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Business combinations - Schedule of The Net Cash Outflows Related To The Acquisition (Details) - EUR (€) € in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 01, 2024 | Jul. 01, 2023 | Apr. 28, 2023 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Net cash outflow - Investing activities |  |  |  | € 0 | € (19,307) | € (117,686)
CGU Ermenegildo Zegna Korea Co.Ltd. |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Cash consideration paid | € (8,970) |  |  |  |  |
Cash and cash equivalents acquired | 210 |  |  |  |  |
Payment of TFI acquisition-related liabilities | (967) |  |  |  |  |
Net cash outflow - Investing activities | € (9,727) |  |  |  |  |
CGU Thom Browne Korea Ltd. |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Cash consideration paid |  | € (7,991) |  |  |  |
Net cash outflow - Investing activities |  | € (7,991) |  |  |  |
Tom Ford International LLC |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Cash consideration paid |  |  | € (91,619) |  |  |
Cash and cash equivalents acquired |  |  | 109,667 |  |  |
Payment of TFI acquisition-related liabilities |  |  | (127,158) |  |  |
Net cash outflow - Investing activities |  |  | € (109,110) |  |  |
Percentage of voting interests acquired |  |  | 85.00% |  |  |

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- Definition The amount of cash and cash equivalents in subsidiaries or other businesses over which control is obtained or lost. [Refer: Total for all subsidiaries [member]; Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2025-01-01 -Paragraph 40 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_40_c&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The aggregate cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities. [Refer: Total for all subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2025-01-01 -Paragraph 39 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_39&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The percentage of voting equity interests acquired in a business combination. [Refer: Total for all business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2025-01-01 -Paragraph B64 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B -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 35 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_c&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 35 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_c&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The portion of consideration paid or received, consisting of cash and cash equivalents, in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Total for all subsidiaries [member]; Cash and cash equivalents; Consideration paid (received)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2025-01-01 -Paragraph 40 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_40_b&doctype=Standard -URIDate 2025-03-27 + Details
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