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Stock-based Compensation and Stockholders' Equity - Stock Option Activity Narrative (Details)		1 Months Ended		12 Months Ended
	Mar. 02, 2024 day	Nov. 30, 2023 tranche operationalMilestone $ / shares shares	Mar. 31, 2021 shares	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) shares	Jun. 30, 2023 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation amount capitalized				$ 500,000	$ 0	$ 0
Grants in period (in shares) | shares				5,302,345
Stock-based compensation expense before taxes				$ 314,452,000	231,507,000	54,433,000
Tax benefit from options exercised				28,300,000
Total pretax intrinsic value of options exercised				182,900,000	475,000,000.0	110,100,000
Payment for employees tax obligations				142,457,000	174,354,000	$ 28,197,000
2021 CEO Performance Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares) | shares			10,000,000
Stock-based compensation expense before taxes				0	700,000
Unrecognized compensation cost related to non-vested stock-based awards				$ 0	0
2021 CEO Performance Stock Option | Milestone Five
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock price milestone (USD per share) | $ / shares				$ 12.00
2023 CEO Performance Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares) | shares		5,000,000
Stock-based compensation expense before taxes				$ 13,400,000	$ 49,100,000
Unrecognized compensation cost related to non-vested stock-based awards				$ 5,500,000
Number of vesting tranches | tranche		5
Market price milestone, number of trading days | day	60
Number of operational milestones | operationalMilestone		5
Unrecognized compensation cost related to non-vested stock based awards, period for recognition				1 year 6 months
2023 CEO Performance Award | Milestone Five
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock price milestone (USD per share) | $ / shares		$ 110.00		$ 110
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested stock-based awards				$ 221,300,000
Unrecognized compensation cost related to non-vested stock based awards, period for recognition				2 years 7 months 24 days
Shares withheld for taxes (in shares) | shares				765,888	0	0
Payment for employees tax obligations				$ 27,200,000	$ 0	$ 0

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