Revenues and Contract Balances - Schedule of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023
Contract with Customer, Asset and Liability [Abstract]
Billed and billable receivables	$ 852,523	$ 763,547
Contract assets – current unbilled receivables	150,115	131,399
Contract assets – current costs to obtain	5,512	5,163
Contract assets – noncurrent unbilled receivables	13,296	11,857
Contract assets – noncurrent costs to obtain	9,840	8,294
Contract liabilities – current deferred revenue and other contract liabilities	(127,806)	(138,469)
Contract liabilities – noncurrent deferred revenue and other contract liabilities	$ (5,613)	$ (5,522)