Short-Term Investments - Schedule of Short-Term Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Schedule Of Available For Sale Securities [Line Items]
Short-term investments, Amortized cost	$ 1,118,638	$ 655,232
Short-term investments, Gross unrealized gains	15	143
Short-term investments, Gross unrealized losses	(1,483)	(61)
Short-term investments	1,117,170	655,314
Corporate Bonds
Schedule Of Available For Sale Securities [Line Items]
Short-term investments, Amortized cost	692,480	466,403
Short-term investments, Gross unrealized gains	12	111
Short-term investments, Gross unrealized losses	(938)	(55)
Short-term investments	691,554	466,459
U.S. Treasury Securities
Schedule Of Available For Sale Securities [Line Items]
Short-term investments, Amortized cost	359,325	155,663
Short-term investments, Gross unrealized gains	3	16
Short-term investments, Gross unrealized losses	(462)	(5)
Short-term investments	358,866	155,674
Asset Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Short-term investments, Amortized cost	57,261	26,391
Short-term investments, Gross unrealized gains	0	16
Short-term investments, Gross unrealized losses	(83)	(1)
Short-term investments	57,178	26,406
Certificates of Deposit
Schedule Of Available For Sale Securities [Line Items]
Short-term investments, Amortized cost	9,572	6,775
Short-term investments, Gross unrealized gains	0	0
Short-term investments, Gross unrealized losses	0	0
Short-term investments	$ 9,572	$ 6,775