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CONTRACTUAL COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ARRANGEMENTS - Additional Information (Details) € in Millions, $ in Millions	1 Months Ended		3 Months Ended	12 Months Ended
	Aug. 31, 2024 USD ($)	May 31, 2021 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2025 USD ($) renewal_term	Jun. 30, 2025 EUR (€)	Jun. 30, 2024 USD ($)
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Unconsolidated investment				$ 30.3
Future commitment to fund				26.0
Estimate of possible loss				5.0
Loss contingency, settlement	$ 11.0		$ 9.9
Loss contingency, incremental reserve			$ 8.2			$ 10.3
Derivative liability				24.6
Currency Swap
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Derivative notional amount \| €					€ 880.0
Derivative liability				24.6
Treasury Lock
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Pre-tax loss		$ 11.0
Cash flow hedge gain (loss) to be reclassified within twelve months				1.1
Treasury Lock \| Itiviti
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Derivative term		10 years
Other Liabilities
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Other liabilities				$ 54.6
Information Technology Services Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Number of renewal terms option one \| renewal_term				1
Renewal term option one (in months)				12 months
Remaining commitment amount under agreement				$ 75.0
SIS Services Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Remaining commitment amount under agreement				137.3
IBM Private Cloud Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Remaining commitment amount under agreement				85.7
A W S Cloud Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Remaining commitment amount under agreement				$ 92.8