BUSINESS COMBINATIONS - Schedule of Components of Identifiable Intangible Assets Acquired (Details) - USD ($) $ in Millions	Sep. 30, 2025	Jun. 02, 2025	Feb. 26, 2025
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life	11 years 10 months 9 days
Developed technology
Finite-Lived Intangible Assets [Line Items]
Useful Life	4 years 7 months 6 days
Trade name
Finite-Lived Intangible Assets [Line Items]
Useful Life	2 years 7 months 24 days
TradePMR
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets			$ 81
TradePMR | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets			$ 49
Useful Life			13 years
TradePMR | Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets			$ 31
Useful Life			5 years
TradePMR | Trade name
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets			$ 1
Useful Life			4 years
Bitstamp
Indefinite-Lived Intangible Assets [Line Items]
Finite and indefinite intangible assets		$ 70
Bitstamp | Licenses
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		21
Bitstamp | Other
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		4
Bitstamp | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets		$ 5
Useful Life		18 years
Bitstamp | Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets		$ 39
Useful Life		6 years
Bitstamp | Trade name
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets		$ 1
Useful Life		2 years