| Disclosure of Financial liabilities at amortised cost [Text Block] |
Financial liabilities at amortized costBreakdown of the balance The breakdown of the balance under these headings in the condensed consolidated balance sheets is as follows: | | | | | | | | | | | | FINANCIAL LIABILITIES AT AMORTIZED COST (MILLIONS OF EUROS) | | | | | | Notes | June
2026 | December
2025 | | Deposits | | 596,535 | 556,498 | Deposits from central banks | | 19,291 | 17,226 | Demand deposits | | 1,521 | 7 | Time deposits and other | | 14,298 | 13,774 | Repurchase agreements | | 3,472 | 3,445 | | | | | Deposits from credit institutions | | 44,263 | 36,771 | Demand deposits | | 6,584 | 6,764 | Time deposits and other | | 19,671 | 16,700 | Repurchase agreements | | 18,008 | 13,307 | Customer deposits | | 532,981 | 502,501 | Demand deposits | | 370,999 | 360,682 | Time deposits and other | | 137,207 | 127,397 | Repurchase agreements | | 24,776 | 14,422 | | Debt certificates issued | | 106,155 | 81,842 | | Other financial liabilities | | 22,339 | 20,258 | | Total | 7 | 725,029 | 658,599 |
The breakdown by geographical area (based on the residence of the customer or counterparty) and the nature of the related instruments of this heading in the condensed consolidated balance sheets is as follows: | | | | | | | | | | | | | | | DEPOSITS FROM CREDIT INSTITUTIONS (MILLIONS OF EUROS) | | | | | | | Demand deposits | Time deposits and others ⁽¹⁾ | Repurchase agreements | Total | | June 2026 | | | | | Spain | 1,244 | 4,276 | 2,276 | 7,796 | Mexico | 1,047 | 263 | 538 | 1,848 | Turkey | 57 | 1,070 | 2 | 1,129 | South America | 474 | 3,052 | — | 3,526 | Rest of Europe | 1,941 | 4,382 | 14,260 | 20,583 | Rest of the world | 1,823 | 6,625 | 931 | 9,380 | | Total | 6,587 | 19,668 | 18,008 | 44,263 | | December 2025 | | | | | Spain | 1,039 | 3,439 | 197 | 4,676 | Mexico | 1,825 | 964 | — | 2,789 | Turkey | 60 | 873 | 271 | 1,204 | South America | 636 | 2,468 | 259 | 3,363 | Rest of Europe | 1,890 | 3,513 | 11,707 | 17,110 | Rest of the world | 1,315 | 5,442 | 874 | 7,630 | | Total | 6,764 | 16,700 | 13,307 | 36,771 |
(1) Subordinated deposits are included amounting to €14 million and €104 million as of June 30, 2026 and December 31, 2025, respectively. Customer depositsThe breakdown by geographical area (based on the residence of the customer or counterparty) and the nature of the related instruments of this heading in the condensed consolidated balance sheets is as follows: | | | | | | | | | | | | | | | CUSTOMER DEPOSITS (MILLIONS OF EUROS) | | | | | | | Demand deposits | Time deposits and others | Repurchase agreements | Total | | June 2026 | | | | | Spain | 196,230 | 27,811 | 15,765 | 239,805 | Mexico | 82,778 | 19,596 | 3,857 | 106,230 | Turkey | 26,735 | 30,741 | 426 | 57,902 | South America | 37,391 | 26,159 | — | 63,550 | Rest of Europe | 22,863 | 25,867 | 4,729 | 53,458 | Rest of the world | 5,003 | 7,033 | — | 12,036 | | Total | 370,999 | 137,207 | 24,776 | 532,981 | | December 2025 | | | | | Spain | 192,222 | 23,664 | 12,786 | 228,672 | Mexico | 77,167 | 17,493 | 38 | 94,699 | Turkey | 27,443 | 24,794 | 450 | 52,687 | South America | 34,150 | 22,328 | — | 56,478 | Rest of Europe | 24,758 | 29,665 | 1,148 | 55,571 | Rest of the world | 4,942 | 9,452 | — | 14,394 | | Total | 360,682 | 127,397 | 14,422 | 502,501 |
The breakdown of the balance under this heading, by type of financial instrument and by currency, is as follows: | | | | | | | | | DEBT CERTIFICATES ISSUED (MILLIONS OF EUROS) | | | | | | | June
2026 | December
2025 | | In Euros | 50,799 | 42,070 | Promissory bills and notes | 6,481 | 5,379 | Non-convertible bonds and debentures | 17,211 | 15,860 | Covered bonds | 5,642 | 3,371 | Hybrid financial instruments ⁽¹⁾ | 1,614 | 1,160 | Securitization bonds | 4,544 | 3,203 | Wholesale funding | 6,949 | 3,688 | Subordinated liabilities | 8,358 | 9,409 | Convertible perpetual certificates | 2,750 | 3,750 | | | | | | | Other non-convertible subordinated liabilities | 5,608 | 5,659 | | In foreign currencies | 55,356 | 39,773 | Promissory bills and notes | 6,290 | 2,781 | Non-convertible bonds and debentures | 18,457 | 13,302 | Covered bonds | 101 | 94 | Hybrid financial instruments ⁽¹⁾ | 10,524 | 7,914 | | | | Wholesale funding | 7,205 | 4,142 | Subordinated liabilities | 12,778 | 11,540 | Convertible perpetual certificates | 3,511 | 2,553 | | | | | | | Other non-convertible subordinated liabilities | 9,267 | 8,986 | | Total | 106,155 | 81,842 |
(1) Corresponds to structured note issuances with embedded derivatives that have been segregated according to IFRS 9. Other financial liabilitiesThe breakdown of the balance under this heading in the condensed consolidated balance sheets is as follows: | | | | | | | | | OTHER FINANCIAL LIABILITIES (MILLIONS OF EUROS) | | | | | | | June
2026 | December
2025 | Lease liabilities | 1,458 | 1,463 | Creditors for other financial liabilities | 5,294 | 4,597 | Collection accounts | 6,511 | 4,450 | Creditors for other payment obligations | 9,076 | 9,748 | | Total | 22,339 | 20,258 |
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