CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Current Assets:
Cash and Cash Equivalents	$ 379,965	$ 358,188	$ 262,034
Marketable Securities and Investments	3,520us-gaap_MarketableSecuritiesCurrent	3,448us-gaap_MarketableSecuritiesCurrent	3,263us-gaap_MarketableSecuritiesCurrent
Restricted Cash	10,534	8,347	11,873
Accounts Receivable, Net	89,318us-gaap_AccountsReceivableNetCurrent	132,621us-gaap_AccountsReceivableNetCurrent	117,812us-gaap_AccountsReceivableNetCurrent
Deferred Income Taxes, Net	45,104us-gaap_DeferredTaxAssetsNetCurrent	39,679us-gaap_DeferredTaxAssetsNetCurrent	31,169us-gaap_DeferredTaxAssetsNetCurrent
Prepaid Expenses and Other	44,338	34,808	49,594
Total Current Assets	572,779us-gaap_AssetsCurrent	577,091us-gaap_AssetsCurrent	475,745us-gaap_AssetsCurrent
Land, Building and Equipment:
Land	63,261us-gaap_Land	68,185us-gaap_Land	66,539us-gaap_Land
Building	467,330us-gaap_BuildingsAndImprovementsGross	464,944us-gaap_BuildingsAndImprovementsGross	429,463us-gaap_BuildingsAndImprovementsGross
Equipment	492,716us-gaap_MachineryAndEquipmentGross	488,322us-gaap_MachineryAndEquipmentGross	472,944us-gaap_MachineryAndEquipmentGross
Construction in Progress	26,666us-gaap_ConstructionInProgressGross	17,405us-gaap_ConstructionInProgressGross	44,115us-gaap_ConstructionInProgressGross
Property, Plant and Equipment, Gross, Total	1,049,973us-gaap_PropertyPlantAndEquipmentGross	1,038,856us-gaap_PropertyPlantAndEquipmentGross	1,013,061us-gaap_PropertyPlantAndEquipmentGross
Accumulated Depreciation	(506,984)	(483,019)	(455,018)
Land, Building and Equipment, Net	542,989us-gaap_PropertyPlantAndEquipmentNet	555,837us-gaap_PropertyPlantAndEquipmentNet	558,043us-gaap_PropertyPlantAndEquipmentNet
Other Assets:
Intangible Assets, Net	289,160	294,932	293,720
Goodwill	519,748us-gaap_Goodwill	519,879us-gaap_Goodwill	514,757us-gaap_Goodwill
Perkins Program Fund, Net	13,450dv_PerkinsProgramFundNet	13,450dv_PerkinsProgramFundNet	13,450dv_PerkinsProgramFundNet
Other Assets	29,740us-gaap_OtherAssetsNoncurrent	36,447us-gaap_OtherAssetsNoncurrent	33,398us-gaap_OtherAssetsNoncurrent
Total Other Assets	852,098us-gaap_AssetsNoncurrent	864,708us-gaap_AssetsNoncurrent	855,325us-gaap_AssetsNoncurrent
TOTAL ASSETS	1,967,866us-gaap_Assets	1,997,636us-gaap_Assets	1,889,113us-gaap_Assets
Current Liabilities:
Accounts Payable	55,737us-gaap_AccountsPayableCurrent	52,260us-gaap_AccountsPayableCurrent	62,721us-gaap_AccountsPayableCurrent
Accrued Salaries, Wages and Benefits	73,460	94,501	77,447
Accrued Expenses	69,427us-gaap_AccruedLiabilitiesCurrent	70,891us-gaap_AccruedLiabilitiesCurrent	69,259us-gaap_AccruedLiabilitiesCurrent
Deferred and Advance Tuition	66,356us-gaap_DeferredRevenue	99,160us-gaap_DeferredRevenue	97,725us-gaap_DeferredRevenue
Total Current Liabilities	264,980us-gaap_LiabilitiesCurrent	316,812us-gaap_LiabilitiesCurrent	307,152us-gaap_LiabilitiesCurrent
Other Liabilities:
Deferred Income Taxes, Net	48,339	47,921	59,941
Deferred Rent and Other	90,533us-gaap_DeferredRentCreditNoncurrent	93,117us-gaap_DeferredRentCreditNoncurrent	91,054us-gaap_DeferredRentCreditNoncurrent
Total Other Liabilities	138,872us-gaap_LiabilitiesNoncurrent	141,038us-gaap_LiabilitiesNoncurrent	150,995us-gaap_LiabilitiesNoncurrent
TOTAL LIABILITIES	403,852us-gaap_Liabilities	457,850us-gaap_Liabilities	458,147us-gaap_Liabilities
COMMITMENTS AND CONTINGENCIES (NOTE 13)
NONCONTROLLING INTEREST	8,139us-gaap_MinorityInterest	6,393us-gaap_MinorityInterest	5,975us-gaap_MinorityInterest
SHAREHOLDERS' EQUITY
Common Stock, $0.01 Par Value, 200,000,000 Shares Authorized: 63,840,000, 63,624,000 and 63,332,000 Shares Issued and Outstanding at December 31, 2014, June 30, 2014 and December 31, 2013, respectively	769us-gaap_CommonStockValue	753us-gaap_CommonStockValue	752us-gaap_CommonStockValue
Additional Paid-in Capital	338,710	320,703	304,807
Retained Earnings	1,731,976	1,682,071	1,599,985
Accumulated Other Comprehensive Loss	(44,066)	(15,394)	(25,573)
Treasury Stock, at Cost, 12,022,000, 11,655,000 and 11,661,000 Shares, respectively	(471,514)us-gaap_TreasuryStockValue	(454,740)us-gaap_TreasuryStockValue	(454,980)us-gaap_TreasuryStockValue
TOTAL SHAREHOLDERS' EQUITY	1,555,875us-gaap_StockholdersEquity	1,533,393us-gaap_StockholdersEquity	1,424,991us-gaap_StockholdersEquity
TOTAL LIABILITIES AND EQUITY	$ 1,967,866	$ 1,997,636	$ 1,889,113

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