| r0.c0 | Revenue recognised on exchanging construction services for intangible asset/Current | ifrs-full:RevenueRecognisedOnExchangingConstructionServicesForIntangibleAsset | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r0.c1 | Revenue recognised on exchanging construction services for intangible asset/Previous | ifrs-full:RevenueRecognisedOnExchangingConstructionServicesForIntangibleAsset | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | $FinancialReportingPeriodPreviousStartDateParam/$FinancialReportingPeriodPreviousEndDateParam |
| r1.c0 | Revenue recognised on exchanging construction services for financial asset/Current | ifrs-full:RevenueRecognisedOnExchangingConstructionServicesForFinancialAsset | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r1.c1 | Revenue recognised on exchanging construction services for financial asset/Previous | ifrs-full:RevenueRecognisedOnExchangingConstructionServicesForFinancialAsset | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | $FinancialReportingPeriodPreviousStartDateParam/$FinancialReportingPeriodPreviousEndDateParam |
| r2.c0 | Profit (loss) recognised on exchanging construction services for intangible asset/Current | ifrs-full:ProfitLossRecognisedOnExchangingConstructionServicesForIntangibleAsset2011 | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r2.c1 | Profit (loss) recognised on exchanging construction services for intangible asset/Previous | ifrs-full:ProfitLossRecognisedOnExchangingConstructionServicesForIntangibleAsset2011 | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | $FinancialReportingPeriodPreviousStartDateParam/$FinancialReportingPeriodPreviousEndDateParam |
| r3.c0 | Profit (loss) recognised on exchanging construction services for financial asset/Current | ifrs-full:ProfitLossRecognisedOnExchangingConstructionServicesForFinancialAsset2011 | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r3.c1 | Profit (loss) recognised on exchanging construction services for financial asset/Previous | ifrs-full:ProfitLossRecognisedOnExchangingConstructionServicesForFinancialAsset2011 | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | $FinancialReportingPeriodPreviousStartDateParam/$FinancialReportingPeriodPreviousEndDateParam |