Quarterly report pursuant to Section 13 or 15(d)

Variable Interest Entities (Details 2)

v2.4.0.6
Variable Interest Entities (Details 2) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Summary of Outstanding Trust Preferred Securities      
Principal amount of subordinated note/ debenture issued to trust $ 554,417    
Investment in unconsolidated subsidiary 17,364    
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]      
Variable rate basis 3 month LIBOR    
Total assets 55,876,654 54,450,652 52,948,509
Total liabilities 50,326,826 49,032,552 47,909,910
Consolidated Trusts [Member]
      
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]      
Total assets 1,039,200 1,214,690 1,881,392
Total liabilities 302,515 475,758 1,150,405
2006 Automobile Trust [Member]
      
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]      
Total assets 654,018 753,642 1,122,644
Total liabilities 225,292 333,732 746,594
2008 Automboile Trust [Member]
      
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]      
Total assets 113,878 143,777 265,115
Total liabilities 0 18,270 103,216
2009 Automobile Trust [Member]
      
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]      
Total assets 270,966 316,154 487,662
Total liabilities 76,885 123,337 295,495
Other Consolidated Trusts [Member]
      
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]      
Total assets 338 1,117 5,971
Total liabilities 338 419 5,100
Unconsolidated Trusts [Member]
      
Summary of Outstanding Trust Preferred Securities      
Maximum exposure to loss 496,539 479,989 402,992
Prospect Trust I [Member]
      
Summary of Outstanding Trust Preferred Securities      
Interest rate on Trust Preferred Securities 3.82% [1]    
Principal amount of subordinated note/ debenture issued to trust 6,186 [2]    
Investment in unconsolidated subsidiary 186    
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]      
Rate spread over three month LIBOR 3.25%    
Sky Financial Capital Trust IV [Member]
      
Summary of Outstanding Trust Preferred Securities      
Interest rate on Trust Preferred Securities 1.98% [3]    
Principal amount of subordinated note/ debenture issued to trust 77,320 [2]    
Investment in unconsolidated subsidiary 2,320    
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 1.98% [3]    
Principal amount of subordinated note/ debenture issued to trust 72,165 [2]    
Investment in unconsolidated subsidiary 2,165    
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]      
Rate spread over three month LIBOR 1.40%    
Sky Financial Capital Trust II [Member]
      
Summary of Outstanding Trust Preferred Securities      
Interest rate on Trust Preferred Securities 3.51% [4]    
Principal amount of subordinated note/ debenture issued to trust 30,929 [2]    
Investment in unconsolidated subsidiary 929    
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]      
Rate spread over three month LIBOR 2.95%    
Sky Financial Capital Trust I [Member]
      
Summary of Outstanding Trust Preferred Securities      
Interest rate on Trust Preferred Securities 8.56%    
Principal amount of subordinated note/ debenture issued to trust 64,122 [2]    
Investment in unconsolidated subsidiary 1,856    
Banc First Ohio Trust Preferred [Member]
      
Summary of Outstanding Trust Preferred Securities      
Interest rate on Trust Preferred Securities 8.54%    
Principal amount of subordinated note/ debenture issued to trust 23,177 [2]    
Investment in unconsolidated subsidiary 619    
Huntington Capital III [Member]
      
Summary of Outstanding Trust Preferred Securities      
Interest rate on Trust Preferred Securities 6.69%    
Principal amount of subordinated note/ debenture issued to trust 114,109 [2]    
Investment in unconsolidated subsidiary 10    
Huntington Capital II [Member]
      
Summary of Outstanding Trust Preferred Securities      
Interest rate on Trust Preferred Securities 1.10% [5]    
Principal amount of subordinated note/ debenture issued to trust 54,593 [2]    
Investment in unconsolidated subsidiary 3,093    
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 1.25% [6]    
Principal amount of subordinated note/ debenture issued to trust 111,816 [2]    
Investment in unconsolidated subsidiary 6,186    
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 0
2011 Automobile Trust [Member]
      
Summary of Outstanding Trust Preferred Securities      
Maximum exposure to loss 11,578 13,377 0
Tower Hill Securities [Member]
      
Summary of Outstanding Trust Preferred Securities      
Maximum exposure to loss 89,528 90,514 89,256
Low Income Housing Tax Credit Partnerships [Member]
      
Summary of Outstanding Trust Preferred Securities      
Maximum exposure to loss 376,231 376,098 313,736
2012 Automobile Trust [Member]
      
Summary of Outstanding Trust Preferred Securities      
Maximum exposure to loss $ 19,202 $ 0 $ 0
[1] Variable effective rate at March 31, 2012, based on three month LIBOR + 3.25.
[2] Represents the principal amount of debentures issued to each trust, including unamortized original issue discount.
[3] Variable effective rate at March 31, 2012, based on three month LIBOR + 1.40.
[4] Variable effective rate at March 31, 2012, based on three month LIBOR + 2.95.
[5] Variable effective rate at March 31, 2012, based on three month LIBOR + 0.625.
[6] Variable effective rate at March 31, 2012, based on three month LIBOR + 0.70.