| Name | PaymentsAbstract |
|---|---|
| Namespace | http://xbrl.cipc.co.za/taxonomy/grap |
| Prefix | grap |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Payments [abstract] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Relation Type | Role | |
|---|---|---|---|
grap:Suppliers | parent-child | http://xbrl.cipc.co.za/taxonomy/role/510.000 | |
grap:DevelopmentContribution | parent-child | http://xbrl.cipc.co.za/taxonomy/role/510.000 | |
grap:SARSPaymentsVATIncomeTax | parent-child | http://xbrl.cipc.co.za/taxonomy/role/510.000 | |
ifrs-full:DistributionCosts | parent-child | http://xbrl.cipc.co.za/taxonomy/role/510.000 | |
grap:EmployeeCosts | parent-child | http://xbrl.cipc.co.za/taxonomy/role/510.000 | |
grap:TaxesPaid | parent-child | http://xbrl.cipc.co.za/taxonomy/role/510.000 | |
ifrs-full:FinanceCosts | parent-child | http://xbrl.cipc.co.za/taxonomy/role/510.000 |
| Name | Relation Type | Role | |
|---|---|---|---|
ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract | parent-child | http://xbrl.cipc.co.za/taxonomy/role/510.000 | |
cipc-ca:DimensionalQualificationForLineItemsLineItems | domain-member | http://xbrl.cipc.co.za/taxonomy/role/dimensions/999.999/DimensionalQualificationForLineItems |