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Intangible assets - Other intangible assets (Tables) | 12 Months Ended
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Dec. 31, 2025
Intangible assets other than goodwill [abstract] |
Disclosure of detailed information about intangible assets | The detail of Intangible assets - Other intangible assets in the consolidated balance sheets and of the changes therein in 2025, 2024, and 2023 is as follows:
EUR million
| Estimated useful life | 1 January 2025 | Net additions and disposals | Change in scope of consolidation | Amortization and impairment | Application of amortization and impairment | Exchange differences and other | 31 December 2025
Cost |  | 15,261 |  | 1,714 |  | (20) |  |  | (1,286) |  | (1,179) |  | 14,490 |
Brand names |  | 32 |  | — |  | — |  |  | — |  | — |  | 32 |
IT developments | 3-10 years | 13,322 |  | 1,713 |  | (7) |  |  | (1,286) |  | (1,084) |  | 12,658 |
Other |  | 1,907 |  | 1 |  | (13) |  |  | — |  | (95) |  | 1,800 |
Accumulated amortisation |  | (9,235) |  | — |  | 12 |  | (1,847) |  | 1,228 |  | 795 |  | (9,047) |
Development |  | (8,312) |  | — |  | 6 |  | (1,715) |  | 1,228 |  | 723 |  | (8,070) |
Other |  | (923) |  | — |  | 6 |  | (132) |  | — |  | 72 |  | (977) |
Impairment losses |  | (205) |  | — |  | — |  | (108) |  | 58 |  | 162 |  | (93) |
Of which addition |  |  |  |  | (108) |  |  |  |
Of which Liberation |  |  |  |  |  |  |  |
|  | 5,821 |  | 1,714 |  | (8) |  | (1,955) |  | — |  | (222) |  | 5,350 |
EUR million
| Estimated useful life | 1 January 2024 | Net additions and disposals | Change in scope of consolidation | Amortization and impairment | Application of amortization and impairment | Exchange differences and other | 31 December 2024
Cost |  | 14,773 |  | 2,104 |  | (8) |  |  | (1,169) |  | (439) |  | 15,261 |
Brand names |  | 40 |  | — |  | — |  |  | — |  | (8) |  | 32 |
IT developments | 3-10 years | 12,867 |  | 2,104 |  | (8) |  |  | (1,169) |  | (472) |  | 13,322 |
Other |  | 1,866 |  | — |  | — |  |  | — |  | 41 |  | 1,907 |
Accumulated amortisation |  | (8,851) |  | — |  | 6 |  | (1,626) |  | 1,062 |  | 174 |  | (9,235) |
Development |  | (8,078) |  | — |  | 6 |  | (1,546) |  | 1,062 |  | 244 |  | (8,312) |
Other |  | (773) |  | — |  | — |  | (80) |  | — |  | (70) |  | (923) |
Impairment losses |  | (68) |  | — |  | — |  | (227) |  | 107 |  | (17) |  | (205) |
Of which addition |  |  |  |  | (227) |  |  |  |
Of which Liberation |  |  |  |  | — |  |  |  |
|  | 5,854 |  | 2,104 |  | (2) |  | (1,853) |  | — |  | (282) |  | 5,821 |
EUR million
| Estimated useful life | 1 January 2023 | Net additions and disposals | Change in scope of consolidation | Amortization and impairment | Application of amortization and impairment | Exchange differences and other | 31 December 2023
Cost |  | 12,502 |  | 2,197 |  | 176 |  |  | (230) |  | 128 |  | 14,773 |
Brand names |  | 33 |  | — |  | 8 |  |  | (2) |  | 1 |  | 40 |
IT developments | 3-10 years | 10,721 |  | 2,197 |  | 18 |  |  | (196) |  | 127 |  | 12,867 |
Other |  | 1,748 |  | — |  | 150 |  |  | (32) |  | — |  | 1,866 |
Accumulated amortisation |  | (7,554) |  | — |  | 5 |  | (1,386) |  | 209 |  | (125) |  | (8,851) |
Development |  | (6,866) |  | — |  | — |  | (1,294) |  | 177 |  | (95) |  | (8,078) |
Other |  | (688) |  | — |  | 5 |  | (92) |  | 32 |  | (30) |  | (773) |
Impairment losses |  | (44) |  | — |  | — |  | (53) |  | 21 |  | 8 |  | (68) |
Of which addition |  |  |  |  | (53) |  |  |  |
Of which Liberation |  |  |  |  | — |  |  |  |
|  | 4,904 |  | 2,197 |  | 181 |  | (1,439) |  | — |  | 11 |  | 5,854 |

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- Definition The disclosure of detailed information about intangible assets. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2025-01-01 -Paragraph 118 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 263 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 263 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263&doctype=Standard -URIDate 2025-03-27 + Details
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- References No definition available. + Details
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