Deferred Grant Income (Details Narrative) - USD ($)	3 Months Ended	12 Months Ended
Dec. 31, 2015	Sep. 30, 2015
Deferred Revenue Disclosure [Abstract]
Awarded grant funding amount		$ 286,455
Deferred grant income	$ 39,055	$ 71,614
Other grant income	$ 571,093

Information related to funding of deferred income awarded grant.

No definition available.

Name:	avxl_FundingOfDeferredIncomeAwardedGrant
Namespace Prefix:	avxl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration