Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Cash flows from/(used in) operating activities:
Net income before non-controlling interests	$ 260,476,000	$ 196,725,000	$ 119,010,000
Adjustments to reconcile net income to net cash from/(used in) operating activities:
Provision for doubtful receivables from clients	21,722,000	13,004,000	11,759,000
Depreciation	87,273,000	78,461,000	69,684,000
Amortization of intangible assets	65,619,000	52,114,000	31,400,000
Provision/(benefit) deferred income taxes	107,560,000	14,448,000	(5,134,000)
Equity from affiliates	212,000	(622,000)	869,000
Stock-based compensation	53,785,000	79,922,000	52,953,000
Other, net	7,595,000	(10,209,000)	(9,975,000)
Changes in operating assets and liabilities (net of business acquisitions)
Receivables from clients	(149,186,000)	(98,468,000)	(41,339,000)
Restricted cash	(19,925,000)	22,167,000	(49,756,000)
Other current assets	(1,862,000)	18,728,000	(2,205,000)
Other noncurrent assets	(10,318,000)	(39,343,000)	50,854,000
Accounts payable, accrued liabilities and deferred income	55,255,000	49,495,000	(99,228,000)
Employee-related liabilities	5,020,000	187,881,000	(169,287,000)
Fiduciary liabilities	25,566,000	(20,431,000)	49,756,000
Accrued retirement benefits and other employee-related liabilities	(76,752,000)	(55,859,000)	(71,292,000)
Professional liability claims reserves	(75,019,000)	(28,746,000)	16,171,000
Other current liabilities	(588,000)	10,305,000	(6,013,000)
Other noncurrent liabilities	(2,047,000)	20,944,000	(24,050,000)
Income tax related accounts	(38,328,000)	50,721,000	(8,801,000)
Cash flows from/(used in) operating activities	316,058,000	541,237,000	(84,624,000)
Cash flows (used in)/from investing activities:
Cash paid for business acquisitions	(438,932,000)	(141,885,000)	(200,025,000)
Cash acquired from business acquisitions	7,044,000	10,349,000	603,208,000
Purchases of fixed assets	(123,696,000)	(76,859,000)	(25,752,000)
Capitalized software costs	(34,926,000)	(22,487,000)	(19,632,000)
Purchases of held-to-maturity securities	0	(14,295,000)	0
Redemptions of held-to-maturity securities	0	14,295,000	0
Purchases of available-for-sale securities	(24,825,000)	(54,696,000)	(17,789,000)
Redemption of available-for-sale securities	68,503,000	72,703,000	16,191,000
Investment in affiliates	0	(5,805,000)	0
Proceeds from sale of investments	0	0	10,749,000
Proceeds from divestitures	4,497,000	17,772,000	4,486,000
Cash flows (used in)/from investing activities	(542,335,000)	(200,908,000)	371,436,000
Cash flows from/(used in) financing activities:
Borrowings under credit facility	755,300,000	75,000,000	126,333,000
Repayments under credit facility	(547,300,000)	(75,000,000)	(125,650,000)
Borrowings under term loan	250,000,000	0	0
Loan origination fees	(4,803,000)	0	(5,679,000)
Repayments of notes payable	(100,771,000)	(200,000,000)	0
Earn-out payments	(3,683,000)	0	0
Dividends paid	(26,448,000)	(21,599,000)	(15,249,000)
Repurchases of common stock	(108,896,000)	(30,646,000)	(34,922,000)
Payroll tax payments on vested shares	(33,183,000)	(26,596,000)	0
Issuances of common stock and excess tax benefit	8,573,000	6,158,000	6,068,000
Cash flows from/(used in) financing activities	188,789,000	(272,683,000)	(49,099,000)
Effect of exchange rates on cash	(13,256,000)	25,350,000	(11,618,000)
(Decrease)/increase in cash and cash equivalents	(50,744,000)	92,996,000	226,095,000
Cash and cash equivalents at beginning of period	528,923,000	435,927,000	209,832,000
Cash and cash equivalents at end of period	478,179,000	528,923,000	435,927,000
Supplemental disclosures:
Cash paid for interest	4,837,000	4,268,000	2,595,000
Cash paid for income taxes, net of refunds	55,873,000	64,117,000	58,624,000
Common stock withheld for taxes associated with vesting of Restricted A Shares	33,183,000	26,596,000
Common stock issued upon the vesting of our SEP plan restricted stock units	22,099,000
Issuance of stock in conjunction with the acquisitions of EMB and the Merger		11,250,000	1,357,379,000
Contingent payments accrued in conjunction with the acquisitions of EMB		20,026,000
Notes payable issued in connection with the Merger			200,000,000
Notes payable issued in connection with the tender offer			$ 98,469,000