Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments (Mortgage banking activities) (Details 6)

v2.4.1.9
Derivative Financial Instruments (Mortgage banking activities) (Details 6) (Derivative used in Mortgage Banking Activities [Member], USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Derivative assets:    
Total derivative assets $ 8,838us-gaap_DerivativeFairValueOfDerivativeAsset $ 4,099us-gaap_DerivativeFairValueOfDerivativeAsset
Derivative liabilities:    
Total derivative liabilities (4,156)us-gaap_DerivativeFairValueOfDerivativeLiability (4,019)us-gaap_DerivativeFairValueOfDerivativeLiability
Net derivative asset (liability) 4,682us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet 80us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Interest rate lock agreements [Member]    
Derivative assets:    
Total derivative assets 8,472us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hban_DerivativeUsedInMortgageBankingActivitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateLockCommitmentsMember
4,064us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hban_DerivativeUsedInMortgageBankingActivitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateLockCommitmentsMember
Derivative liabilities:    
Total derivative liabilities (202)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hban_DerivativeUsedInMortgageBankingActivitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateLockCommitmentsMember
(259)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hban_DerivativeUsedInMortgageBankingActivitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateLockCommitmentsMember
Forward trades and options [Member]    
Derivative assets:    
Total derivative assets 366us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hban_DerivativeUsedInMortgageBankingActivitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_ForwardTradesAndOptionsMember
35us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hban_DerivativeUsedInMortgageBankingActivitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_ForwardTradesAndOptionsMember
Derivative liabilities:    
Total derivative liabilities $ (3,954)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hban_DerivativeUsedInMortgageBankingActivitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_ForwardTradesAndOptionsMember
$ (3,760)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hban_DerivativeUsedInMortgageBankingActivitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hban_ForwardTradesAndOptionsMember