Quarterly report pursuant to Section 13 or 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
Mar. 31, 2015
Dec. 31, 2014
Deriviative Contract [Member]
   
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]    
Cash collateral received $ (2,086)us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
$ (1,095)us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Assets [Abstract]    
Gross amounts offset in the statement of financial position 145,650us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
128,161us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Gross amounts not offset in the statement of financial position - financial instruments 41,303us-gaap_DerivativeAssetNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
27,744us-gaap_DerivativeAssetNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Assets 401,955us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
323,803us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Asset, Fair Value, Net [Abstract]    
Gross amounts of recognized assets 590,994us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
480,803us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Net amounts of assets presented in the statement of financial position 445,344us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
352,642us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]    
Cash collateral given (461)us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
(111)us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Liabilities [Abstract]    
Gross amounts offset in the statement of financial position (59,262)us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
(78,937)us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Gross amounts not offset in the statement of financial position - financial instruments 73,305us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
78,654us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Liabilities 275,975us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
205,490us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Derivative Liability, Fair Value, Net [Abstract]    
Gross amounts of recognized liabilities 409,003us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
363,192us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
Net amounts of assets presented in the statement of financial position $ 349,741us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember
$ 284,255us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_DeriviativeContractMember