Income Taxes - Effective Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Tax at federal statutory rate	$ (65,339)	$ (98,897)	$ (108,027)
State, net of the federal benefit	13,042	13,363	9,144
Effects of non-U.S. operations	15,163	(6,879)	5,436
Tax credits	(99,398)	(107,956)	(73,280)
Stock-based compensation	80,471	(41,692)	(69,276)
Non-deductible executive compensation	6,022	13,580	6,552
Non-deductible charges relating to the Notes	0	89,188	131,769
Intellectual property transfer	0	0	5,460
Australian R&D deductions forgone in lieu of R&D credit	30,303	32,661	22,404
Foreign taxes	2,457	4,491	1,052
Basis difference in investments	(43,564)	(36,853)	(13,789)
Change in reserves	132,528	14,179	10,091
Change in valuation allowance	98,613	172,033	136,284
Other	5,327	1,354	744
Total provision for income taxes	$ 175,625	$ 48,572	$ 64,564
Effective Tax Rate (%)	(56.00%)	(10.00%)	(13.00%)

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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