| r0.c0 | Disclosure of impairment loss and reversal of impairment loss [line items]/Assets [member] | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems | xbrli:stringItemType | duration | ifrs-full:ClassesOfAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r0.c1 | Disclosure of impairment loss and reversal of impairment loss [line items]/Property, plant and equipment [member] | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems | xbrli:stringItemType | duration | ifrs-full:PropertyPlantAndEquipmentMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r0.c2 | Disclosure of impairment loss and reversal of impairment loss [line items]/Intangible assets other than goodwill [member] | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems | xbrli:stringItemType | duration | ifrs-full:IntangibleAssetsOtherThanGoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r0.c3 | Disclosure of impairment loss and reversal of impairment loss [line items]/Goodwill [member] | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems | xbrli:stringItemType | duration | ifrs-full:GoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r0.c4 | Disclosure of impairment loss and reversal of impairment loss [line items]/Investments accounted for using equity method [member] | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems | xbrli:stringItemType | duration | ifrs-full:InvestmentsAccountedForUsingEquityMethodMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r0.c5 | Disclosure of impairment loss and reversal of impairment loss [line items]/Other impaired assets [member] | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems | xbrli:stringItemType | duration | ifrs-full:OtherImpairedAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r1.c0 | Impairment loss recognised in profit or loss/Assets [member] | ifrs-full:ImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:ClassesOfAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r1.c1 | Impairment loss recognised in profit or loss/Property, plant and equipment [member] | ifrs-full:ImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:PropertyPlantAndEquipmentMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r1.c2 | Impairment loss recognised in profit or loss/Intangible assets other than goodwill [member] | ifrs-full:ImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:IntangibleAssetsOtherThanGoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r1.c3 | Impairment loss recognised in profit or loss/Goodwill [member] | ifrs-full:ImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:GoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r1.c4 | Impairment loss recognised in profit or loss/Investments accounted for using equity method [member] | ifrs-full:ImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:InvestmentsAccountedForUsingEquityMethodMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r1.c5 | Impairment loss recognised in profit or loss/Other impaired assets [member] | ifrs-full:ImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:OtherImpairedAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r2.c0 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are included/Assets [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreIncluded | xbrli:stringItemType | duration | ifrs-full:ClassesOfAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r2.c1 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are included/Property, plant and equipment [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreIncluded | xbrli:stringItemType | duration | ifrs-full:PropertyPlantAndEquipmentMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r2.c2 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are included/Intangible assets other than goodwill [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreIncluded | xbrli:stringItemType | duration | ifrs-full:IntangibleAssetsOtherThanGoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r2.c3 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are included/Goodwill [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreIncluded | xbrli:stringItemType | duration | ifrs-full:GoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r2.c4 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are included/Investments accounted for using equity method [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreIncluded | xbrli:stringItemType | duration | ifrs-full:InvestmentsAccountedForUsingEquityMethodMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r2.c5 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are included/Other impaired assets [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreIncluded | xbrli:stringItemType | duration | ifrs-full:OtherImpairedAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r3.c0 | Reversal of impairment loss recognised in profit or loss/Assets [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:ClassesOfAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r3.c1 | Reversal of impairment loss recognised in profit or loss/Property, plant and equipment [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:PropertyPlantAndEquipmentMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r3.c2 | Reversal of impairment loss recognised in profit or loss/Intangible assets other than goodwill [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:IntangibleAssetsOtherThanGoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r3.c3 | Reversal of impairment loss recognised in profit or loss/Goodwill [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:GoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r3.c4 | Reversal of impairment loss recognised in profit or loss/Investments accounted for using equity method [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:InvestmentsAccountedForUsingEquityMethodMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r3.c5 | Reversal of impairment loss recognised in profit or loss/Other impaired assets [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:OtherImpairedAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r4.c0 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are reversed/Assets [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreReversed | xbrli:stringItemType | duration | ifrs-full:ClassesOfAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r4.c1 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are reversed/Property, plant and equipment [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreReversed | xbrli:stringItemType | duration | ifrs-full:PropertyPlantAndEquipmentMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r4.c2 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are reversed/Intangible assets other than goodwill [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreReversed | xbrli:stringItemType | duration | ifrs-full:IntangibleAssetsOtherThanGoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r4.c3 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are reversed/Goodwill [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreReversed | xbrli:stringItemType | duration | ifrs-full:GoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r4.c4 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are reversed/Investments accounted for using equity method [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreReversed | xbrli:stringItemType | duration | ifrs-full:InvestmentsAccountedForUsingEquityMethodMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r4.c5 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are reversed/Other impaired assets [member] | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreReversed | xbrli:stringItemType | duration | ifrs-full:OtherImpairedAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r5.c0 | Impairment loss recognised in other comprehensive income/Assets [member] | ifrs-full:ImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:ClassesOfAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r5.c1 | Impairment loss recognised in other comprehensive income/Property, plant and equipment [member] | ifrs-full:ImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:PropertyPlantAndEquipmentMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r5.c2 | Impairment loss recognised in other comprehensive income/Intangible assets other than goodwill [member] | ifrs-full:ImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:IntangibleAssetsOtherThanGoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r5.c3 | Impairment loss recognised in other comprehensive income/Goodwill [member] | ifrs-full:ImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:GoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r5.c4 | Impairment loss recognised in other comprehensive income/Investments accounted for using equity method [member] | ifrs-full:ImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:InvestmentsAccountedForUsingEquityMethodMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r5.c5 | Impairment loss recognised in other comprehensive income/Other impaired assets [member] | ifrs-full:ImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:OtherImpairedAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r6.c0 | Reversal of impairment loss recognised in other comprehensive income/Assets [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:ClassesOfAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r6.c1 | Reversal of impairment loss recognised in other comprehensive income/Property, plant and equipment [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:PropertyPlantAndEquipmentMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r6.c2 | Reversal of impairment loss recognised in other comprehensive income/Intangible assets other than goodwill [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:IntangibleAssetsOtherThanGoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r6.c3 | Reversal of impairment loss recognised in other comprehensive income/Goodwill [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:GoodwillMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r6.c4 | Reversal of impairment loss recognised in other comprehensive income/Investments accounted for using equity method [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:InvestmentsAccountedForUsingEquityMethodMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r6.c5 | Reversal of impairment loss recognised in other comprehensive income/Other impaired assets [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInOtherComprehensiveIncome | xbrli:monetaryItemType | duration | ifrs-full:OtherImpairedAssetsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |