Significant Accounting Policies - Revenue Recognition and Other Licensing Matters (Details) - claims	Sep. 30, 2017	Jun. 30, 2017
Other Licensing Matters
Number of claims outstanding	0	0

Represents the number of claims outstanding related to indemnification obligations.

No definition available.

Name:	azpn_SoftwareLicensingIndemnificationObligationsNumberOfClaimsOutstanding
Namespace Prefix:	azpn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant