Share-based Compensation - Restricted Stock Units Award Activity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Mar. 31, 2025		Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment for tax withholding	$ 11,773		$ 8,084
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Instruments vested in period	$ 25,713		$ 21,192
Shares withheld for tax withholding obligation, value (in shares)	55
Payment for tax withholding	$ 10,662
Granted (in USD per share)	$ 207.94	[1]	$ 177.62
Restricted Stock Units (RSUs) | Related Party
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment for tax withholding	$ 24

[1] Weighted-average fair value per share at date of grant does not reflect any adjustments to awards granted prior to the Sphere Distribution.