Segment Information (Tabulation Of Business Segment Information Based On Current Segmentation) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011	Jun. 30, 2011
Segment Reporting Information [Line Items]
Total Consolidated Revenues	$ 540,807	$ 562,730	$ 1,583,894	$ 1,635,621
Amortization Expense	(2,800)	(1,497)	(7,844)	(4,449)
Depreciation and Other	410	(179)	1,372	1,429
Operating Income	95,454	137,227	189,075	384,595
Interest Income	110	435	520	1,239
Interest Expense	(650)	(348)	(1,653)	(841)
Net Gain on Sale of Assets			3,695
Net Interest and Other Income (Expense)	(540)	87	2,562	398
Total Consolidated Income Before Income Taxes	94,914	137,314	191,637	384,993
Segment Assets	2,112,202	2,070,427	2,112,202	2,070,427	1,850,503
Total Increase in Consolidated Long-lived Assets	75,162	37,636	373,035	91,299
Increase in Capital Assets from Acquisitions	12,822		47,947
Increase in Intangible Assets and Goodwill	33,200		232,921
Depreciation Expense	19,553	14,968	56,512	43,289
Intangible Asset Amortization Expense	2,800	1,497	7,844	4,449
Business, Technology And Management [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenues	338,790	378,698	1,001,959	1,102,359
Operating Income	64,667	99,351	183,850	283,342
Segment Assets	676,386	702,088	676,386	702,088
Total Increase in Consolidated Long-lived Assets	12,557	17,717	36,449	35,508
Depreciation Expense	9,726	6,696	28,244	19,685
Intangible Asset Amortization Expense
Medical And Healthcare [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenues	160,483	142,544	461,456	421,347
Operating Income	25,963	29,289	(2,681)	88,415
Segment Assets	1,021,224	1,017,875	1,021,224	1,017,875
Total Increase in Consolidated Long-lived Assets	7,931	8,308	258,108	27,246
Depreciation Expense	5,426	4,598	16,070	12,903
Intangible Asset Amortization Expense	1,631	105	4,383	315
International, K-12 And Professional Education [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenues	41,534	41,488	120,479	111,915
Operating Income	7,214	10,263	14,378	15,858
Segment Assets	279,331	229,954	279,331	229,954
Total Increase in Consolidated Long-lived Assets	47,931	3,696	56,861	9,482
Depreciation Expense	1,798	706	4,848	2,958
Intangible Asset Amortization Expense	1,169	1,392	3,461	4,134
Corporate [Member]
Segment Reporting Information [Line Items]
Segment Assets	135,261	120,510	135,261	120,510
Total Increase in Consolidated Long-lived Assets	6,743	7,915	21,617	19,063
Depreciation Expense	2,603	2,968	7,350	7,743
Capital Expenditures [Member]
Segment Reporting Information [Line Items]
Total Increase in Consolidated Long-lived Assets	$ 29,140	$ 37,636	$ 92,167	$ 91,299