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Regulatory Capital and Restrictions (Tables) | 12 Months Ended
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Dec. 31, 2022
Broker-Dealer [Abstract] |
Summary Of Actual Capital Amounts And Ratios | The actual capital amounts and ratios of FHN and First Horizon Bank are presented in the following table. Table 8.12.1 CAPITAL AMOUNTS & RATIOS
(Dollars in millions) |  | First Horizon Corporation |  | First Horizon Bank
|  | Amount |  | Ratio |  | Amount |  | Ratio
On December 31, 2022 |  |  |  |  |  |  |  |
Actual: |  |  |  |  |  |  |  |
Total Capital |  | $ | 9,222 |  |  | 13.33 | % |  | $ | 8,532 |  |  | 12.41 | %
Tier 1 Capital |  | 8,247 |  |  | 11.92 |  |  | 7,700 |  |  | 11.20 |
Common Equity Tier 1 |  | 7,032 |  |  | 10.17 |  |  | 7,405 |  |  | 10.77 |
Leverage |  | 8,247 |  |  | 10.36 |  |  | 7,700 |  |  | 9.76 |
Minimum Requirement for Capital Adequacy Purposes: |  |  |  |  |  |  |  |
Total Capital |  | 5,533 |  |  | 8.00 |  |  | 5,498 |  |  | 8.00 |
Tier 1 Capital |  | 4,150 |  |  | 6.00 |  |  | 4,124 |  |  | 6.00 |
Common Equity Tier 1 |  | 3,112 |  |  | 4.50 |  |  | 3,093 |  |  | 4.50 |
Leverage |  | 3,183 |  |  | 4.00 |  |  | 3,157 |  |  | 4.00 |
Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions: |  |  |  |  |  |  |  |
Total Capital |  |  |  |  |  | 6,873 |  |  | 10.00 |
Tier 1 Capital |  |  |  |  |  | 5,498 |  |  | 8.00 |
Common Equity Tier 1 |  |  |  |  |  | 4,467 |  |  | 6.50 |
Leverage |  |  |  |  |  | 3,946 |  |  | 5.00 |
On December 31, 2021 |  |  |  |  |  |  |  |
Actual: |  |  |  |  |  |  |  |
Total Capital |  | $ | 7,918 |  |  | 12.34 | % |  | $ | 7,893 |  |  | 12.41 | %
Tier 1 Capital |  | 7,088 |  |  | 11.04 |  |  | 7,133 |  |  | 11.22 |
Common Equity Tier 1 |  | 6,367 |  |  | 9.92 |  |  | 6,838 |  |  | 10.75 |
Leverage |  | 7,088 |  |  | 8.08 |  |  | 7,133 |  |  | 8.20 |
Minimum Requirement for Capital Adequacy Purposes: |  |  |  |  |  |  |  |
Total Capital |  | 5,135 |  |  | 8.00 |  |  | 5,088 |  |  | 8.00 |
Tier 1 Capital |  | 3,851 |  |  | 6.00 |  |  | 3,816 |  |  | 6.00 |
Common Equity Tier 1 |  | 2,888 |  |  | 4.50 |  |  | 2,862 |  |  | 4.50 |
Leverage |  | 3,507 |  |  | 4.00 |  |  | 3,478 |  |  | 4.00 |
Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions: |  |  |  |  |  |  |  |
Total Capital |  |  |  |  |  | 6,360 |  |  | 10.00 |
Tier 1 Capital |  |  |  |  |  | 5,088 |  |  | 8.00 |
Common Equity Tier 1 |  |  |  |  |  | 4,134 |  |  | 6.50 |
Leverage |  |  |  |  |  | 4,348 |  |  | 5.00 |

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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