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CLEARING OPERATIONS - Valuation (Details) $ / shares in Units, $ in Millions | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) unit $ / shares
--- | --- | ---
Digital Assets - Safeguarded Assets and Safeguarded Liabilities |  |
Fair Value | $ 0.0 | $ 51.3
Bitcoin ("BTC") |  |
Digital Assets - Safeguarded Assets and Safeguarded Liabilities |  |
Number of Units | unit |  | 821
Valuation per unit (in dollars per share) | $ / shares |  | $ 42,492
Fair Value |  | $ 34.9
Ethereum ("ETH") |  |
Digital Assets - Safeguarded Assets and Safeguarded Liabilities |  |
Number of Units | unit |  | 6,270
Valuation per unit (in dollars per share) | $ / shares |  | $ 2,282
Fair Value |  | $ 14.3
Litecoin ("LTC") |  |
Digital Assets - Safeguarded Assets and Safeguarded Liabilities |  |
Number of Units | unit |  | 16,329
Valuation per unit (in dollars per share) | $ / shares |  | $ 74
Fair Value |  | $ 1.2
Bitcoin Cash ("BCH") |  |
Digital Assets - Safeguarded Assets and Safeguarded Liabilities |  |
Number of Units | unit |  | 1,374
Valuation per unit (in dollars per share) | $ / shares |  | $ 261
Fair Value |  | $ 0.4
USD Coin ("USDC") |  |
Digital Assets - Safeguarded Assets and Safeguarded Liabilities |  |
Number of Units | unit |  | 506,652
Valuation per unit (in dollars per share) | $ / shares |  | $ 1
Fair Value |  | $ 0.5

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