XML 67 R56.htm IDEA: XBRL DOCUMENT
v3.19.2

Loans - Concentrations and Restrictions (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018
Consumer | Residential Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Concentration risk, percentage | 21.00% |
Consumer | Consumer Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Concentration risk, percentage | 20.00% |
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Commercial loans | $ 22,915,300 | $ 20,545,198
Commercial | Finance And Insurance Companies |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Commercial loans | $ 2,700,000 |
Percentage of commercial & industrial loan portfolio | 14.00% |
Percentage contributed in total loan | 9.00% |
Commercial | Loans To Mortgage Companies |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Commercial loans | $ 3,800,000 |
Percentage of commercial & industrial loan portfolio | 20.00% |
Percentage contributed in total loan | 13.00% |
Commercial | Finance Insurance And Loans To Mortgage Companies |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Percentage of commercial & industrial loan portfolio | 34.00% |

X
- Definition Bank-related and TRUPs loans divided by total loan portfolio. + References No definition available. + Details
Name: | fhn_PercentageContributedBySegmentLoansInTotalLoan
Namespace Prefix: | fhn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of Commercial And Industrial Loan Portfolio + References No definition available. + Details
Name: | fhn_PercentageOfCommercialAndIndustrialLoanPortfolio
Namespace Prefix: | fhn_
Data Type: | num: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 No definition available. + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableBeforeFeesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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