Quarterly report pursuant to Section 13 or 15(d)

Variable Interest Entities (Trust preferred Securities) (Details 1)

v2.4.0.8
Variable Interest Entities (Trust preferred Securities) (Details 1) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 3 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Unconsolidated Trusts [Member]
Dec. 31, 2013
Unconsolidated Trusts [Member]
Sep. 30, 2014
Sky Financial Capital Trust IV [Member]
Sep. 30, 2014
Sky Financial Capital Trust III [Member]
Sep. 30, 2014
Huntington Capital II [Member]
Sep. 30, 2014
Huntington Capital I [Member]
Sep. 30, 2014
Trust Preferred Securities Total [Member]
Dec. 31, 2013
Trust Preferred Securities Total [Member]
Sep. 30, 2014
2011 Automobile Trust [Member]
Dec. 31, 2013
2011 Automobile Trust [Member]
Sep. 30, 2014
Tower Hill Securities [Member]
Dec. 31, 2013
Tower Hill Securities [Member]
Sep. 30, 2014
Low Income Housing Tax Credit Partnerships [Member]
Dec. 31, 2013
Low Income Housing Tax Credit Partnerships [Member]
Sep. 30, 2014
2012-1 Automobile Trust [Member]
Dec. 31, 2013
2012-1 Automobile Trust [Member]
Sep. 30, 2014
2012-2 Automobile Trust [Member]
Dec. 31, 2013
2012-2 Automobile Trust [Member]
Sep. 30, 2014
Camco Trust [Member]
Summary of Outstanding Trust Preferred Securities                                        
Interest rate on Trust Preferred Securities       1.63% [1] 1.63% [1] 0.86% [2] 0.94% [3]                         1.56% [4]
Maximum exposure to loss   $ 487,517 $ 490,617         $ 0 $ 0 $ 1,336 $ 3,040 $ 56,145 $ 66,702 $ 340,133 $ 317,226 $ 2,898 $ 5,975 $ 4,071 $ 7,396  
Principal amount of subordinated note/ debenture issued to trust 317,067     74,320 [5] 72,165 [5] 54,593 [5] 111,816 [5]                         4,173 [4]
Investment in unconsolidated subsidiary $ 13,919     $ 2,320 $ 2,165 $ 3,093 $ 6,186                         $ 155
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]                                        
Variable rate basis three month LIBOR                                      
Rate spread over three month LIBOR       1.40% 1.40% 0.625% 0.70%                          
[1]
Variable effective rate at September 30, 2014, based on three month LIBOR + 1.40.
[2]
Variable effective rate at September 30, 2014, based on three month LIBOR + 0.625.
[3]
Variable effective rate at September 30, 2014, based on three month LIBOR + 0.70.
[4]
Variable effective rate (including impact of purchase accounting accretion) at September 30, 2014, based on three month LIBOR + 1.33.
[5]
Represents the principal amount of debentures issued to each trust, including unamortized original issue discount.