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CLEARING OPERATIONS - Valuation (Details) $ / shares in Units, $ in Millions | Sep. 30, 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 USD 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 USD 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 USD 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 USD 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 USD per share) | $ / shares |  | $ 1
Fair Value |  | $ 0.5

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- Definition Fair value of asset to safeguard crypto-asset held for platform user. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section FF -Paragraph Question 1 -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 405 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.FF.Q1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476188/405-10-S99-1 + Details
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