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REGULATORY CAPITAL - Schedule of Regulatory Capital Ratio (Details) | Dec. 31, 2025
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Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] |
Basel III Minimums, Total risk-based capital | 0.0800
Basel III Minimums, Tier 1 risk-based capital | 0.0600
Basel III Minimums, Common equity Tier 1 | 0.0450
Basel III Minimums, Tier 1 leverage | 0.0400
Basel III Conservation Buffers, Total risk-based capital | 0.0250
Basel III Conservation Buffers, Tier 1 risk-based capital | 0.0250
Basel III Conservation Buffers, Common equity Tier 1 | 0.0250
Basel III Conservation Buffers, Tier 1 leverage | 0
Basel III Requirements, Total risk-based capital | 0.1050
Basel III Requirements, Tier 1 risk-based capital | 0.0850
Basel III Requirements, Common equity Tier 1 | 0.0700
Basel III Requirements, Tier 1 leverage | 0.0400

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