Balance Sheet Detail - Additional Information (Detail) $ in Thousands	Apr. 30, 2021 USD ($)
Supplemental Balance Sheet Disclosures [Abstract]
Proceeds from collaboration agreement recorded as deposit liability	$ 50,000

Proceeds from collaboration agreement recognised as deposit liability.

No definition available.

Name:	aur_ProceedsFromCollaborationAgreementRecognisedAsDepositLiability
Namespace Prefix:	aur_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration