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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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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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