Annual report pursuant to Section 13 and 15(d)

Share Based Compensation (RSU/RSA) (Details 3)

v2.4.1.9
Share Based Compensation (RSU/RSA) (Details 3) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Summary of restricted stock units and restricted stock awards      
Granted, weighted average grant date fair value per share $ 9.09us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue $ 7.12us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue $ 6.69us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Restricted stock awards [Member]      
Summary of restricted stock units and restricted stock awards      
Nonvested Beginning balance 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Nonvested Beginning balance, Weighted average grant date fair value per share $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Granted 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Granted, weighted average grant date fair value per share $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Assumed 27hban_Acquired
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Assumed, Weighted Average Grant Date Fair Value Per Share $ 0hban_AcquiredWeightedAverageGrantDateFairValuePerShare
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Released 14us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Released, Weighted average grant date fair value per share $ 9.53us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Forfeited 1us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Forfeited, Weighted average grant date fair value per share $ 9.53hban_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionForfeitedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Nonvested Ending balance 12us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Nonvested, Weighted average grant date fair value per share $ 9.53us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_RestrictedStockAwardsMember 		   
Restricted Stock Unit [Member]      
Summary of restricted stock units and restricted stock awards      
Nonvested Beginning balance 12,064us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Nonvested Beginning balance, Weighted average grant date fair value per share $ 6.8us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Granted 4,600us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Granted, weighted average grant date fair value per share $ 9.12us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Released 4,003us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Released, Weighted average grant date fair value per share $ 6.39us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Forfeited (757)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Forfeited, Weighted average grant date fair value per share $ 7.54hban_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionForfeitedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Nonvested Ending balance 11,904us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Nonvested, Weighted average grant date fair value per share $ 7.79us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Performance Share Awards [Member]      
Summary of restricted stock units and restricted stock awards      
Nonvested Beginning balance 1,646us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember 		   
Nonvested Beginning balance, Weighted average grant date fair value per share $ 6.95us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember 		   
Granted 1,076us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember 		   
Granted, weighted average grant date fair value per share $ 8.96us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember 		   
Released 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember 		   
Released, Weighted average grant date fair value per share $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember 		   
Forfeited 143us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember 		   
Forfeited, Weighted average grant date fair value per share $ 7.26hban_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionForfeitedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember 		   
Nonvested Ending balance 2,579us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember 		   
Nonvested, Weighted average grant date fair value per share $ 7.76us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= hban_PerformanceShareAwardsMember