CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 119,440	$ 99,200
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	53,898	46,113
Amortization of deferred financing costs	3,371	2,101
Loss on disposal of fixed assets	975
Stock-based compensation expense	16,114	13,329
Deferred income tax expense	6,773	14,212
Equity in earnings of unconsolidated ventures	(167)	(229)
Gain on sale of assets	(1,545)
Changes in operating assets and liabilities, net of effect of business acquisitions:
Accounts receivable, net	62,360	42,184
Prepaid expenses and other assets	(3,895)	(9,773)
Accounts payable and other accrued expenses	(31,706)	(4,020)
Accrued compensation and benefits	(7,013)	(10,099)
Income taxes payable and receivable	(4,082)	(892)
Supplemental retirement savings plan obligations and other long-term liabilities	1,955	(2,750)
Net cash provided by operating activities	216,478	189,376
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(34,941)	(13,232)
Cash paid for business acquisitions, net of cash acquired	(5,786)	(587,821)
Proceeds from net working capital refund of acquired business	13,619
Proceeds from equity method investments	4,681
Other	1,597	151
Net cash used in investing activities	(20,830)	(600,902)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings under bank credit facilities	373,500	844,000
Principal payments made under bank credit facilities	(551,974)	(414,973)
Payment of financing costs under bank credit facilities		(9,290)
Proceeds from employee stock purchase plans	3,334	2,289
Repurchases of common stock	(3,367)	(2,400)
Payment of taxes for equity transactions	(10,580)	(7,479)
Other		457
Net cash (provided by) financing activities	(189,087)	412,604
Effect of exchange rate changes on cash and cash equivalents	(1,272)	(1,629)
Net increase (decrease) in cash and cash equivalents	5,289	(551)
Cash and cash equivalents, beginning of period	49,082	35,364
Cash and cash equivalents, end of year	54,371	34,813
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds	57,721	45,606
Cash paid during the period for interest	33,916	26,304
Non-cash financing and investing activities:
Accrued capital expenditures	$ 334	$ 956