| r0.c0 | Statement of comprehensive income [abstract]/lbl21927 | ifrs-smes:StatementOfComprehensiveIncomeAbstract | xbrli:stringItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r0.c1 | Statement of comprehensive income [abstract]/lbl21928 | ifrs-smes:StatementOfComprehensiveIncomeAbstract | xbrli:stringItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r1.c0 | Profit (loss)/lbl21927 | ifrs-smes:ProfitLoss | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r1.c1 | Profit (loss)/lbl21928 | ifrs-smes:ProfitLoss | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r2.c0 | Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]/lbl21927 | ifrs-smes:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTaxAbstract | xbrli:stringItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r2.c1 | Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]/lbl21928 | ifrs-smes:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTaxAbstract | xbrli:stringItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r3.c0 | Other comprehensive income, before tax, exchange differences on translation/lbl21927 | ifrs-smes:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r3.c1 | Other comprehensive income, before tax, exchange differences on translation/lbl21928 | ifrs-smes:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r4.c0 | Other comprehensive income, before tax, actuarial gains (losses) on defined benefit plans/lbl21927 | ifrs-smes:OtherComprehensiveIncomeBeforeTaxActuarialGainsLossesOnDefinedBenefitPlans | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r4.c1 | Other comprehensive income, before tax, actuarial gains (losses) on defined benefit plans/lbl21928 | ifrs-smes:OtherComprehensiveIncomeBeforeTaxActuarialGainsLossesOnDefinedBenefitPlans | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r5.c0 | Other comprehensive income, before tax, gains (losses) on revaluation/lbl21927 | ifrs-smes:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluation | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r5.c1 | Other comprehensive income, before tax, gains (losses) on revaluation/lbl21928 | ifrs-smes:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluation | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r6.c0 | Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract]/lbl21927 | ifrs-smes:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTaxAbstract | xbrli:stringItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r6.c1 | Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract]/lbl21928 | ifrs-smes:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTaxAbstract | xbrli:stringItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r7.c0 | Other comprehensive income, before tax, cash flow hedges/lbl21927 | ifrs-smes:OtherComprehensiveIncomeBeforeTaxCashFlowHedges | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r7.c1 | Other comprehensive income, before tax, cash flow hedges/lbl21928 | ifrs-smes:OtherComprehensiveIncomeBeforeTaxCashFlowHedges | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r8.c0 | Share of other comprehensive income of associates and joint ventures accounted for using equity method, before tax/lbl21927 | ifrs-smes:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodBeforeTax | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r8.c1 | Share of other comprehensive income of associates and joint ventures accounted for using equity method, before tax/lbl21928 | ifrs-smes:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodBeforeTax | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r9.c0 | Other comprehensive income, before tax/lbl21927 | ifrs-smes:OtherComprehensiveIncomeBeforeTax | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r9.c1 | Other comprehensive income, before tax/lbl21928 | ifrs-smes:OtherComprehensiveIncomeBeforeTax | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r10.c0 | Income tax relating to components of other comprehensive income/lbl21927 | ifrs-smes:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r10.c1 | Income tax relating to components of other comprehensive income/lbl21928 | ifrs-smes:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r11.c0 | Income tax relating to share of other comprehensive income of associates and joint ventures accounted for using equity method/lbl21927 | ifrs-smes:IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r11.c1 | Income tax relating to share of other comprehensive income of associates and joint ventures accounted for using equity method/lbl21928 | ifrs-smes:IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r12.c0 | Other comprehensive income/lbl21927 | ifrs-smes:OtherComprehensiveIncome | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r12.c1 | Other comprehensive income/lbl21928 | ifrs-smes:OtherComprehensiveIncome | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r13.c0 | Comprehensive income/lbl21927 | ifrs-smes:ComprehensiveIncome | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r13.c1 | Comprehensive income/lbl21928 | ifrs-smes:ComprehensiveIncome | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r14.c0 | Comprehensive income attributable to [abstract]/lbl21927 | ifrs-smes:ComprehensiveIncomeAttributableToAbstract | xbrli:stringItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r14.c1 | Comprehensive income attributable to [abstract]/lbl21928 | ifrs-smes:ComprehensiveIncomeAttributableToAbstract | xbrli:stringItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r15.c0 | Comprehensive income, attributable to owners of parent/lbl21927 | ifrs-smes:ComprehensiveIncomeAttributableToOwnersOfParent | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r15.c1 | Comprehensive income, attributable to owners of parent/lbl21928 | ifrs-smes:ComprehensiveIncomeAttributableToOwnersOfParent | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |
| r16.c0 | Comprehensive income, attributable to non-controlling interests/lbl21927 | ifrs-smes:ComprehensiveIncomeAttributableToNoncontrollingInterests | xbrli:monetaryItemType | duration | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r16.c1 | Comprehensive income, attributable to non-controlling interests/lbl21928 | ifrs-smes:ComprehensiveIncomeAttributableToNoncontrollingInterests | xbrli:monetaryItemType | duration | xs:date('2019-01-01')/xs:date('2019-12-31') |