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INVESTMENTS (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Total equity method investments |  | $ 317.2 | $ 321.3
Total other equity investments |  | 62.4 | 62.4
Total investments |  | 379.6 | 383.7
Investment in 7Ridge Investments 3 LP |  |  |
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Total equity method investments |  | 317.2 | 321.3
Investment in Japannext Co., Ltd. |  |  |
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Total other equity investments |  | 36.5 | 36.5
Investment in Eris Innovations Holdings, LLC |  |  |
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Total other equity investments |  | 9.5 | 9.5
Investment in CSD Br |  |  |
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Total other equity investments |  | 5.9 | 5.9
Investment in Coin Metrics Inc. |  |  |
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Total other equity investments |  | 4.4 | 4.4
Investment in Vest Group Inc. |  |  |
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Total other equity investments |  | 2.9 | 2.9
Investment in OCC |  |  |
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Total other equity investments |  | 0.3 | 0.3
Other equity investments |  |  |
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Total other equity investments |  | $ 2.9 | $ 2.9
Globacap Technology Limited |  |  |
Equity Method Investments and Equity Securities Without Readily Determinable Fair Value [Line Items] |  |  |
Equity securities without RDFV, impairment loss | $ 16.0 |  |

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