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INVESTMENTS (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Schedule of Cost and Equity Method Investments |  |
Total equity method investments | $ 320.8 | $ 321.3
Total other equity investments | 62.5 | 62.4
Total investments | 383.3 | 383.7
Investment in 7Ridge Investments 3 LP |  |
Schedule of Cost and Equity Method Investments |  |
Total equity method investments | 320.8 | 321.3
Investment in Japannext Co., Ltd. |  |
Schedule of Cost and Equity Method Investments |  |
Total other equity investments | 36.5 | 36.5
Investment in Eris Innovations Holdings, LLC |  |
Schedule of Cost and Equity Method Investments |  |
Total other equity investments | 9.5 | 9.5
Investment in CSD Br |  |
Schedule of Cost and Equity Method Investments |  |
Total other equity investments | 5.9 | 5.9
Investment in Coin Metrics Inc. |  |
Schedule of Cost and Equity Method Investments |  |
Total other equity investments | 4.4 | 4.4
Investment in Vest Group Inc. |  |
Schedule of Cost and Equity Method Investments |  |
Total other equity investments | 2.9 | 2.9
Investment in OCC |  |
Schedule of Cost and Equity Method Investments |  |
Total other equity investments | 0.3 | 0.3
Other equity investments |  |
Schedule of Cost and Equity Method Investments |  |
Total other equity investments | $ 3.0 | $ 2.9

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