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Stock-Based Compensation (Additional Information) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized stock based compensation	$ 0.0	$ 0.0
Stock Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for future issuance	1,140,745
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period (in years)				4 years
Term of options (in years)				10 years
Fair value of stock options	$ 0.6	1.3	$ 1.9
Unrecognized compensation costs related to non-vested awards	0.0
Total intrinsic value of options exercised	0.4	10.6	10.0
Tax benefit from options exercised	$ 0.1	$ 0.3	$ 2.5
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period (in years)	3 years
Unrecognized compensation costs related to non-vested awards	$ 12.7
Weighted-average grant date fair value per share	$ 97.73	$ 89.65	$ 44.24
Fair value of units vested	$ 16.5	$ 15.9	$ 13.0
Unrecognized compensation costs related to non-vested awards expected to be recognized, years	1 year 8 months 12 days
Restricted Stock Units \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period (in years)	1 year
Performance Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of options (in years)	3 years
Unrecognized compensation costs related to non-vested awards	$ 21.8
Weighted-average grant date fair value per share	$ 96.86	$ 89.74	$ 50.02
Fair value of units vested	$ 20.4	$ 2.8	$ 4.1
Unrecognized compensation costs related to non-vested awards expected to be recognized, years	1 year