Stock-Based Compensation - Narratives (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Jun. 30, 2025 USD ($) installment $ / shares shares	Jun. 30, 2024 USD ($) $ / shares	Jun. 30, 2023 USD ($) $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Excess tax benefits recognized | $	$ 7.5	$ 2.9	$ 1.1
PRSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, granted and forfeited specified target shares, percent	100.00%
Weighted-average fair value of RSUs granted (in dollars per shares) | $ / shares	$ 505.62	$ 314.54	$ 264.49
Total intrinsic value of RSUs that vested | $	$ 43.7	$ 26.9	$ 22.9
Unrecognized compensation cost | $	$ 31.5
Weighted-average period to recognize unrecognized compensation cost (in years)	1 year 8 months 15 days
PRSUs | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, specified target shares issued, percent	0.00%
PRSUs | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, specified target shares issued, percent	200.00%
RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average fair value of RSUs granted (in dollars per shares) | $ / shares	$ 496.46	$ 318.15	$ 264.49
Total intrinsic value of RSUs that vested | $	$ 56.8	$ 31.6	$ 19.0
Unrecognized compensation cost | $	$ 38.2
Weighted-average period to recognize unrecognized compensation cost (in years)	1 year 11 months 4 days
2016 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for grants (in shares)	2,400,000
Cumulative equity instruments awarded (in shares)	926,343
Cumulative equity instruments forfeited (in shares)	3
Share-based compensation arrangement by share-based payment award, purchase price of common stock, percent	95.00%
2016 Plan | PRSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, specified target shares issued, percent	200.00%
Number of installments | installment	4
Discount percentage	100.00%
Discount recognition period	3 years
ESPP Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for grants (in shares)	1,500,000
MSPP Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for grants (in shares)	500,000
DSPP Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for grants (in shares)	75,000
DSPP Plan | RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, purchase price of common stock, percent	100.00%