Revenues - Contract Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Contract with Customer, Asset and Liability [Abstract]
Billed and billable receivables	$ 800,597	$ 763,921
Contract assets – current unbilled receivables	125,547	115,930
Contract assets – current costs to obtain	5,167	4,144
Contract assets – noncurrent unbilled receivables	10,199	12,159
Contract assets – noncurrent costs to obtain	10,703	9,584
Contract liabilities – current deferred revenue and other contract liabilities	(84,810)	(70,907)
Contract liabilities – noncurrent deferred revenue and other contract liabilities	$ (7,552)	$ (6,837)