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Variable Interest Entities (Details 2) (USD $)
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3 Months Ended | ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2012
|
Jun. 30, 2012
Unconsolidated Trusts [Member]
|
Dec. 31, 2011
Unconsolidated Trusts [Member]
|
Jun. 30, 2012
Prospect Trust I [Member]
|
Jun. 30, 2012
Sky Financial Capital Trust IV [Member]
|
Jun. 30, 2012
Sky Financial Capital Trust III [Member]
|
Jun. 30, 2012
Sky Financial Capital Trust II [Member]
|
Jun. 30, 2012
Sky Financial Capital Trust I [Member]
|
Jun. 30, 2012
Banc First Ohio Trust Preferred [Member]
|
Jun. 30, 2012
Huntington Capital III [Member]
|
Jun. 30, 2012
Huntington Capital II [Member]
|
Jun. 30, 2012
Huntington Capital I [Member]
|
Jun. 30, 2012
Trust Preferred Securities Total [Member]
|
Dec. 31, 2011
Trust Preferred Securities Total [Member]
|
Jun. 30, 2012
2011 Automobile Trust [Member]
|
Dec. 31, 2011
2011 Automobile Trust [Member]
|
Jun. 30, 2012
Tower Hill Securities [Member]
|
Dec. 31, 2011
Tower Hill Securities [Member]
|
Jun. 30, 2012
Low Income Housing Tax Credit Partnerships [Member]
|
Dec. 31, 2011
Low Income Housing Tax Credit Partnerships [Member]
|
Jun. 30, 2012
2012 Automobile Trust [Member]
|
Dec. 31, 2011
2012 Automobile Trust [Member]
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| Summary of Outstanding Trust Preferred Securities | |||||||||||||||||||||||||||||||||||||||||||
| Interest rate on Trust Preferred Securities | 3.72% | [1] | 1.87% | [2] | 1.87% | [2] | 3.42% | [3] | 0.00% | 0.00% | 6.85% | 1.09% | [4] | 1.45% | [5] | ||||||||||||||||||||||||||||
| Maximum exposure to loss | $ 473,854,000 | $ 479,989,000 | $ 0 | $ 0 | $ 9,933,000 | $ 13,377,000 | $ 89,100,000 | $ 90,514,000 | $ 358,017,000 | $ 376,098,000 | $ 16,804,000 | $ 0 | |||||||||||||||||||||||||||||||
| Principal amount of subordinated note/ debenture issued to trust | 464,125,000 | 6,186,000 | [6] | 74,320,000 | [6] | 72,165,000 | [6] | 30,929,000 | [6] | 0 | [6] | 0 | [6] | 114,116,000 | [6] | 54,593,000 | [6] | 111,816,000 | [6] | ||||||||||||||||||||||||
| Investment in unconsolidated subsidiary | 14,889,000 | 186,000 | 2,320,000 | 2,165,000 | 929,000 | 0 | 0 | 10,000 | 3,093,000 | 6,186,000 | |||||||||||||||||||||||||||||||||
| Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Variable rate basis | 3 month LIBOR | ||||||||||||||||||||||||||||||||||||||||||
| Rate spread over three month LIBOR | 3.25% | 1.40% | 1.40% | 2.95% | 0.63% | 0.70% | |||||||||||||||||||||||||||||||||||||
| Redemption of trust preferred securities | $ 80,000,000 | ||||||||||||||||||||||||||||||||||||||||||
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