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REGULATORY MATTERS - Narrative (Details) | Dec. 31, 2024 | Dec. 31, 2023
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Mortgage Banking [Abstract] |  |
Required Minimum Capital | 9.00% | 8.50%

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- Definition The minimum common equity tier 1 ratio (CET1 divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References No definition available. + Details
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Namespace Prefix: | cfg_
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Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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