CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014
Current Assets:
Cash and Cash Equivalents	$ 402,115	$ 358,188	$ 396,815
Marketable Securities and Investments	3,577us-gaap_MarketableSecuritiesCurrent	3,448us-gaap_MarketableSecuritiesCurrent	3,333us-gaap_MarketableSecuritiesCurrent
Restricted Cash	9,658	8,347	8,023
Accounts Receivable, Net	149,586us-gaap_AccountsReceivableNetCurrent	132,621us-gaap_AccountsReceivableNetCurrent	161,202us-gaap_AccountsReceivableNetCurrent
Deferred Income Taxes, Net	45,163us-gaap_DeferredTaxAssetsNetCurrent	39,679us-gaap_DeferredTaxAssetsNetCurrent	29,458us-gaap_DeferredTaxAssetsNetCurrent
Prepaid Expenses and Other	57,822	34,808	39,665
Total Current Assets	667,921us-gaap_AssetsCurrent	577,091us-gaap_AssetsCurrent	638,496us-gaap_AssetsCurrent
Land, Building and Equipment:
Land	63,282us-gaap_Land	68,185us-gaap_Land	66,775us-gaap_Land
Building	470,706us-gaap_BuildingsAndImprovementsGross	464,944us-gaap_BuildingsAndImprovementsGross	454,099us-gaap_BuildingsAndImprovementsGross
Equipment	500,902us-gaap_MachineryAndEquipmentGross	488,322us-gaap_MachineryAndEquipmentGross	476,688us-gaap_MachineryAndEquipmentGross
Construction in Progress	32,292us-gaap_ConstructionInProgressGross	17,405us-gaap_ConstructionInProgressGross	19,957us-gaap_ConstructionInProgressGross
Property, Plant and Equipment, Gross, Total	1,067,182us-gaap_PropertyPlantAndEquipmentGross	1,038,856us-gaap_PropertyPlantAndEquipmentGross	1,017,519us-gaap_PropertyPlantAndEquipmentGross
Accumulated Depreciation	(522,559)	(483,019)	(466,008)
Land, Building and Equipment, Net	544,623us-gaap_PropertyPlantAndEquipmentNet	555,837us-gaap_PropertyPlantAndEquipmentNet	551,511us-gaap_PropertyPlantAndEquipmentNet
Other Assets:
Intangible Assets, Net	325,000	294,932	294,497
Goodwill	561,406us-gaap_Goodwill	519,879us-gaap_Goodwill	517,065us-gaap_Goodwill
Perkins Program Fund, Net	13,450dv_PerkinsProgramFundNet	13,450dv_PerkinsProgramFundNet	13,450dv_PerkinsProgramFundNet
Other Assets	36,277us-gaap_OtherAssetsNoncurrent	36,447us-gaap_OtherAssetsNoncurrent	33,846us-gaap_OtherAssetsNoncurrent
Total Other Assets	936,133us-gaap_AssetsNoncurrent	864,708us-gaap_AssetsNoncurrent	858,858us-gaap_AssetsNoncurrent
TOTAL ASSETS	2,148,677us-gaap_Assets	1,997,636us-gaap_Assets	2,048,865us-gaap_Assets
Current Liabilities:
Accounts Payable	58,531us-gaap_AccountsPayableCurrent	52,260us-gaap_AccountsPayableCurrent	54,594us-gaap_AccountsPayableCurrent
Accrued Salaries, Wages and Benefits	90,503	94,501	91,811
Accrued Expenses	74,073us-gaap_AccruedLiabilitiesCurrent	70,891us-gaap_AccruedLiabilitiesCurrent	64,723us-gaap_AccruedLiabilitiesCurrent
Deferred Revenue	176,451us-gaap_DeferredRevenue	99,160us-gaap_DeferredRevenue	194,560us-gaap_DeferredRevenue
Total Current Liabilities	399,558us-gaap_LiabilitiesCurrent	316,812us-gaap_LiabilitiesCurrent	405,688us-gaap_LiabilitiesCurrent
Other Liabilities:
Deferred Income Taxes, Net	71,153	47,921	54,574
Deferred Rent and Other	103,920us-gaap_DeferredRentCreditNoncurrent	93,117us-gaap_DeferredRentCreditNoncurrent	89,095us-gaap_DeferredRentCreditNoncurrent
Total Other Liabilities	175,073us-gaap_LiabilitiesNoncurrent	141,038us-gaap_LiabilitiesNoncurrent	143,669us-gaap_LiabilitiesNoncurrent
TOTAL LIABILITIES	574,631us-gaap_Liabilities	457,850us-gaap_Liabilities	549,357us-gaap_Liabilities
COMMITMENTS AND CONTINGENCIES (NOTE 13)
NONCONTROLLING INTEREST	9,100us-gaap_MinorityInterest	6,393us-gaap_MinorityInterest	6,189us-gaap_MinorityInterest
SHAREHOLDERS' EQUITY
Common Stock, $0.01 Par Value, 200,000,000 Shares Authorized: 63,701,000, 63,624,000 and 63,465,000 Shares Issued and Outstanding at March 31, 2015, June 30, 2014 and March 31, 2014, respectively	769us-gaap_CommonStockValue	753us-gaap_CommonStockValue	754us-gaap_CommonStockValue
Additional Paid-in Capital	343,339	320,703	311,851
Retained Earnings	1,778,239	1,682,071	1,655,283
Accumulated Other Comprehensive Loss	(78,876)	(15,394)	(19,604)
Treasury Stock, at Cost, 12,208,000, 11,655,000 and 11,661,000 Shares, respectively	(478,525)us-gaap_TreasuryStockValue	(454,740)us-gaap_TreasuryStockValue	(454,965)us-gaap_TreasuryStockValue
TOTAL SHAREHOLDERS' EQUITY	1,564,946us-gaap_StockholdersEquity	1,533,393us-gaap_StockholdersEquity	1,493,319us-gaap_StockholdersEquity
TOTAL LIABILITIES AND EQUITY	$ 2,148,677	$ 1,997,636	$ 2,048,865

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