Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net income including portion attributable to noncontrolling interest in earnings of joint venture	$ 124,524	$ 99,038
Reconciliation of net income including portion attributable to noncontrolling interest to net cash provided by operating activities:
Depreciation and amortization	41,894	41,919
Non-cash interest expense	8,946	8,359
Amortization of deferred financing costs	1,743	2,274
Stock-based compensation expense	11,095	13,109
Deferred income tax expense	18,109	7,805
Undistributed earnings of unconsolidated joint venture	(1,133)	(1,187)
Other	1,274
Changes in operating assets and liabilities, net of effect of business acquisitions:
Accounts receivable, net	(73,120)	(24,787)
Prepaid expenses and other assets	(9,397)	(15,314)
Accounts payable and other accrued expenses	35,571	5,615
Accrued compensation and benefits	(12,037)	6,392
Income taxes payable and receivable	(9,787)	(9,079)
Other liabilities	7,116	11,508
Net cash provided by operating activities	144,798	145,652
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,794)	(9,170)
Cash paid for business acquisitions, net of cash acquired	(179,746)	(129,621)
Investment in unconsolidated joint venture, net		(4,264)
Other	(1,128)	749
Net cash used in investing activities	(193,668)	(142,306)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings under bank credit facilities, net of financing costs	853,751	193,978
Payments made under bank credit facilities	(700,625)	(330,528)
Payment of contingent consideration	(20,255)
Proceeds from employee stock purchase plans	3,118	3,264
Proceeds from exercise of stock options	7,410	18,136
Repurchases of common stock	(209,680)	(47,040)
Other	(589)	1,291
Net cash used in financing activities	(66,870)	(160,899)
Effect of exchange rate changes on cash and cash equivalents	(148)	1,358
Net decrease in cash and cash equivalents	(115,888)	(156,195)
Cash and cash equivalents, beginning of period	164,817	254,543
Cash and cash equivalents, end of period	48,929	98,348
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds	70,973	57,338
Cash paid during the period for interest	8,108	6,486
Non-cash financing and investing activities:
Landlord-financed leasehold improvements	$ 4,514	$ 2,554