COMMITMENTS (Narrative) (Details)	Jan. 31, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Undiscounted lease payments for lease liabilities held for sale	$ 456,383

Represents the amount of undiscounted lease payments under other commitment.

No definition available.

Name:	cxxif_UndiscountedLeasePaymentsUnderOtherCommitment
Namespace Prefix:	cxxif_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant