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

Derivative Financial Instruments (Cash flow hedges) (Details 2)

Derivative Financial Instruments (Cash flow hedges) (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Cash flow hedging [Member]
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	$ (539)	$ 17,714	$ 17,756	$ 19,537
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	138	813	261	3,705
Hedged Other long term debt [Member] \| Interest expense subordinated notes and other long term debt [Member]
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	7,382	(9,948)	(12,263)	(3,474)
Hedged Subordinated notes [Member] \| Interest expense subordinated notes and other long term debt [Member]
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	7,362	(3,015)	4,131	(4,081)
Hedged Deposits [Member] \| Interest expense deposits [Member]
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	236	228	450	494
FHLB Advances [Member] \| Interest expense other borrowings [Member] \| Cash flow hedging [Member]
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	0	0	0	0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	0	0	0	0
Loan [Member] \| Interest and fee income loans and leases [Member] \| Cash flow hedging [Member]
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	(539)	17,714	17,756	19,537
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	118	895	250	3,787
Investment securities [Member] \| Interest and fee income investment securities [Member] \| Cash flow hedging [Member]
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	0	0	0	0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	20	(82)	11	(82)
Deposits [Member] \| Interest expense deposits [Member]
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	(245)	(238)	(458)	(505)
Deposits [Member] \| Interest expense deposits [Member] \| Cash flow hedging [Member]
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	0	0	0	0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	0	0	0	0
Subordinated notes \| Interest expense subordinated notes and other long term debt [Member]
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	(7,362)	3,015	(4,131)	4,081
Subordinated notes \| Interest expense subordinated notes and other long term debt [Member] \| Cash flow hedging [Member]
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	0	0	0	0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	0	0	0	0
Other long-term debt \| Interest expense subordinated notes and other long term debt [Member]
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	(8,129)	10,303	11,896	6,252
Other long-term debt \| Interest expense subordinated notes and other long term debt [Member] \| Cash flow hedging [Member]
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	0	0	0	0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	$ 0	$ 0	$ 0	$ 0