Short-Term Investments - Additional Information (Details)	3 Months Ended		9 Months Ended
	Mar. 31, 2022 USD ($) InvestmentPosition	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) InvestmentPosition	Mar. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	$ 1,149,336,000		$ 1,149,336,000		$ 655,232,000
Short-term investments mature within one year	$ 971,600,000		$ 971,600,000		$ 495,800,000
Percentage of short-term investments maturing within one year	85.00%		85.00%		76.00%
Short-term investments mature thereafter	$ 171,800,000		$ 171,800,000		$ 159,500,000
Percentage of short-term investments maturing thereafter	15.00%		15.00%		24.00%
Short-term investments realized gains or losses	$ 0	$ 0	$ 0	$ 0
Number of investments in unrealized loss positions | InvestmentPosition	300		300
Number of investment positions | InvestmentPosition	400		400
Allowance for credit losses on investments that were in an unrealized loss position	$ 0		$ 0		$ 0
Accrued Interest Receivable
Schedule Of Available For Sale Securities [Line Items]
Fair value	$ 3,200,000		$ 3,200,000		$ 2,500,000