CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenues	$ 8,627,824	$ 7,659,832	$ 6,702,546
Costs of revenues:
Direct costs	5,835,558	5,147,540	4,402,728
Indirect costs and selling expenses	1,832,956	1,720,439	1,590,754
Depreciation and amortization	195,125	142,145	141,564
Total costs of revenues	7,863,639	7,010,124	6,135,046
Income from operations	764,185	649,708	567,500
Interest expense and other, net	158,844	105,059	83,861
Income before income taxes	605,341	544,649	483,639
Income taxes	105,511	124,725	98,904
Net income	$ 499,830	$ 419,924	$ 384,735
Basic earnings per share (in dollars per shares)	$ 22.47	$ 18.76	$ 16.59
Diluted earnings per share (in dollars per shares)	$ 22.32	$ 18.60	$ 16.43
Weighted average basic shares outstanding (in shares)	22,247	22,381	23,196
Weighted average diluted shares outstanding (in shares)	22,393	22,573	23,413