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, 2011
Dec. 31, 2010
Summary of Outstanding Trust Preferred Securities    
Principal amount of subordinated note/ debenture issued to trust $ 554,496,000  
Investment in unconsolidated subsidiary 17,364,000  
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Variable rate basis three month LIBOR  
Redemption of Trust-preferred securities 35,500,000  
Total assets 54,450,652,000 53,819,642,000
Total liabilities 49,032,552,000 48,839,100,000
Consolidated Trusts [Member]
    
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 1,214,690,000 2,140,163,000
Total liabilities 475,758,000 1,393,952,000
2006 Automobile Trust [Member]
    
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 753,642,000 1,255,696,000
Total liabilities 333,732,000 877,494,000
2008 Automboile Trust [Member]
    
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 143,777,000 314,280,000
Total liabilities 18,270,000 152,245,000
2009 Automobile Trust [Member]
    
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 316,154,000 549,740,000
Total liabilities 123,337,000 356,782,000
2009 Franklin Trust [Member]
    
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 1,117,000 20,447,000
Total liabilities 419,000 7,431,000
Unconsolidated Trusts [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss 479,989,000 405,533,000
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 497,353,000 423,052,000
Total liabilities 777,250,000 802,784,000
Prospect Trust I [Member]
    
Summary of Outstanding Trust Preferred Securities    
Interest rate on Trust Preferred Securities 3.65% [1]  
Principal amount of subordinated note/ debenture issued to trust 6,186,000 [2]  
Investment in unconsolidated subsidiary 186,000  
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 1.77% [3]  
Principal amount of subordinated note/ debenture issued to trust 77,320,000 [2]  
Investment in unconsolidated subsidiary 2,320,000  
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 1.77% [3]  
Principal amount of subordinated note/ debenture issued to trust 72,165,000 [2]  
Investment in unconsolidated subsidiary 2,165,000  
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 3.34% [4]  
Principal amount of subordinated note/ debenture issued to trust 30,929,000 [2]  
Investment in unconsolidated subsidiary 929,000  
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 64,194,000 [2]  
Investment in unconsolidated subsidiary 1,856,000  
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 23,192,000 [2]  
Investment in unconsolidated subsidiary 619,000  
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 114,101,000 [2]  
Investment in unconsolidated subsidiary 10,000  
Huntington Capital II [Member]
    
Summary of Outstanding Trust Preferred Securities    
Interest rate on Trust Preferred Securities 1.17% [5]  
Principal amount of subordinated note/ debenture issued to trust 54,593,000 [2]  
Investment in unconsolidated subsidiary 3,093,000  
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 1.13% [6]  
Principal amount of subordinated note/ debenture issued to trust 111,816,000 [2]  
Investment in unconsolidated subsidiary 6,186,000  
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
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 17,364,000 17,519,000
Total liabilities 554,496,000 592,781,000
2011 Automobile Trust [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss 13,377,000  
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 13,377,000  
Total liabilities 0  
Tower Hill Securities [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss 90,514,000 89,550,000
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 90,514,000 89,550,000
Total liabilities 65,000,000 65,000,000
Low Income Housing Tax Credit Partnerships [Member]
    
Summary of Outstanding Trust Preferred Securities    
Maximum exposure to loss 376,098,000 315,983,000
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]    
Total assets 376,098,000 315,983,000
Total liabilities $ 157,754,000 $ 145,003,000
[1] Variable effective rate at December 31, 2011, 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 December 31, 2011, based on three month LIBOR + 1.40.
[4] Variable effective rate at December 31, 2011, based on three month LIBOR + 2.95.
[5] Variable effective rate at December 31, 2011, based on three month LIBOR + 0.625.
[6] Variable effective rate at December 31, 2011, based on three month LIBOR + 0.70.