Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
Mar. 31, 2015
Significant Accounting Policies
Period over which customers typically received SMS	1 year
Expense reduction to offset the lower revenue	$ 0
Concessions given on contract modification to an existing term arrangement	$ 0

Period over which customers typically received SMS with the license agreements prior to the introduction of the aspenONE licensing model ("legacy SMS offering").

No definition available.

Name:	azpn_PeriodOverWhichCustomersReceivedSMS
Namespace Prefix:	azpn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration