Revenues and Contract Balances - Schedule of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Jun. 30, 2025
Contract with Customer, Asset and Liability [Abstract]
Billed and billable receivables	$ 1,156,880	$ 1,098,237
Contract assets – current unbilled receivables	349,900	307,204
Contract assets – current costs to obtain	7,300	7,059
Contract assets – noncurrent unbilled receivables	17,198	14,694
Contract assets – noncurrent costs to obtain	14,242	13,897
Contract liabilities – current deferred revenue and other contract liabilities	(289,341)	(190,400)
Contract liabilities – noncurrent deferred revenue and other contract liabilities	$ (3,202)	$ (6,014)