Short-Term Investments - Additional Information (Details)	12 Months Ended
	Jun. 30, 2022 USD ($) InvestmentPosition	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Schedule Of Available For Sale Securities [Line Items]
Accrued interest receivable	$ 3,000,000	$ 2,500,000
Short-term investments mature within one year	$ 961,800,000	$ 495,800,000
Percentage of short-term investments maturing within one year	87.00%	76.00%
Short-term investments mature thereafter	$ 146,700,000	$ 159,500,000
Percentage of short-term investments maturing thereafter	13.00%	24.00%
Number of investments in unrealized loss positions | InvestmentPosition	270
Short-term investments realized gains or losses	$ 0	$ 0	$ 0
Allowance for credit losses on investments that were in an unrealized loss position	$ 0	$ 0
Minimum
Schedule Of Available For Sale Securities [Line Items]
Number of investment positions | InvestmentPosition	360