Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net income including portion attributable to noncontrolling interest in earnings of joint venture	$ 83,393	$ 62,324
Reconciliation of net income including portion attributable to noncontrolling interest to net cash provided by operating activities:
Depreciation and amortization	28,126	27,142
Non-cash interest expense	5,910	5,522
Amortization of deferred financing costs	1,248	1,762
Stock-based compensation expense	7,243	8,413
Deferred income tax expense	14,162	7,084
Undistributed earnings of unconsolidated joint venture	(661)	(753)
Changes in operating assets and liabilities, net of effect of business acquisitions:
Accounts receivable, net	(69,232)	(17,458)
Prepaid expenses and other assets	(1,385)	(8,962)
Accounts payable and other accrued expenses	47,861	(3,651)
Accrued compensation and benefits	(24,263)	(13,430)
Income taxes payable and receivable	(10,091)	(8,584)
Other liabilities	3,030	9,108
Net cash provided by operating activities	85,341	68,517
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(7,138)	(5,767)
Cash paid for business acquisitions, net of cash acquired	(192,066)	(126,387)
Investment in unconsolidated joint venture, net		(4,265)
Other	(765)	1,019
Net cash used in investing activities	(199,969)	(135,400)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings under bank credit facilities, net of financing costs	625,251	193,987
Payments made under bank credit facilities	(445,250)	(328,653)
Proceeds from employee stock purchase plans	2,205	2,393
Proceeds from exercise of stock options	2,700	10,275
Repurchases of common stock	(209,680)	(20,016)
Other	(695)	456
Net cash used in financing activities	(25,469)	(141,558)
Effect of exchange rate changes on cash and cash equivalents	(675)	569
Net decrease in cash and cash equivalents	(140,772)	(207,872)
Cash and cash equivalents, beginning of period	164,817	254,543
Cash and cash equivalents, end of period	24,045	46,671
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds	49,721	38,184
Cash paid during the period for interest	6,531	5,502
Non-cash financing and investing activities:
Landlord-financed leasehold improvements	$ 3,947	$ 2,286