0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Condensed Consolidated Income Statements link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Condensed Consolidated Income Statements link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Condensed Consolidated Income Statements (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Condensed Consolidated Statements of Recognized Income and Expense link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Consolidated Statements of Recognized Income and Expense - Alternative Calc link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Condensed Consolidated Statements of Changes in Total Equity link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Introduction, basis of presentation of the interim condensed consolidated financial statements and other information link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Grupo Santander link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Shareholder remuneration system and earnings per share link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Remuneration and other benefits paid to Banco Santander’s directors and senior managers link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Financial assets link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Non-current assets held for sale and liabilities associated with non-current assets held for sale link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Tangible assets link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Intangible assets link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Financial liabilities link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Provisions link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Equity link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Segment information (Primary segments) link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Related parties link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Off-balance-sheet exposures link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Average headcount and number of branches link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Other disclosures link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Additional disclosure requirements link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Introduction, basis of presentation of the interim condensed consolidated financial statements and other information (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Grupo Santander (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Shareholder remuneration system and earnings per share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Remuneration and other benefits paid to Banco Santander’s directors and senior managers (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Financial assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Non-current assets held for sale and liabilities associated with non-current assets held for sale (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Intangible assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Financial liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Provisions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Segment information (Primary segments) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Related parties (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Off-balance-sheet exposures (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Average headcount and number of branches (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Other disclosures (Tables) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Additional disclosure requirements (Tables) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Introduction, basis of presentation of the interim condensed consolidated financial statements and other information - Comparative information (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Grupo Santander - Agreement for the acquisition of Webster Financial Corporation ('Webster') (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Grupo Santander - Agreement for the sale of 49% of Santander Bank Polska S.A and accelerated placement of ordinary shares (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Grupo Santander - Agreement for the acquisition of TSB Banking Group plc (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Grupo Santander - TSD Banking Group plc, Assets Acquired and Liabilities Assumed (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Shareholder remuneration system and earnings per share - Schedule of shareholder remuneration (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Shareholder remuneration system and earnings per share - Schedule of shareholder remuneration (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Shareholder remuneration system and earnings per share - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Shareholder remuneration system and earnings per share - Schedule of basic earnings per share (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Shareholder remuneration system and earnings per share - Schedule of diluted earnings per share (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Remuneration and other benefits paid to Banco Santander’s directors and senior managers - Schedule of remuneration of members of the board of directors (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Remuneration and other benefits paid to Banco Santander’s directors and senior managers - Schedule of other benefits of members of the board of directors (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Remuneration and other benefits paid to Banco Santander’s directors and senior managers - Schedule of remuneration of senior management (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Remuneration and other benefits paid to Banco Santander’s directors and senior managers - Schedule of funds and pension plans of senior management (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Financial assets - Schedule of components of financial assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Financial assets - Disclosure of gross exposure by stages of impairment (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Financial assets - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Financial assets - Disclosure of reconciliation of changes in loss allowance (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Financial assets - Disclosure of reconciliation of changes in gross carrying amount for financial instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Financial assets - Disclosure of reconciliation of financial assets classified at amortised cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Financial assets - Schedule of collaterals received for financial assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Financial assets - Schedule of financial assets measured at other than fair value (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Non-current assets held for sale and liabilities associated with non-current assets held for sale - Schedule of non-current assets classified as held for sale (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Non-current assets held for sale and liabilities associated with non-current assets held for sale - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Non-current assets held for sale and liabilities associated with non-current assets held for sale - Discontinued operations, Condensed financial statements (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Tangible assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Intangible assets - Schedule of goodwill based on cash-generating units (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Intangible assets - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Financial liabilities - Schedule of components of financial liabilities other than hedging derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Financial liabilities - Disclosure of composition of debt instruments excluding promissory notes (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Financial liabilities - Disclosure of reconciliation of debt instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Financial liabilities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Financial liabilities - Schedule of financial liabilities measured at other than fair value (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Provisions - Schedule of other provisions by type of provision (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Provisions - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Provisions - Tax-related litigation (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Provisions - Non-tax-related proceedings (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Equity - Capital (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Equity - Schedule of other comprehensive income components (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Equity - Accumulated other comprehensive income, items that will not be reclassified to profit or loss - Actuarial gains or losses on defined benefit benefit pension plans (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Equity - Schedule of changes in fair value of equity instruments that will not be reclassified (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Equity - Other comprehensive income, items that may be reclassified to profit or loss – Hedges of net investments in foreign operations and exchange differences (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Equity - Schedule of other comprehensive income, that may be reclassified to profit or loss, by type of instrument and geographical origin of the issuer (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Segment information (Primary segments) - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Segment information (Primary segments) - Disclosure of reconciliation between adjusted profit and statutory profit (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Related parties (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Off-balance-sheet exposures - Schedule of contingent commitments (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Off-balance-sheet exposures - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Average headcount and number of branches - Schedule of average number of employees (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Average headcount and number of branches - Schedule of number of branches (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Other disclosures - Summary of fair values of financial assets and liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - Other disclosures - Valuation techniques for financial assets and liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - Other disclosures - Schedule of financial instruments at fair value whose measurement was based on internal models (Levels 2 and 3) (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - Other disclosures - Schedule of effect on fair value of financial instruments classified as Level 3 of a reasonable change in the assumptions used in the valuation (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - Other disclosures - Schedule of changes in financial instruments classified as Level 3 (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - Other disclosures - Schedule of forborne loans (Details) link:presentationLink link:calculationLink link:definitionLink 9955582 - Disclosure - Other disclosures - Disclosure of home purchase loans in Spain (Details) link:presentationLink link:calculationLink link:definitionLink 9955583 - Disclosure - Other disclosures - Real estate business - Spain (Details) link:presentationLink link:calculationLink link:definitionLink 9955584 - Disclosure - Other disclosures - Disclosure of gross exposure by stages of impairment (Details) link:presentationLink link:calculationLink link:definitionLink 9955585 - Disclosure - Other disclosures - Disclosure of financing for construction and real estate business in Spain (Details) link:presentationLink link:calculationLink link:definitionLink 9955586 - Disclosure - Other disclosures - Disclosure of financing for construction and real estate business in Spain, memorandum items (Details) link:presentationLink link:calculationLink link:definitionLink 9955587 - Disclosure - Other disclosures - Disclosure of concentration of portfolio (Details) link:presentationLink link:calculationLink link:definitionLink 9955588 - Disclosure - Other disclosures - Disclosure of foreclosed real estate assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955589 - Disclosure - Other disclosures - Foreclosed real estate assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955590 - Disclosure - Other disclosures - Solvency information (Details) link:presentationLink link:calculationLink link:definitionLink 9955591 - Disclosure - Other disclosures - Disclosure of capital ratio (Details) link:presentationLink link:calculationLink link:definitionLink 9955592 - Disclosure - Other disclosures - Disclosure of leverage capital (Details) link:presentationLink link:calculationLink link:definitionLink 9955593 - Disclosure - Additional disclosure requirements - Condensed Balance Sheets (Details) link:presentationLink link:calculationLink link:definitionLink 9955594 - Disclosure - Additional disclosure requirements - Condensed Statements of Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955595 - Disclosure - Additional disclosure requirements - Condensed Statements of Comprehensive Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955596 - Disclosure - Additional disclosure requirements - Condensed Cash Flow Statements (Details) link:presentationLink link:calculationLink link:definitionLink 9955597 - Disclosure - Additional disclosure requirements - Schedule of preference shares and preferred securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955598 - Disclosure - Additional disclosure requirements - Schedule of preference shares and preferred securities by issuer (Details) link:presentationLink link:calculationLink link:definitionLink