XML 1060 R141.htm IDEA: XBRL DOCUMENT v2.4.1.9
Derivatives (Derivatives Associated With Interest Rate Risk Management Activities) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]    
Term borrowings $ 1,880,105,000us-gaap_OtherLongTermDebt $ 1,739,859,000us-gaap_OtherLongTermDebt
Customer Interest Rate Contracts [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Notional 1,754,939,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember		 1,786,532,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
Assets 76,614,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember		 76,980,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
Liabilities 3,681,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember		 11,214,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
Customer Interest Rate Contracts [Member] | Customer Interest Rate Contracts Hedging [Member] | Hedging Instruments And Hedged Items [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Notional 664,345,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1] 759,830,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1]
Assets 26,084,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1] 28,747,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1]
Liabilities 430,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1] 3,670,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1]
Gains/(Losses) 577,000fhn_GainsLossesRelatedToInterestRateDerivatives
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1],[2] (30,057,000)fhn_GainsLossesRelatedToInterestRateDerivatives
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_CustomerInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1]
Offsetting Upstream Interest Rate Contracts [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Notional 1,754,939,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember		 1,786,532,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
Assets 3,681,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember		 11,214,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
Liabilities 76,614,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember		 76,980,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
Offsetting Upstream Interest Rate Contracts [Member] | Customer Interest Rate Contracts Hedging [Member] | Hedging Instruments And Hedged Items [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Notional 664,345,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1] 776,236,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1]
Assets 430,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1] 3,670,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1]
Liabilities 26,584,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1] 29,247,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1]
Gains/(Losses) (577,000)fhn_GainsLossesRelatedToInterestRateDerivatives
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1],[2] 30,547,000fhn_GainsLossesRelatedToInterestRateDerivatives
/ us-gaap_DerivativeInstrumentRiskAxis
= fhn_OffsettingUpstreamInterestRateContractsMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= fhn_CustomerInterestRateContractsHedgingMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsAndHedgedItemsMember		 [1]
Interest Rate Swap [Member] | Debt [Member] | Hedging Instruments [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Notional 1,654,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsMember		 [2] 1,254,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsMember		 [2]
Assets 24,811,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsMember		 [2] 58,226,000us-gaap_InterestRateDerivativeAssetsAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsMember		 [2]
Liabilities 3,910,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsMember		 [2] 24,904,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsMember		 [2]
Gains/(Losses) (12,126,000)fhn_GainsLossesRelatedToInterestRateDerivatives
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsMember		 [2] (61,853,000)fhn_GainsLossesRelatedToInterestRateDerivatives
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgingInstrumentsMember		 [2]
Long Term Debt [Member] | Debt [Member] | Hedged Items [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Liabilities 1,654,000,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LongTermDebtMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgedItemsMember		 [2],[3]  
Term borrowings   1,254,000,000us-gaap_OtherLongTermDebt
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LongTermDebtMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgedItemsMember		 [2],[3]
Gains/(Losses) related to term borrowings $ 12,272,000fhn_GainLossRelatedToChangesInFairValueOfTermBorrowingsDueToInterestRateRisk
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LongTermDebtMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgedItemsMember		 [2],[4] $ 61,853,000fhn_GainLossRelatedToChangesInFairValueOfTermBorrowingsDueToInterestRateRisk
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LongTermDebtMember
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= us-gaap_DebtMember
/ us-gaap_HedgingDesignationAxis
= fhn_HedgedItemsMember		 [2],[4]
[1]

Gains/losses included in the Other expense section of the ConsolidatedStatements of Income.
[2]

Gains/losses included in the All other income and commissions section of the Consolidated Statements of Income.
[3]

Represents par value of term borrowings being hedged.
[4]

Represents gains and losses attributable to changes in fair value due to interest rate risk as designated in ASC 815-20 hedging relationships.