Label	Element	Value
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	$ 14,664,000
Stock Issued During Period, Value, Stock Options Exercised	us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised	5,621,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	(5,632,000)
Recapitilization as a result of Transactions and Merger	azpn_RecapitilizationAsAResultOfTransactionsAndMerger	5,357,121,000
Additional Paid-in Capital [Member]
Stock Issued During Period, Value, Stock Options Exercised	us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised	5,621,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	(5,632,000)
Recapitilization as a result of Transactions and Merger	azpn_RecapitilizationAsAResultOfTransactionsAndMerger	13,092,917,000
Retained Earnings [Member]
Net Income (Loss)	us-gaap_NetIncomeLoss	66,369,000
Net Income (Loss)	us-gaap_NetIncomeLoss	$ (13,223,000)
Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period	us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised	61,292
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	58,468
Heritage AspenTech [Member]
Amortization of Intangible Assets	us-gaap_AmortizationOfIntangibleAssets	$ 430,000,000
OSI Inc. [Member]
Payments to Acquire Businesses, Net of Cash Acquired	us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired	1,588,802,000
Deferred Revenue	us-gaap_DeferredRevenue	$ 13,700,000