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

Quarterly report pursuant to Section 13 or 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	Mar. 31, 2015 Y
Additional information about the interest rate swaps used in companies Asset and Liability Management
Notional Amount Of Interest Rate Derivatives	$ 13,863,850
Average Maturity (years)	2.1
Fair Value	91,577
Weighted-Average Rate Receive	1.00%hban_WeightedAverageRateReceive
Weighted-Average Rate Pay	0.29%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	9,289,000
Average Maturity (years)	1.7
Fair Value	12,412
Weighted-Average Rate Receive	0.80%
Weighted-Average Rate Pay	0.26%
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	745,750
Average Maturity (years)	1.6
Fair Value	(1,422)
Weighted-Average Rate Receive	0.00%
Weighted-Average Rate Pay	0.79%
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	3,829,100
Average Maturity (years)	3.2
Fair Value	80,587
Weighted-Average Rate Receive	1.67%
Weighted-Average Rate Pay	0.27%
Liability Conversion Swaps - Receive Fixed - Callable
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%