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Master Netting and Similar Agreements—Repurchase, Reverse Repurchase, and Securities Borrowing Transactions (Tables) | 9 Months Ended
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Sep. 30, 2021
Offsetting [Abstract] |
Securities Purchased Under Agreements To Resell And Collateral Pledged By Counterparties | The following table provides details of securities purchased under agreements to resell and collateral pledged by counterparties as of September 30, 2021 and December 31, 2020:
|  |  |  |  |  |  |  | Gross amounts not offset in the Balance Sheets |  |
(Dollars in millions) |  | Gross amounts of recognized assets |  | Gross amounts offset in the Balance Sheets |  | Net amounts of assets presented in the Balance Sheets |  | Offsetting securities sold under agreements to repurchase |  | Securities collateral (not recognized on FHN’s Balance Sheets) |  | Net amount
Securities purchased under agreements to resell: |  |  |  |  |  |  |  |  |  |  |  |
September 30, 2021 |  | $ | 355 |  |  | $ | — |  |  | $ | 355 |  |  | $ | (12) |  |  | $ | (341) |  |  | $ | 2 |
December 31, 2020 |  | 380 |  |  | — |  |  | 380 |  |  | — |  |  | (379) |  |  | 1 |
Securities Sold Under Agreements To Repurchase And Collateral Pledged By Company | The following table provides details of securities sold under agreements to repurchase and collateral pledged by FHN as of September 30, 2021 and December 31, 2020:
|  |  |  |  |  |  |  | Gross amounts not offset in the Balance Sheets |  |
(Dollars in millions) |  | Gross amounts of recognized liabilities |  | Gross amounts offset in the Balance Sheets |  | Net amounts of liabilities presented in the Balance Sheets |  | Offsetting securities purchased under agreements to resell |  | Securities/ government guaranteed loans collateral |  | Net amount
Securities sold under agreements to repurchase: |  |  |  |  |  |  |  |  |  |  |  |
September 30, 2021 |  | $ | 1,299 |  |  | $ | — |  |  | $ | 1,299 |  |  | $ | (12) |  |  | $ | (1,287) |  |  | $ | — |
December 31, 2020 |  | 1,187 |  |  | — |  |  | 1,187 |  |  | — |  |  | (1,187) |  |  | — |
Schedule of the Remaining Contractual Maturity by Collateral Type of Securities Sold Under Agreements To Repurchase | The following tables provide details, by collateral type, of the remaining contractual maturity of securities sold under agreements to repurchase as of September 30, 2021 and December 31, 2020:
|  | September 30, 2021
(Dollars in millions) |  | Overnight and Continuous |  | Up to 30 Days |  | Total
Securities sold under agreements to repurchase: |  |  |  |  |  |
U.S. treasuries |  | $ | 17 |  |  | $ | — |  |  | $ | 17 |
Government agency issued MBS |  | 1,097 |  |  | — |  |  | 1,097 |
Government agency issued CMO |  | 1 |  |  | — |  |  | 1 |
Other U.S. government agencies |  | 51 |  |  | — |  |  | 51 |
Government guaranteed loans (SBA and USDA) |  | 133 |  |  | — |  |  | 133 |
Total securities sold under agreements to repurchase |  | $ | 1,299 |  |  | $ | — |  |  | $ | 1,299 |
|  | December 31, 2020
(Dollars in millions) |  | Overnight and Continuous |  | Up to 30 Days |  | Total
Securities sold under agreements to repurchase: |  |  |  |  |  |
U.S. treasuries |  | $ | 284 |  |  | $ | — |  |  | $ | 284 |
Government agency issued MBS |  | 616 |  |  | — |  |  | 616 |
Government agency issued CMO |  | 10 |  |  | — |  |  | 10 |
Other U.S. government agencies |  | 151 |  |  | — |  |  | 151 |
Government guaranteed loans (SBA and USDA) |  | 126 |  |  | — |  |  | 126 |
Total securities sold under agreements to repurchase |  | $ | 1,187 |  |  | $ | — |  |  | $ | 1,187 |

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- Definition Securities Purchased Under Agreements To Resell And Collateral Pledged By Counterparties [Table Text Block] + References No definition available. + Details
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- Definition Securities Sold Under Agreements To Repurchase And Collateral Pledged By Company [Table Text Block] + References No definition available. + Details
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- References No definition available. + Details
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- Definition Tabular disclosure of the nature and risks of short-term collateralized financing obtained through repurchase agreements, securities lending transactions and repurchase-to-maturity transactions, accounted for as secured borrowings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729 + Details
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