Items]
Par Value	267,805
Amortized Cost	197,382
Fair Value	78,926
Available For Sales Securities Gross Unrealized Losses	(118,456)
Pooled Trust Preferred [Member] \| Alesco II [Member]
Trust Preferred Securities Data [Line Items]
Par Value	41,645
Amortized Cost	30,653
Fair Value	9,486
Available For Sales Securities Gross Unrealized Losses	(21,167)
Lowest Credit Rating	C
Number of Issuers Currently Performing	31
Number of Issuers Currently Remaining	36
Actual Deferrals and Defaults as Percent of Original Collateral	1100.00%
Expected Defaults as Percent of Remaining Performing Collateral	1500.00%
Excess Subordination	0.00%
Pooled Trust Preferred [Member] \| Alesco IV [Member]
Trust Preferred Securities Data [Line Items]
Par Value	21,407
Amortized Cost	8,242
Fair Value	471
Available For Sales Securities Gross Unrealized Losses	(7,771)
Lowest Credit Rating	C
Number of Issuers Currently Performing	29
Number of Issuers Currently Remaining	40
Actual Deferrals and Defaults as Percent of Original Collateral	1800.00%
Expected Defaults as Percent of Remaining Performing Collateral	2400.00%
Excess Subordination	0.00%
Pooled Trust Preferred [Member] \| ICONS [Member]
Trust Preferred Securities Data [Line Items]
Par Value	20,000
Amortized Cost	20,000
Fair Value	12,440
Available For Sales Securities Gross Unrealized Losses	(7,560)
Lowest Credit Rating	BB
Number of Issuers Currently Performing	23
Number of Issuers Currently Remaining	24
Actual Deferrals and Defaults as Percent of Original Collateral	300.00%
Expected Defaults as Percent of Remaining Performing Collateral	1400.00%
Excess Subordination	4500.00%
Pooled Trust Preferred [Member] \| I-Pre TSL II [Member]
Trust Preferred Securities Data [Line Items]
Par Value	30,803
Amortized Cost	30,723
Fair Value	21,053
Available For Sales Securities Gross Unrealized Losses	(9,670)
Lowest Credit Rating	A
Number of Issuers Currently Performing	23
Number of Issuers Currently Remaining	25
Actual Deferrals and Defaults as Percent of Original Collateral	500.00%
Expected Defaults as Percent of Remaining Performing Collateral	1300.00%
Excess Subordination	7400.00%
Pooled Trust Preferred [Member] \| MM Comm III [Member]
Trust Preferred Securities Data [Line Items]
Par Value	7,402
Amortized Cost	7,072
Fair Value	3,878
Available For Sales Securities Gross Unrealized Losses	(3,194)
Lowest Credit Rating	B
Number of Issuers Currently Performing	5
Number of Issuers Currently Remaining	10
Actual Deferrals and Defaults as Percent of Original Collateral	700.00%
Expected Defaults as Percent of Remaining Performing Collateral	1300.00%
Excess Subordination	3200.00%
Pooled Trust Preferred [Member] \| Pre TSL IX [Member]
Trust Preferred Securities Data [Line Items]
Par Value	5,000
Amortized Cost	3,955
Fair Value	1,351
Available For Sales Securities Gross Unrealized Losses	(2,604)
Lowest Credit Rating	C
Number of Issuers Currently Performing	32
Number of Issuers Currently Remaining	47
Actual Deferrals and Defaults as Percent of Original Collateral	2200.00%
Expected Defaults as Percent of Remaining Performing Collateral	1300.00%
Excess Subordination	500.00%
Pooled Trust Preferred [Member] \| Pre TSL X [Member]
Trust Preferred Securities Data [Line Items]
Par Value	18,157
Amortized Cost	9,914
Fair Value	4,979
Available For Sales Securities Gross Unrealized Losses	(4,935)
Lowest Credit Rating	C
Number of Issuers Currently Performing	34
Number of Issuers Currently Remaining	51
Actual Deferrals and Defaults as Percent of Original Collateral	3100.00%
Expected Defaults as Percent of Remaining Performing Collateral	1700.00%
Excess Subordination	0.00%
Pooled Trust Preferred [Member] \| Pre TSL XI [Member]
Trust Preferred Securities Data [Line Items]
Par Value	25,601
Amortized Cost	22,307
Fair Value	7,923
Available For Sales Securities Gross Unrealized Losses	(14,384)
Lowest Credit Rating	C
Number of Issuers Currently Performing	41
Number of Issuers Currently Remaining	62
Actual Deferrals and Defaults as Percent of Original Collateral	2900.00%
Expected Defaults as Percent of Remaining Performing Collateral	1700.00%
Excess Subordination	0.00%
Pooled Trust Preferred [Member] \| Pre TSL XIII [Member]
Trust Preferred Securities Data [Line Items]
Par Value	28,790
Amortized Cost	22,702
Fair Value	7,566
Available For Sales Securities Gross Unrealized Losses	(15,136)
Lowest Credit Rating	C
Number of Issuers Currently Performing	40
Number of Issuers Currently Remaining	63
Actual Deferrals and Defaults as Percent of Original Collateral	3500.00%
Expected Defaults as Percent of Remaining Performing Collateral	2800.00%
Excess Subordination	100.00%
Pooled Trust Preferred [Member] \| Reg Diversified [Member]
Trust Preferred Securities Data [Line Items]
Par Value	25,500
Amortized Cost	6,908
Fair Value	365
Available For Sales Securities Gross Unrealized Losses	(6,543)
Lowest Credit Rating	D
Number of Issuers Currently Performing	23
Number of Issuers Currently Remaining	44
Actual Deferrals and Defaults as Percent of Original Collateral	4600.00%
Expected Defaults as Percent of Remaining Performing Collateral	2000.00%
Excess Subordination	0.00%
Pooled Trust Preferred [Member] \| Soloso [Member]
Trust Preferred Securities Data [Line Items]
Par Value	12,500
Amortized Cost	3,906
Fair Value	554
Available For Sales Securities Gross Unrealized Losses	(3,352)
Lowest Credit Rating	C
Number of Issuers Currently Performing	40
Number of Issuers Currently Remaining	65
Actual Deferrals and Defaults as Percent of Original Collateral	3000.00%
Expected Defaults as Percent of Remaining Performing Collateral	2000.00%
Excess Subordination	0.00%
Pooled Trust Preferred [Member] \| Tropic III [Member]
Trust Preferred Securities Data [Line Items]
Par Value	31,000
Amortized Cost	31,000
Fair Value	8,860
Available For Sales Securities Gross Unrealized Losses	$ (22,140)
Lowest Credit Rating	CC
Number of Issuers Currently Performing	24
Number of Issuers Currently Remaining	43
Actual Deferrals and Defaults as Percent of Original Collateral	3600.00%
Expected Defaults as Percent of Remaining Performing Collateral	2500.00%
Excess Subordination	2700.00%