CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net income including portion attributable to noncontrolling interest in earnings of joint venture	$ 99,311	$ 114,457
Reconciliation of net income including portion attributable to noncontrolling interest to net cash provided by operating activities:
Depreciation and amortization	47,098	40,334
Non-cash interest expense	10,245	9,573
Amortization of deferred financing costs	2,178	1,543
Loss on extinguishment of debt	4,116
Stock-based compensation expense	8,890	6,394
Deferred income tax expense	17,420	16,351
Distribution of earnings from unconsolidated joint venture	1,762	5,627
Equity in earnings of unconsolidated joint ventures	(1,420)	(2,074)
Changes in operating assets and liabilities, net of effect of business acquisitions:
Accounts receivable, net	61,700	19,032
Prepaid expenses and other assets	(12,403)	(19,888)
Accounts payable and other accrued expenses	(71,638)	(26,872)
Accrued compensation and benefits	(23,261)	(23,487)
Income taxes payable and receivable	(489)	(8,159)
Supplemental retirement savings plan obligations and other long-term liabilities	2,793	15,183
Net cash provided by operating activities	146,302	148,014
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(11,636)	(12,759)
Cash paid for business acquisitions, net of cash acquired	(838,427)	(105,420)
Investment in unconsolidated joint venture		(838)
Other	(1,020)	(2,658)
Net cash used in investing activities	(851,083)	(121,675)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings under bank credit facilities	1,162,000	789,000
Principal payments made under bank credit facilities	(452,000)	(649,625)
Payment of financing costs under bank credit facilities	(13,368)	(612)
Payment of contingent consideration	(3,294)	(3,187)
Proceeds from employee stock purchase plans	2,681	3,486
Proceeds from exercise of stock options		7,244
Repurchases of common stock	(2,804)	(126,507)
Payment of taxes on equity transactions	(9,493)	(5,582)
Other	3,752	105
Net cash provided by financing activities	687,474	14,322
Effect of exchange rate changes on cash and cash equivalents	1,339	(145)
Net (decrease) increase in cash and cash equivalents	(15,968)	40,516
Cash and cash equivalents, beginning of period	64,337	15,740
Cash and cash equivalents, end of period	48,369	56,256
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds	40,594	59,876
Cash paid during the period for interest	13,425	8,466
Non-cash financing and investing activities:
Landlord-financed leasehold improvements	$ 2,190	$ 2,634