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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
	Jul. 31, 2024 USD ($)	May 31, 2021 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2024 USD ($) renewal_term	Jun. 30, 2023 USD ($)	Jan. 31, 2022 EUR (€)
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Unconsolidated investment				$ 34.3
Future commitment to fund				0.4
Estimate of possible loss				5.0
Loss contingency, settlement			$ 9.9
Loss contingency, incremental reserve			$ 8.2	10.3
Derivative asset				59.9	$ 66.7
Subsequent Event
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Loss contingency, settlement	$ 11.0
Currency Swap
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Derivative notional amount \| €						€ 880
Derivative asset				59.9
Treasury Lock \| Itiviti
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Pre-tax loss		$ 11.0
Derivative term		10 years
Cash flow hedge gain (loss) to be reclassified within twelve months				1.1
Other Liabilities
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Other liabilities				$ 53.0
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				$ 113.4
IBM Private Cloud Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Remaining commitment amount under agreement				106.3
A W S Cloud Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Remaining commitment amount under agreement				$ 136.1