v3.25.2
Additional disclosure requirements - Condensed Statements of Comprehensive Income (Details) - EUR (€)
€ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Condensed Statement of Income Captions [Line Items]    
Profit/(loss) for the period € 7,463 € 6,592
OTHER RECOGNISED INCOME AND EXPENSE (1,374) (2,393)
Items that may be reclassified to profit or loss (1,690) (2,364)
Hedging instruments (items not designated) 0 0
Revaluation gains (losses) 0 0
Amounts transferred to income statement 0 0
Other reclassifications 0 0
Debt instruments at fair value with changes in other comprehensive income 704 (325)
Revaluation gains (losses) 666 (291)
Amounts transferred to income statement 38 (34)
Other reclassifications 0 0
Cash flow hedges (effective portion) 692 (403)
Revaluation gains (losses) (266) (887)
Amounts transferred to income statement 958 484
Amounts transferred to initial carrying amount of hedged items 0 0
Other reclassifications 0 0
Hedges of net investments in foreign operations (effective portion) 756 101
Revaluation gains (losses) 756 101
Amounts transferred to income statement 0 0
Other reclassifications 0 0
Exchange differences (3,540) (1,932)
Revaluation gains (losses) (3,540) (1,932)
Amounts transferred to income statement 0 0
Other reclassifications 0 0
Non-current assets held for sale 178 0
Income tax (452) 252
Items that will not be reclassified to profit or loss 316 (29)
Actuarial gains/(losses) on pension plans 21 (59)
Other recognised income and expense of investments in subsidiaries, joint ventures and associates 1 (4)
Changes in the fair value of equity instruments measured at fair value through other comprehensive income 263 107
Gains or losses resulting from the accounting for hedges of equity instruments measured at fair value through other comprehensive income, net 0 0
Changes in the fair value of equity instruments measured at fair value through other comprehensive income (hedged item) (95) 4
Changes in the fair value of equity instruments measured at fair value through other comprehensive income (hedging instrument) 95 (4)
Changes in the fair value of financial liabilities at fair value through profit or loss attributable to changes in credit risk 60 (90)
Income tax relating to items that will not be reclassified (18) 17
Total recognised income and expenses for the year 6,089 4,199
Banco Santander S.A. | Reportable legal entities    
Condensed Statement of Income Captions [Line Items]    
Profit/(loss) for the period 5,591 5,402
OTHER RECOGNISED INCOME AND EXPENSE 224 71
Items that may be reclassified to profit or loss 38 93
Hedging instruments (items not designated) 0 0
Revaluation gains (losses) 0 0
Amounts transferred to income statement 0 0
Other reclassifications 0 0
Debt instruments at fair value with changes in other comprehensive income 70 (26)
Revaluation gains (losses) 6 (95)
Amounts transferred to income statement 64 69
Other reclassifications 0 0
Cash flow hedges (effective portion) (65) 163
Revaluation gains (losses) (62) (13)
Amounts transferred to income statement (3) 176
Amounts transferred to initial carrying amount of hedged items 0 0
Other reclassifications 0 0
Hedges of net investments in foreign operations (effective portion) 280 0
Revaluation gains (losses) 280 0
Amounts transferred to income statement 0 0
Other reclassifications 0 0
Exchange differences (291) 0
Revaluation gains (losses) (291) 0
Amounts transferred to income statement 0 0
Other reclassifications 0 0
Non-current assets held for sale 0 0
Income tax 44 (44)
Items that will not be reclassified to profit or loss 186 (22)
Actuarial gains/(losses) on pension plans 24 2
Other recognised income and expense of investments in subsidiaries, joint ventures and associates 0 0
Changes in the fair value of equity instruments measured at fair value through other comprehensive income 144 17
Gains or losses resulting from the accounting for hedges of equity instruments measured at fair value through other comprehensive income, net 0 0
Changes in the fair value of equity instruments measured at fair value through other comprehensive income (hedged item) (95) 4
Changes in the fair value of equity instruments measured at fair value through other comprehensive income (hedging instrument) 95 (4)
Changes in the fair value of financial liabilities at fair value through profit or loss attributable to changes in credit risk 40 (61)
Income tax relating to items that will not be reclassified (22) 20
Total recognised income and expenses for the year € 5,815 € 5,473