CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income including portion attributable to noncontrolling interest in earnings of joint venture	$ 68,302	$ 75,970
Reconciliation of net income including portion attributable to noncontrolling interest to net cash provided by operating activities:
Depreciation and amortization	29,181	26,567
Non-cash interest expense	6,769	6,325
Amortization of deferred financing costs	1,129	1,012
Loss on extinguishment of debt	4,116
Stock-based compensation expense	5,785	5,901
Deferred income tax expense	14,957	9,866
Distribution of earnings from unconsolidated joint venture		3,545
Equity in earnings of unconsolidated joint ventures	(947)	(1,319)
Changes in operating assets and liabilities, net of effect of business acquisitions:
Accounts receivable, net	(6,178)	39,114
Prepaid expenses and other assets	(6,504)	(14,749)
Accounts payable and other accrued expenses	(49,913)	(26,794)
Accrued compensation and benefits	(21,816)	(27,730)
Income taxes payable and receivable	(4,545)	(13,940)
Supplemental retirement savings plan obligations and other long-term liabilities	4,241	12,267
Net cash provided by operating activities	44,577	96,035
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(7,143)	(10,032)
Cash paid for business acquisitions, net of cash acquired	(835,684)	(100,062)
Investment in unconsolidated joint venture		(1,421)
Other	(893)	(1,012)
Net cash used in investing activities	(843,720)	(112,527)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings under bank credit facilities	1,119,000	707,500
Principal payments made under bank credit facilities	(269,000)	(546,250)
Payment of financing costs under bank credit facilities	(13,222)	(612)
Proceeds from employee stock purchase plans	1,849	2,495
Proceeds from exercise of stock options		4,742
Repurchases of common stock	(1,884)	(125,411)
Payment of taxes for equity transactions	(7,936)	(4,489)
Other	3,026	(120)
Net cash provided by financing activities	831,833	37,855
Effect of exchange rate changes on cash and cash equivalents	1,146	406
Net increase in cash and cash equivalents	33,836	21,769
Cash and cash equivalents, beginning of period	64,337	15,740
Cash and cash equivalents, end of period	98,173	37,509
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds	29,414	48,645
Cash paid during the period for interest	7,817	6,684
Non-cash financing and investing activities:
Landlord-financed leasehold improvements		$ 2,216