Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments (BS Offsetting) (Details 4)

v2.4.1.9
Derivative Financial Instruments (BS Offsetting) (Details 4) (Deriviative Contract [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Deriviative Contract [Member]
   
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]    
Cash collateral received $ (1,095)us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
$ (360)us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Assets [Abstract]    
Gross amounts offset in the statement of financial position (128,161)us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
(111,458)us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Gross amounts not offset in the statement of financial position - financial instruments (27,744)us-gaap_DerivativeAssetNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
(35,205)us-gaap_DerivativeAssetNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Assets 323,803us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
153,880us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Asset, Fair Value, Net [Abstract]    
Gross amounts of recognized assets 480,803us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
300,903us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Net amounts of assets presented in the statement of financial position 352,642us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
189,445us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]    
Cash collateral given (111)us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
290us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Liabilities [Abstract]    
Gross amounts offset in the statement of financial position (78,937)us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
(76,539)us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Gross amounts not offset in the statement of financial position - financial instruments (78,654)us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
(86,204)us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Liabilities 205,490us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
33,944us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Liability, Fair Value, Net [Abstract]    
Gross amounts of recognized liabilities 363,192us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
196,397us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Net amounts of assets presented in the statement of financial position $ 284,255us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
$ 119,858us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember