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Regulatory Capital (Tables) | 12 Months Ended
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Dec. 31, 2023
Regulatory Capital Disclosure [Abstract] |
Schedule of Compliance with Regulatory Capital | The following table summarizes regulatory capital information at December 31, 2023 and 2022 for Synovus and Synovus Bank.
| Actual Capital |  | Minimum Requirement For Capital Adequacy(1) |  | To Be Well-Capitalized Under Prompt Corrective Action Provisions(2)
(dollars in thousands) | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Synovus Financial Corp. |  |  |  |  |  |  |  |  |  |  |
CET1 capital | $ | 5,206,521 |  |  | $ | 4,926,194 |  |  | $ | 2,291,552 |  |  | $ | 2,302,824 |  |  | N/A |  | N/A
Tier 1 risk-based capital | 5,743,666 |  |  | 5,463,339 |  |  | 3,055,403 |  |  | 3,070,432 |  |  | N/A |  | N/A
Total risk-based capital | 6,654,224 |  |  | 6,415,681 |  |  | 4,073,871 |  |  | 4,093,909 |  |  | N/A |  | N/A
CET1 capital ratio | 10.22 | % |  | 9.63 | % |  | 4.50 | % |  | 4.50 | % |  | N/A |  | N/A
Tier 1 risk-based capital ratio | 11.28 |  |  | 10.68 |  |  | 6.00 |  |  | 6.00 |  |  | N/A |  | N/A
Total risk-based capital ratio | 13.07 |  |  | 12.54 |  |  | 8.00 |  |  | 8.00 |  |  | N/A |  | N/A
Leverage ratio | 9.49 |  |  | 9.07 |  |  | 4.00 |  |  | 4.00 |  |  | N/A |  | N/A
Synovus Bank |  |  |  |  |  |  |  |  |  |  |
CET1 capital | $ | 5,559,624 |  |  | $ | 5,446,703 |  |  | $ | 2,288,092 |  |  | $ | 2,300,126 |  |  | $ | 3,305,022 |  |  | $ | 3,322,404 |
Tier 1 risk-based capital | 5,559,624 |  |  | 5,446,703 |  |  | 3,050,789 |  |  | 3,066,835 |  |  | 4,067,719 |  |  | 4,089,113 |
Total risk-based capital | 6,249,947 |  |  | 6,079,152 |  |  | 4,067,719 |  |  | 4,089,113 |  |  | 5,084,649 |  |  | 5,111,391 |
CET1 capital ratio | 10.93 | % |  | 10.66 | % |  | 4.50 | % |  | 4.50 | % |  | 6.50 | % |  | 6.50 | %
Tier 1 risk-based capital ratio | 10.93 |  |  | 10.66 |  |  | 6.00 |  |  | 6.00 |  |  | 8.00 |  |  | 8.00 |
Total risk-based capital ratio | 12.29 |  |  | 11.89 |  |  | 8.00 |  |  | 8.00 |  |  | 10.00 |  |  | 10.00 |
Leverage ratio | 9.21 |  |  | 9.06 |  |  | 4.00 |  |  | 4.00 |  |  | 5.00 |  |  | 5.00 |
(1) The additional capital conservation buffer in effect is 2.5%. (2) The prompt corrective action provisions are applicable at the bank level only.

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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 -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B + Details
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