| r0.c0 | Disclosure of financial assets [line items]/Financial assets, category [member] | ifrs-full:DisclosureOfFinancialAssetsLineItems | xbrli:stringItemType | duration | ifrs-full:FinancialAssetsCategoryMember | xs:date('2020-12-31') |
| r0.c1 | Disclosure of financial assets [line items]/Financial assets at fair value through profit or loss, category [member] | ifrs-full:DisclosureOfFinancialAssetsLineItems | xbrli:stringItemType | duration | ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember | xs:date('2020-12-31') |
| r0.c2 | Disclosure of financial assets [line items]/Financial assets available-for-sale, category [member] | ifrs-full:DisclosureOfFinancialAssetsLineItems | xbrli:stringItemType | duration | ifrs-full:FinancialAssetsAvailableforsaleCategoryMember | xs:date('2020-12-31') |
| r0.c3 | Disclosure of financial assets [line items]/Held-to-maturity investments, category [member] | ifrs-full:DisclosureOfFinancialAssetsLineItems | xbrli:stringItemType | duration | ifrs-full:HeldtomaturityInvestmentsCategoryMember | xs:date('2020-12-31') |
| r0.c4 | Disclosure of financial assets [line items]/Loans and receivables, category [member] | ifrs-full:DisclosureOfFinancialAssetsLineItems | xbrli:stringItemType | duration | ifrs-full:LoansAndReceivablesCategoryMember | xs:date('2020-12-31') |
| r0.c5 | Disclosure of financial assets [line items]/Financial assets at amortised cost, category [member] | ifrs-full:DisclosureOfFinancialAssetsLineItems | xbrli:stringItemType | duration | ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember | xs:date('2020-12-31') |
| r0.c6 | Disclosure of financial assets [line items]/Financial assets at fair value through other comprehensive income, category [member] | ifrs-full:DisclosureOfFinancialAssetsLineItems | xbrli:stringItemType | duration | ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember | xs:date('2020-12-31') |
| r1.c0 | Financial assets/Financial assets, category [member] | ifrs-full:FinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsCategoryMember | xs:date('2020-12-31') |
| r1.c1 | Financial assets/Financial assets at fair value through profit or loss, category [member] | ifrs-full:FinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember | xs:date('2020-12-31') |
| r1.c2 | Financial assets/Financial assets available-for-sale, category [member] | ifrs-full:FinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAvailableforsaleCategoryMember | xs:date('2020-12-31') |
| r1.c3 | Financial assets/Held-to-maturity investments, category [member] | ifrs-full:FinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:HeldtomaturityInvestmentsCategoryMember | xs:date('2020-12-31') |
| r1.c4 | Financial assets/Loans and receivables, category [member] | ifrs-full:FinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:LoansAndReceivablesCategoryMember | xs:date('2020-12-31') |
| r1.c5 | Financial assets/Financial assets at amortised cost, category [member] | ifrs-full:FinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember | xs:date('2020-12-31') |
| r1.c6 | Financial assets/Financial assets at fair value through other comprehensive income, category [member] | ifrs-full:FinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember | xs:date('2020-12-31') |
| r2.c0 | Financial assets, at fair value/Financial assets, category [member] | ifrs-full:FinancialAssetsAtFairValue | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsCategoryMember | xs:date('2020-12-31') |
| r2.c1 | Financial assets, at fair value/Financial assets at fair value through profit or loss, category [member] | ifrs-full:FinancialAssetsAtFairValue | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember | xs:date('2020-12-31') |
| r2.c2 | Financial assets, at fair value/Financial assets available-for-sale, category [member] | ifrs-full:FinancialAssetsAtFairValue | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAvailableforsaleCategoryMember | xs:date('2020-12-31') |
| r2.c3 | Financial assets, at fair value/Held-to-maturity investments, category [member] | ifrs-full:FinancialAssetsAtFairValue | xbrli:monetaryItemType | instant | ifrs-full:HeldtomaturityInvestmentsCategoryMember | xs:date('2020-12-31') |
| r2.c4 | Financial assets, at fair value/Loans and receivables, category [member] | ifrs-full:FinancialAssetsAtFairValue | xbrli:monetaryItemType | instant | ifrs-full:LoansAndReceivablesCategoryMember | xs:date('2020-12-31') |
| r2.c5 | Financial assets, at fair value/Financial assets at amortised cost, category [member] | ifrs-full:FinancialAssetsAtFairValue | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember | xs:date('2020-12-31') |
| r2.c6 | Financial assets, at fair value/Financial assets at fair value through other comprehensive income, category [member] | ifrs-full:FinancialAssetsAtFairValue | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember | xs:date('2020-12-31') |
| r3.c0 | Notional amount/Financial assets, category [member] | ifrs-full:NotionalAmount | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsCategoryMember | xs:date('2020-12-31') |
| r3.c1 | Notional amount/Financial assets at fair value through profit or loss, category [member] | ifrs-full:NotionalAmount | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember | xs:date('2020-12-31') |
| r3.c2 | Notional amount/Financial assets available-for-sale, category [member] | ifrs-full:NotionalAmount | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAvailableforsaleCategoryMember | xs:date('2020-12-31') |
| r3.c3 | Notional amount/Held-to-maturity investments, category [member] | ifrs-full:NotionalAmount | xbrli:monetaryItemType | instant | ifrs-full:HeldtomaturityInvestmentsCategoryMember | xs:date('2020-12-31') |
| r3.c4 | Notional amount/Loans and receivables, category [member] | ifrs-full:NotionalAmount | xbrli:monetaryItemType | instant | ifrs-full:LoansAndReceivablesCategoryMember | xs:date('2020-12-31') |
| r3.c5 | Notional amount/Financial assets at amortised cost, category [member] | ifrs-full:NotionalAmount | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember | xs:date('2020-12-31') |
| r3.c6 | Notional amount/Financial assets at fair value through other comprehensive income, category [member] | ifrs-full:NotionalAmount | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember | xs:date('2020-12-31') |
| r4.c0 | Pérdidas por deterioro de valor, activos financieros/Financial assets, category [member] | co-sspd-ef-Grupo1:ImpairmentLossOnFinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsCategoryMember | xs:date('2020-12-31') |
| r4.c1 | Pérdidas por deterioro de valor, activos financieros/Financial assets at fair value through profit or loss, category [member] | co-sspd-ef-Grupo1:ImpairmentLossOnFinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember | xs:date('2020-12-31') |
| r4.c2 | Pérdidas por deterioro de valor, activos financieros/Financial assets available-for-sale, category [member] | co-sspd-ef-Grupo1:ImpairmentLossOnFinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAvailableforsaleCategoryMember | xs:date('2020-12-31') |
| r4.c3 | Pérdidas por deterioro de valor, activos financieros/Held-to-maturity investments, category [member] | co-sspd-ef-Grupo1:ImpairmentLossOnFinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:HeldtomaturityInvestmentsCategoryMember | xs:date('2020-12-31') |
| r4.c4 | Pérdidas por deterioro de valor, activos financieros/Loans and receivables, category [member] | co-sspd-ef-Grupo1:ImpairmentLossOnFinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:LoansAndReceivablesCategoryMember | xs:date('2020-12-31') |
| r4.c5 | Pérdidas por deterioro de valor, activos financieros/Financial assets at amortised cost, category [member] | co-sspd-ef-Grupo1:ImpairmentLossOnFinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember | xs:date('2020-12-31') |
| r4.c6 | Pérdidas por deterioro de valor, activos financieros/Financial assets at fair value through other comprehensive income, category [member] | co-sspd-ef-Grupo1:ImpairmentLossOnFinancialAssets | xbrli:monetaryItemType | instant | ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember | xs:date('2020-12-31') |