Revenues and Contract Balances - Schedule of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024
Contract with Customer, Asset and Liability [Abstract]
Billed and billable receivables	$ 906,720	$ 885,552
Contract assets – current unbilled receivables	162,891	145,759
Contract assets – current costs to obtain	6,505	6,142
Contract assets – noncurrent unbilled receivables	14,130	13,311
Contract assets – noncurrent costs to obtain	14,327	12,310
Contract liabilities – current deferred revenue and other contract liabilities	(158,624)	(139,745)
Contract liabilities – noncurrent deferred revenue and other contract liabilities	$ (4,624)	$ (4,607)