| Line | Label | Object Class | Period Type | Balance | Report ElementName |
|---|---|---|---|---|---|
| 1 | [880000] Notes - Additional information | Network | http://xbrl.ifrs.org/role/ifrs/ias_1_2019-03-27_role-880000 | ||
| 2 | Disclosure of additional information [text block] | Concept (Text Block (HTML)) | For Period | ifrs-full:DisclosureOfAdditionalInformationExplanatory | |
| 3 | Capital commitments [abstract] | Abstract | ifrs-full:CapitalCommitmentsAbstract | ||
| 4 | Contractual capital commitments | Concept (Monetary) | As Of | Credit | ifrs-full:ContractualCapitalCommitments |
| 5 | Authorised capital commitments but not contracted for | Concept (Monetary) | As Of | Credit | ifrs-full:AuthorisedCapitalCommitmentsButNotContractedFor |
| 6 | Total capital commitments | Concept (Monetary) | As Of | Credit | ifrs-full:CapitalCommitments |
| 7 | Auditor's remuneration [abstract] | Abstract | ifrs-full:AuditorsRemunerationAbstract | ||
| 8 | Auditor's remuneration for audit services | Concept (Monetary) | For Period | Debit | ifrs-full:AuditorsRemunerationForAuditServices |
| 9 | Auditor's remuneration for tax services | Concept (Monetary) | For Period | Debit | ifrs-full:AuditorsRemunerationForTaxServices |
| 10 | Auditor's remuneration for other services | Concept (Monetary) | For Period | Debit | ifrs-full:AuditorsRemunerationForOtherServices |
| 11 | Total auditor's remuneration | Concept (Monetary) | For Period | Debit | ifrs-full:AuditorsRemuneration |
| 12 | Number and average number of employees [abstract] | Abstract | ifrs-full:NumberAndAverageNumberOfEmployeesAbstract | ||
| 13 | Number of employees | Concept (Decimal) | As Of | ifrs-full:NumberOfEmployees | |
| 14 | Average number of employees | Concept (Decimal) | For Period | ifrs-full:AverageNumberOfEmployees | |
| 15 | Miscellaneous time bands [abstract] | Abstract | ifrs-full:MiscellaneousTimeBandsAbstract | ||
| 16 | On demand [member] | Member | ifrs-full:OnDemandMember | ||
| 17 | Later than one month and not later than two months [member] | Member | ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMember | ||
| 18 | Later than one month and not later than six months [member] | Member | ifrs-full:LaterThanOneMonthAndNotLaterThanSixMonthsMember | ||
| 19 | Later than two months and not later than three months [member] | Member | ifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember | ||
| 20 | Later than three months and not later than four months [member] | Member | ifrs-full:LaterThanThreeMonthsAndNotLaterThanFourMonthsMember | ||
| 21 | Later than four months [member] | Member | ifrs-full:LaterThanFourMonthsMember | ||
| 22 | Later than six months [member] | Member | ifrs-full:LaterThanSixMonthsMember | ||
| 23 | Later than one year and not later than two years [member] | Member | ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember | ||
| 24 | Later than two years and not later than three years [member] | Member | ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember | ||
| 25 | Later than three years and not later than four years [member] | Member | ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember | ||
| 26 | Later than four years and not later than five years [member] | Member | ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember | ||
| 27 | Later than two years and not later than five years [member] | Member | ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember | ||
| 28 | Later than five years and not later than ten years [member] | Member | ifrs-full:LaterThanFiveYearsAndNotLaterThanTenYearsMember | ||
| 29 | Later than three years [member] | Member | ifrs-full:LaterThanThreeYearsMember | ||
| 30 | Later than ten years [member] | Member | ifrs-full:LaterThanTenYearsMember |