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

Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments (Asset and liability management) (Details Add Info)

Derivative Financial Instruments (Asset and liability management) (Details Add Info) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014 Y
Additional information about the interest rate swaps used in companies Asset and Liability Management
Notional Amount Of Interest Rate Derivatives	$ 12,129,100
Average Maturity (years)	2.2
Fair Value	40,466
Weighted-Average Rate Receive	1.02%hban_WeightedAverageRateReceive
Weighted-Average Rate Pay	0.25%hban_WeightedAverageRatePay
Asset conversion swaps - Receive Fixed - Generic [Member]
Additional information about the interest rate swaps used in companies Asset and Liability Management
Notional Amount Of Interest Rate Derivatives	9,300,000
Average Maturity (years)	2
Fair Value	(17,078)
Weighted-Average Rate Receive	0.80%
Weighted-Average Rate Pay	0.24%
Asset Conversion Swaps Pay Fixed Generic [Member]
Additional information about the interest rate swaps used in companies Asset and Liability Management
Notional Amount Of Interest Rate Derivatives	0
Average Maturity (years)	0
Fair Value	0
Weighted-Average Rate Receive	0.00%
Weighted-Average Rate Pay	0.00%
Liability conversion swaps - Receive Fixed - Generic [Member]
Additional information about the interest rate swaps used in companies Asset and Liability Management
Notional Amount Of Interest Rate Derivatives	2,829,100
Average Maturity (years)	3.1
Fair Value	57,544
Weighted-Average Rate Receive	1.73%
Weighted-Average Rate Pay	0.25%
Liability Conversion Swaps - Receive Fixed - Callable
Additional information about the interest rate swaps used in companies Asset and Liability Management
Average Maturity (years)	0
Fair Value	$ 0
Weighted-Average Rate Receive	0.00%
Weighted-Average Rate Pay	0.00%