Annual report pursuant to Section 13 and 15(d)

Fair Values of Assets and Liabilities (Level 3 classification of gains/losses) (Details 2)

v2.4.1.9
Fair Values of Assets and Liabilities (Level 3 classification of gains/losses) (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
MSRs [Member]      
Classification of gains and losses in earnings:      
Mortgage banking income (loss) $ (11,450)hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
$ (966)hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
$ (29,799)hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
Securities gains (losses) 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
Interest and fee income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
Noninterest income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
Total (11,450)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
(966)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
(29,799)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= hban_MortgageServicingRightsMember
Derivative Instrument Asset, Net [Member]      
Classification of gains and losses in earnings:      
Mortgage banking income (loss) 3,047hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
(5,944)hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
10,617hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
Securities gains (losses) 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
Interest and fee income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
Noninterest income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
Total 3,047hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
(5,944)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
10,617hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= hban_DerivativeInstrumentAssetNetMember
Municipal securities [Member]      
Classification of gains and losses in earnings:      
Mortgage banking income (loss) 0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
Securities gains (losses) 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
Interest and fee income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
2,129hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
Noninterest income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
Total 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
2,129hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MunicipalBondsMember
Private label CMO [Member]      
Classification of gains and losses in earnings:      
Mortgage banking income (loss) 0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Securities gains (losses) 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
(336)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
(1,614)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Interest and fee income 36hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
156hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
818hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Noninterest income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Total 36hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
(180)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
(796)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Asset-backed Securities [Member]      
Classification of gains and losses in earnings:      
Mortgage banking income (loss) 0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
Securities gains (losses) 170hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
(1,466)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
Interest and fee income 56hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
(778)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
(59)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
Noninterest income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
Total 226hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
(2,244)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
(59)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AssetBackedSecuritiesMember
Automobile Loan [Member]      
Classification of gains and losses in earnings:      
Mortgage banking income (loss) 0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
Securities gains (losses) 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
Interest and fee income (1,032)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
(3,569)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
(6,950)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
Noninterest income 114hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
3,211hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
5,720hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
Total (918)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
(358)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
(1,230)hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_AutomobileLoanMember
Equity investments [Member]      
Classification of gains and losses in earnings:      
Mortgage banking income (loss) 0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
0hban_FairValueAssetMeasuredOnRecurringBasisGainLossIncludedInMortgageBankingIncomeLoss
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
Securities gains (losses) 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInSecuritiesGainsLosses
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
Interest and fee income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInInterestAndFeeIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
Noninterest income 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInNoninterestIncome
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
Total $ 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
$ 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember
$ 0hban_FairValueAssetsMeasuredOnRecurringBasisGainLossIncludedInEarnings
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_EquityMethodInvestmentsMember