XML 134 R9999.htm IDEA: XBRL DOCUMENT
v3.19.1

Label | Element | Value
--- | --- | ---
Additional Paid-in Capital [Member] |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | $ 3,147,613,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | 3,029,425,000
Noncontrolling Interest [Member] |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | 295,431,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | 295,431,000
Preferred Stock Including Additional Paid in Capital [Member] |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | 95,624,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | 95,624,000
Common Stock [Member] |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | 204,211,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | 199,108,000
Retained Earnings, Unappropriated [Member] |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | 1,160,712,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 | 1,541,397,000
Accounting Standards Update 2016-02 [Member] |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption | (1,011,000)
Accounting Standards Update 2016-02 [Member] | Retained Earnings, Unappropriated [Member] |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption | (1,011,000)
Accounting Standards Update 2016-01 and 2017-12 [Member] | Retained Earnings, Unappropriated [Member] |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption | $ 278,000

X
- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. + References No definition available. + Details
Name: | us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of stockholders' equity including the portion attributable to noncontrolling interests, after the cumulative effect adjustment of a new accounting principle applied in the period of adoption. + References No definition available. + Details
Name: | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AdditionalPaidInCapitalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_NoncontrollingInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_PreferredStockIncludingAdditionalPaidInCapitalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_RetainedEarningsUnappropriatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201602Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=fhn_AccountingStandardsUpdate201601and201712Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |