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Income Taxes - Schedule of Reconciliation of income taxes paid, net of refunds received (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Federal:	$ 35,153
Total income taxes paid, net of refunds received	93,169	$ 134,782	$ 182,800
Virginia
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
State and Local:	15,100
California
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
State and Local:	6,000
All other
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
State and Local:	15,005
UK
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Foreign:	11,008
Germany
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Foreign:	8,619
All other
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Foreign:	$ 2,284