Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans (Details 4)

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Benefit Plans (Details 4) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Defined Contribution Plan Disclosure    
Defined Contribution Plan, Cost Recognized $ 7,445us-gaap_DefinedContributionPlanCostRecognized $ 6,105us-gaap_DefinedContributionPlanCostRecognized
SupplementalExecutiveRetirementPlanAndSupplementalRetirementIncomePlan 578hban_supplementalexecutiveretirementplanandsupplementalretirementincomeplan 475hban_supplementalexecutiveretirementplanandsupplementalretirementincomeplan
BenefitCost $ 8,023hban_Benefitcost $ 6,580hban_Benefitcost