Short-Term Investments and Funds Held for Customers - Additional Information (Details)	3 Months Ended		9 Months Ended
	Mar. 31, 2026 USD ($) position	Mar. 31, 2025 USD ($)	Mar. 31, 2026 USD ($) position	Mar. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Short-term investments		Short-term investments		Short-term investments
Accrued interest receivable	$ 8,100,000		$ 8,100,000		$ 8,900,000
Amortized cost	1,726,442,000		1,726,442,000		1,621,083,000
Fair value	$ 1,728,388,000		$ 1,728,388,000		1,628,767,000
Number of unrealized loss investment positions | position	210		210
Number of investment positions | position	760		760
Short-term investments realized gains or losses	$ 0	$ 0	$ 0	$ 0
Accrued Interest Receivable
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	14,300,000		14,300,000		12,400,000
Fair value	$ 14,300,000		$ 14,300,000		$ 12,400,000