XML 104 R49.htm IDEA: XBRL DOCUMENT v2.4.1.9
Loans (Narrative) (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Troubled debt restructurings loans $ 317,800,000us-gaap_FinancingReceivableModificationsRecordedInvestment $ 353,400,000us-gaap_FinancingReceivableModificationsRecordedInvestment    
Allowance for loan losses 228,328,000us-gaap_LoansAndLeasesReceivableAllowance 247,246,000us-gaap_LoansAndLeasesReceivableAllowance 232,448,000us-gaap_LoansAndLeasesReceivableAllowance 253,809,000us-gaap_LoansAndLeasesReceivableAllowance
Average balance of impaired loans 345,864,000us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment 391,004,000us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment    
Interest income recognized on impaired loan 1,663,000us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod 1,681,000us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod    
Forbearance agreements time period 6 months      
Loans, net of unearned income 16,732,123,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome [1] 15,119,461,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome 16,230,166,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome  
Provision for loan losses 5,000,000us-gaap_ProvisionForLoanLeaseAndOtherLosses 10,000,000us-gaap_ProvisionForLoanLeaseAndOtherLosses    
Loan loss provision on PCI loans 200,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesProvisionForLoanLosses1 1,200,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesProvisionForLoanLosses1    
Allowance - purchased credit impaired loans 3,095,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses 1,899,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses    
Permanent Mortgage Portfolio Segment        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Allowance for loan losses 20,186,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		 22,521,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		 19,122,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		 22,491,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember
TDR, reduction of interest rate by increment, basis points 0.25%fhn_BasisPointsIncrements
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		      
TDRS Maturities 40 years      
Loans, net of unearned income 511,708,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		 622,242,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		 538,961,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		  
Modified interest rate increase 1.00%fhn_ModifiedInterestRateIncrease
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		      
Provision for loan losses 1,630,000us-gaap_ProvisionForLoanLeaseAndOtherLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		 1,670,000us-gaap_ProvisionForLoanLeaseAndOtherLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		    
Allowance - purchased credit impaired loans 0us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		 0us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember		    
Loans Held-For-Sale        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Troubled debt restructurings loans 78,000,000us-gaap_FinancingReceivableModificationsRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_LoansHeldForSaleMember		 137,000,000us-gaap_FinancingReceivableModificationsRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_LoansHeldForSaleMember		    
Residential Real Estate        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Concentration risk, percentage 32.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		      
Consumer Real Estate Portfolio Segment        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Concentration risk, percentage 29.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		      
Allowance for loan losses 109,245,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		 123,409,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		 113,011,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		 126,785,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember
TDRS Maturities 30 years      
Loans, net of unearned income 4,922,817,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		 [2] 5,258,014,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		 [2] 5,048,071,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		 [2]  
Provision for loan losses 47,000us-gaap_ProvisionForLoanLeaseAndOtherLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		 3,914,000us-gaap_ProvisionForLoanLeaseAndOtherLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		    
Allowance - purchased credit impaired loans 490,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		 10,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ConsumerRealEstatePortfolioSegmentMember		    
Modified Loans Classified As A TDR        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Allowance for loan losses 62,100,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ModifiedLoansClassifiedAsTdrMember		 65,800,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ModifiedLoansClassifiedAsTdrMember		    
Ratio of the allowance for loan losses to loans 20.00%fhn_RatioOfAllowanceForLoanLossesToLoans
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ModifiedLoansClassifiedAsTdrMember		 19.00%fhn_RatioOfAllowanceForLoanLossesToLoans
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_ModifiedLoansClassifiedAsTdrMember		    
Loans To Mortgage Companies        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Percentage contributed in total loan 10.00%fhn_PercentageContributedBySegmentLoansInTotalLoan
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_LoansToMortgageCompaniesMember		      
Concentration risk, percentage 17.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_LoansToMortgageCompaniesMember		      
Commercial loans 1,641,672,000us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_LoansToMortgageCompaniesMember		 709,552,000us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_LoansToMortgageCompaniesMember		    
Loans, net of unearned income 1,641,672,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_LoansToMortgageCompaniesMember		 709,552,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_LoansToMortgageCompaniesMember		    
Commercial Portfolio Segment [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Allowance for loan losses 85,317,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 86,367,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		    
Average balance of impaired loans 60,790,000us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 96,696,000us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		    
Interest income recognized on impaired loan 290,000us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 244,000us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		    
Commercial loans 10,959,252,000us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 8,859,764,000us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		    
Time period of default probability 1 year      
Allowance - purchased credit impaired loans 2,605,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		      
Credit Card & Other        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Allowance for loan losses 13,580,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		 13,061,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		 14,730,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		 7,484,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember
Loans, net of unearned income 338,346,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		 333,792,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		 358,131,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		  
Provision for loan losses 1,893,000us-gaap_ProvisionForLoanLeaseAndOtherLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		 8,657,000us-gaap_ProvisionForLoanLeaseAndOtherLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		    
Allowance - purchased credit impaired loans 0us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		 0us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardAndOtherPortfolioSegmentMember		    
Credit Card        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Credit card workout program, granted rate reduction 0.00%fhn_CreditCardWorkoutProgramGrantedRateReduction
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardClassMember		      
Loans, net of unearned income 179,949,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardClassMember		 183,443,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_CreditCardClassMember		    
Heloc And Real Estate Installment Classes        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
TDR, reduction of interest rate by increment, basis points 0.25%fhn_BasisPointsIncrements
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_HelocAndRealEstateInstallmentClassesMember		      
Restricted And Secured Consumer Real Estate Loans        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans, net of unearned income 71,600,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_RestrictedAndSecuredConsumerRealEstateLoansMember		 86,700,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_RestrictedAndSecuredConsumerRealEstateLoansMember		 76,800,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_RestrictedAndSecuredConsumerRealEstateLoansMember		  
Finance And Insurance Companies        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Percentage contributed in total loan 12.00%fhn_PercentageContributedBySegmentLoansInTotalLoan
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_FinanceAndInsuranceCompaniesMember		      
Concentration risk, percentage 21.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_FinanceAndInsuranceCompaniesMember		      
Commercial loans 2,000,000,000us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_FinanceAndInsuranceCompaniesMember		      
Finance Insurance And Loans To Mortgage Companies        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Percentage contributed in total loan 38.00%fhn_PercentageContributedBySegmentLoansInTotalLoan
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_FinanceInsuranceAndLoansToMortgageCompaniesMember		      
Purchased Credit Impaired Loans        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Net charge-offs 100,000us-gaap_AllowanceForLoanAndLeaseLossesWriteoffsNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PurchasedCreditImpairedLoansMember		 400,000us-gaap_AllowanceForLoanAndLeaseLossesWriteoffsNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PurchasedCreditImpairedLoansMember		    
Maximum | Permanent Mortgage Portfolio Segment        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Modified interest rate time period 5 years      
Maximum | Commercial Portfolio Segment [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Forbearance agreements time period 12 months      
Maximum | Credit Card        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Payment reductions, time period 1 year      
Credit card workout program, term extension 5 years      
Maximum | Heloc And Real Estate Installment Classes        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Modified interest rate time period 5 years      
Minimum | Permanent Mortgage Portfolio Segment        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Modified interest rate 2.00%fhn_ModifiedInterestRate
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_PermanentMortgagePortfolioSegmentMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		      
Modified interest rate time period 5 years      
Minimum | Credit Card        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Payment reductions, time period 6 months      
Minimum | Heloc And Real Estate Installment Classes        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Modified interest rate 1.00%fhn_ModifiedInterestRate
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fhn_HelocAndRealEstateInstallmentClassesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		      
Special Mention        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commercial loan grades 13fhn_CommercialLoanGrades
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		      
Substandard        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commercial loan grades 14fhn_CommercialLoanGrades
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		      
Doubtful        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commercial loan grades 15fhn_CommercialLoanGrades
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember		      
Unlikely to be Collected Financing Receivable        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commercial loan grades 16fhn_CommercialLoanGrades
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_UnlikelyToBeCollectedFinancingReceivableMember		      
PD Grade 1        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Allowance for loan losses 75,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanPDGradeOneMember		 90,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanPDGradeOneMember		    
Lowest expected default probability 1fhn_LowestExpectedDefaultProbability
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanPDGradeOneMember		      
PD Grade 12        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Allowance for loan losses 4,103,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanPDGradeTwelveMember		 2,403,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanPDGradeTwelveMember		    
PD Grade 13        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Allowance for loan losses 4,989,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanPDGradeThirteenMember		 7,968,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanPDGradeThirteenMember		    
PD Grade 13 | Minimum        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commercial loans 500,000us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanPDGradeThirteenMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		      
LGD Grade 1        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commercial loan grades 1fhn_CommercialLoanGrades
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanLGDGradeOneMember		      
LGD Grade 12        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commercial loan grades 12fhn_CommercialLoanGrades
/ us-gaap_InternalCreditAssessmentAxis
= fhn_CommercialLoanLGDGradeTwelveMember		      
Loan Reassessed | Minimum        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commercial loans $ 1,000,000us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_InternalCreditAssessmentAxis
= fhn_LoanReassessedMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		      
[1]
(b) March 31, 2015 includes $28.0 million of held-to-maturity consumer mortgage loans secured by residential real estate properties in process of foreclosure.
[2]

(a) Balances as of March 31, 2015 and 2014, and December 31, 2014 include $71.6 million, $86.7 million, and $76.8 million of restricted real estate loans, respectively. See Note 13 - Variable Interest Entities for additional information.