Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details 2)

v2.4.1.9
Income Taxes (Details 2) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
ValuationAllowanceLineItems    
Valuation allowance 73,057,000us-gaap_DeferredTaxAssetsValuationAllowance $ 111,435,000us-gaap_DeferredTaxAssetsValuationAllowance
Operating loss carryfoward, State    
ValuationAllowanceLineItems    
Tax credit carryforward expiration Dec. 31, 2015  
Operating loss carryfoward, Federal    
ValuationAllowanceLineItems    
Tax credit carryforward expiration Dec. 31, 2023  
Capital loss carryforward    
ValuationAllowanceLineItems    
Valuation allowance 96,300,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= us-gaap_CapitalLossCarryforwardMember 		 
Change in deferred tax asset valuation allowance 0us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= us-gaap_CapitalLossCarryforwardMember 		 
Tax credit carryforward expiration Dec. 31, 2015  
General business credit carryover    
ValuationAllowanceLineItems    
Tax credit carryforward expiration Dec. 31, 2027  
Charitable contribution carryforward    
ValuationAllowanceLineItems    
Change in deferred tax asset valuation allowance (15,100,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= hban_CharitableContributionMember 		 
Tax credit carryforward expiration Dec. 31, 2016