OTHER INVESTMENTS (Details Textual)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 ZAR (R)	Dec. 31, 2020 USD ($)
Disclosure of defined benefit plans [line items]
Surplus (deficit) in plan	$ 0		$ 3,150,000
Grindrod Pension Fund [member] \| Grindrod Shipping South Africa [Member]
Disclosure of defined benefit plans [line items]
Percentage of participation	40.00%	40.00%
Surplus (deficit) in plan	$ 3,150,000	R 46,054,000

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfDefinedBenefitPlansLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The description of an indication of the level of participation of the entity in a defined benefit plan compared with other participating entities. Examples of measures that might provide such an indication include the entity's proportion of the total contributions to the plan or the entity's proportion of the total number of active members, retired members, and former members entitled to benefits, if that information is available. [Refer: Defined benefit plans [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2021-01-01
-Paragraph 148
-Subparagraph d
-Clause v
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_148_d_v&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_LevelOfParticipationOfEntityComparedWithOtherParticipatingEntities
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The fair value of any plan assets, less the present value of the defined benefit obligation. [Refer: Plan assets [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2021-01-01
-Paragraph 57
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_57_a&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_SurplusDeficitInPlan
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_DefinedBenefitPlansAxis=grin_GrindrodPensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=grin_GrindrodShippingSouthAfricaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: