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Variable Interest Entities (Tables) | 3 Months Ended
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Mar. 31, 2025
Disclosure Variable Interest Entities Schedule Of Equity Method Investments [Abstract] |
Affordable Housing Tax Credit Investments | A summary of Regions’ tax credit investments and related loans and letters of credit, representing Regions’ maximum exposure to loss, is as follows:
| March 31, 2025 |  | December 31, 2024
| (In millions)
Tax credit investments included in other assets | $ | 1,559 |  |  | $ | 1,471 |
Unfunded tax credit commitments included in other liabilities | 546 |  |  | 590 |
Loans and letters of credit commitments | 628 |  |  | 663 |
Funded portion of loans and letters of credit commitments | 288 |  |  | 336 |
| Three Months Ended March 31 |  |
| 2025 |  | 2024 |  |  |  |
| (In millions)
Tax credits and other tax benefits recognized | $ | 54 |  |  | $ | 55 |  |  |  |  |
Tax credit amortization expense included in income tax expense | 47 |  |  | 46 |  |  |  |  |

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- Definition Disclosure - Variable Interest Entities (Schedule Of Equity Method Investments) [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for Affordable Housing Program (AHP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/942/tableOfContent + Details
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