Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans (Details Textuals)

v2.4.1.9
Benefit Plans (Details Textuals) (USD $)
 3 Months Ended
Mar. 31, 2015
Y
Dec. 31, 2014
Benefit Plans (Textuals) [Abstract]    
Employees retirement age for health care and life insurance benefits under unfunded defined benefit post-retirement plan 55hban_EmployeesRetirementAgeForHealthCareAndLifeInsuranceBenefits  
DeferredCompensationArrangementWithIndividualRequisiteServicePeriod 10 years  
Defined Benefit Plan, Information about Plan Assets [Abstract]    
Fair value of plan assets, Percentage 100.00%hban_FairValueOfPlanAssetsPercentage 100.00%hban_FairValueOfPlanAssetsPercentage
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]    
Match - Base pay contributed to the plan Matched participant contributions up to first 4%  
BasePayContributedToPlanProfitSharing Profit-sharing contribution equal to first 1% participants’ 2014 base pay was awarded.  
Post Retirement Benefits [Member]    
Benefit Plans (Textuals) [Abstract]    
PlanAmendementMeasurementReductionInLiability 5,200,000hban_PlanAmendementMeasurementReductionInLiability
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember 		 
Equity Securities [Member]    
Defined Benefit Plan, Information about Plan Assets [Abstract]    
Defined Benefit Plan, Actual Plan Asset Allocations 49.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_EquitySecuritiesMember 		 
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum 20.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_EquitySecuritiesMember 		 
Defined Benefit Plan, Target Plan Assets Allocation Range Maximum 50.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_EquitySecuritiesMember 		 
Covered Bonds [Member]    
Defined Benefit Plan, Information about Plan Assets [Abstract]    
Defined Benefit Plan, Actual Plan Asset Allocations 50.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_BondsMember 		 
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum 50.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_BondsMember 		 
Defined Benefit Plan, Target Plan Assets Allocation Range Maximum 80.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_BondsMember 		 
Cash and Cash Equivalents [Member]    
Defined Benefit Plan, Information about Plan Assets [Abstract]    
Defined Benefit Plan, Actual Plan Asset Allocations 1.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashAndCashEquivalentsMember