XML 77 R62.htm IDEA: XBRL DOCUMENT
v3.20.2

Loans and Leases - Loans by FICO Score Percentage, Consumer (Details) - Accounts Receivable - Credit Concentration Risk | 12 Months Ended
--- | ---
Dec. 31, 2019
HELOC |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 100.00%
R/E Installment Loans |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 100.00%
FICO score 740 or greater | HELOC |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 62.00%
FICO score 740 or greater | R/E Installment Loans |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 71.90%
FICO score 720-739 | HELOC |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 8.60%
FICO score 720-739 | R/E Installment Loans |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 8.30%
FICO score 700-719 | HELOC |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 7.60%
FICO score 700-719 | R/E Installment Loans |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 6.30%
FICO score 660-699 | HELOC |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 10.80%
FICO score 660-699 | R/E Installment Loans |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 8.10%
FICO score 620-659 | HELOC |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 4.70%
FICO score 620-659 | R/E Installment Loans |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 2.80%
FICO score less than 620 | HELOC |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 6.30%
FICO score less than 620 | R/E Installment Loans |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Concentration risk, percentage | 2.60%

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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 2: 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 3: 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=121572278&loc=d3e13531-108611 Reference 4: 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=121572278&loc=d3e13537-108611 Reference 5: 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
- Details
Name: | fhn_SubClassofFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
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: |

X
- Details
Name: | us-gaap_CreditScoreFicoAxis=fhn_FicoScoreGreaterThanEqualTo740Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditScoreFicoAxis=fhn_FicoScore720To739Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditScoreFicoAxis=fhn_FicoScore700To719Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditScoreFicoAxis=fhn_FicoScore660To699Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditScoreFicoAxis=fhn_FicoScore620To659Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditScoreFicoAxis=fhn_FicoScoreLessThan620Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |