XML 59 R46.htm IDEA: XBRL DOCUMENT
v3.25.1

Loans and Leases - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accrued interest | $ 258 |  | $ 271
Net loans and leases | 61,393 |  | 61,750
Loans and leases | $ 62,215 |  | 62,565
Credit Card Workout Program rate reduction, interest rate floor | 0.00% |  |
Credit Card Workout Program term extension, maximum period | 5 years |  |
Loans modified with subsequent default, amount | $ 1 | $ 1 |
Minimum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Credit Card Hardship Program, rate and payment reduction, period | 6 months |  |
Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Credit Card Hardship Program, rate and payment reduction, period | 1 year |  |
Commercial: | Minimum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Commercial loan grades | 1 |  |
Commercial: | Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Commercial loan grades | 16 |  |
Commercial: | Loans to mortgage companies |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | $ 3,369 |  | 3,471
Commercial: | Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | 33,354 |  | 33,428
Commercial: | Commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | 14,139 |  | 14,421
Consumer: |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | 14,089 |  | 14,047
Finance and Insurance Companies | Commercial: | Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | $ 3,500 |  |
Financial Services Industry Loans | Commercial: | Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Percentage contributed | 20.00% |  |
C&I | Collateral Pledged |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | $ 356 |  | 352
C&I | Commercial: | Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | 29,985 |  | 29,957
C&I | Commercial: | Commercial and industrial | Collateral Pledged |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | 122 |  |
Commercial Real Estate | Commercial: | Commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | 14,139 |  | 14,421
Commercial Real Estate | Commercial: | Commercial real estate | Collateral Pledged |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | 234 |  |
Asset Pledged as Collateral |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Net loans and leases | 45,700 |  | 45,800
Asset Pledged as Collateral | Consumer: |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing receivable, allowance for credit loss, writeoff, collateral | 0 | $ 0 |
Asset Pledged as Collateral | C&I |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing receivable, allowance for credit loss, writeoff, collateral | 24 |  |
Asset Pledged as Collateral | Home Equity Line of Credit |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | 6 |  | 6
Asset Pledged as Collateral | R E Installment Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases | $ 38 |  | $ 36

X
- Definition Commercial Loan Grades + References No definition available. + Details
Name: | fhn_CommercialLoanGrades
Namespace Prefix: | fhn_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Credit Card Hardship Program, Rate And Payment Reduction, Period + References No definition available. + Details
Name: | fhn_CreditCardHardshipProgramRateAndPaymentReductionPeriod
Namespace Prefix: | fhn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Credit Card Workout Program Rate Reduction, Interest Rate Floor + References No definition available. + Details
Name: | fhn_CreditCardWorkoutProgramRateReductionInterestRateFloor
Namespace Prefix: | fhn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Credit Card Workout Program Term Extension, Maximum Period + References No definition available. + Details
Name: | fhn_CreditCardWorkoutProgramTermExtensionMaximumPeriod
Namespace Prefix: | fhn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Allowance for Credit Loss, Writeoff, Collateral + References No definition available. + Details
Name: | fhn_FinancingReceivableAllowanceforCreditLossWriteoffCollateral
Namespace Prefix: | fhn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage Contributed By Segment Loans + References No definition available. + Details
Name: | fhn_PercentageContributedBySegmentLoans
Namespace Prefix: | fhn_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 40 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481628/310-20-40-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before allowance for credit loss, of accrued interest on financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable with payment default in current period and modified within previous 12 months preceding payment default for debtor experiencing financial difficulty. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-34 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 44 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-44 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fhn_LoansToMortgageCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fhn_CommercialFinancialAndIndustrialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fhn_SubClassofFinancingReceivableAxis=fhn_FinanceAndInsuranceCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fhn_SubClassofFinancingReceivableAxis=fhn_FinancialServicesIndustryLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fhn_SubClassofFinancingReceivableAxis=fhn_GeneralCIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_CollateralPledgedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fhn_SubClassofFinancingReceivableAxis=fhn_CommercialRealEstate1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fhn_SubClassofFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fhn_SubClassofFinancingReceivableAxis=fhn_REInstallmentLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |