Annual report pursuant to Section 13 and 15(d)

Variable Interest Entities (Details 2)

v2.4.0.6
Variable Interest Entities (Details 2) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss $ 512,294,000 $ 479,989,000
Principal amount of subordinated note/ debenture issued to trust 312,894,000  
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Variable rate basis three month LIBOR  
Redemption of trust preferred securities, total 230,300,000  
Sky Financial Capital Trust IV [Member]
    
Summary of Outstanding Trust Preferred Securities    
Interest rate on Trust Preferred Securities 1.76% [1]  
Principal amount of subordinated note/ debenture issued to trust 74,320,000 [2]  
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Rate spread over three month LIBOR 1.40%  
Sky Financial Capital Trust III [Member]
    
Summary of Outstanding Trust Preferred Securities    
Interest rate on Trust Preferred Securities 1.71% [1]  
Principal amount of subordinated note/ debenture issued to trust 72,165,000 [2]  
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Rate spread over three month LIBOR 1.40%  
Huntington Capital II [Member]
    
Summary of Outstanding Trust Preferred Securities    
Interest rate on Trust Preferred Securities 0.93% [3]  
Principal amount of subordinated note/ debenture issued to trust 54,593,000 [2]  
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Rate spread over three month LIBOR 0.63%  
Huntington Capital I [Member]
    
Summary of Outstanding Trust Preferred Securities    
Interest rate on Trust Preferred Securities 1.01% [4]  
Principal amount of subordinated note/ debenture issued to trust 111,816,000 [2]  
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Rate spread over three month LIBOR 0.70%  
Trust Preferred Securities Total [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss 0 0
2011 Automobile Trust [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss 7,076,000 13,377,000
Tower Hill Securities [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss 87,075,000 90,514,000
Low Income Housing Tax Credit Partnerships [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss 391,878,000 376,098,000
2012-1 Automobile Trust [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss 12,649,000  
2012-2 Automobile Trust [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss $ 13,616,000  
[1] Variable effective rate at December 31, 2012, based on three month LIBOR + 1.40.
[2] Represents the principal amount of debentures issued to each trust, including unamortized original issue discount.
[3] Variable effective rate at December 31, 2012, based on three month LIBOR + 0.625.
[4] Variable effective rate at December 31, 2012, based on three month LIBOR + 0.70.