COMMITMENTS (Details) - USD ($)	Mar. 31, 2021	Mar. 04, 2021	Dec. 31, 2020
Underwriting Agreement [Abstract]
Deferred underwriting fees per unit (in dollars per share)		$ 0.35
Deferred underwriting fees	$ 10,062,500	$ 10,062,500	$ 0

Carrying value as of the balance sheet date of outstanding underwriting commissions payable initially due after one year or beyond the operating cycle if longer, excluding current portion.

No definition available.

Name:	arrw_DeferredUnderwritingCommissions
Namespace Prefix:	arrw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant