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Non-Underlying Items - Summary of Detailed Information About Non Underlying Items (Detail) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of Non Underlying Items [Abstract] |  |  |
Cost related to the Reverse Recapitalization | € (84,193) |  |
Net gain on disposals | 964 | € 24,014 | € 40,307
Government grants | 172 | 6,177 | 3,724
Negative goodwill from acquisition of a subsidiary | 0 | 7,896 |
Gain on debt restructuring | 0 | 7,380 |
Other | 0 | (261) | (485)
Total non-underlying items | € (83,057) | € 45,206 | € 43,546

X
- Definition The amount of any gain recognised in a business combination in which the net of the identifiable assets acquired and the liabilities assumed exceeds the aggregate of the consideration transferred, non-controlling interest in the acquiree and fair value of the acquirer's previously held equity interest in the acquiree. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2022-03-24 -Paragraph B64 -Subparagraph n -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2022-en-r&anchor=para_B64_n_i&doctype=Appendix&subtype=B -URIDate 2022-03-24 + Details
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Balance Type: | credit
Period Type: | duration

X
- Definition The gain on disposals of non-current assets. [Refer: Non-current assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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Balance Type: | credit
Period Type: | duration

X
- Definition The amount of income recognised in relation to government grants. [Refer: Government grants] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 20 -IssueDate 2022-03-24 -Paragraph 39 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=20&code=ifrs-tx-2022-en-r&anchor=para_39_b&doctype=Standard -URIDate 2022-03-24 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Expensed listing fees and the amount of expense arising from share-based payment transactions in which the goods or services received did not qualify for recognition as assets. + References No definition available. + Details
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Namespace Prefix: | lanv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Disclosure of non underlying items. + References No definition available. + Details
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- Definition Gain on debt restructuring. + References No definition available. + Details
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Balance Type: | credit
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- Definition Refers to an entry that appears on a company's financial statements that is unlikely to happen again and is considered to be infrequent or unusual. + References No definition available. + Details
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X
- Definition Other non underlying items. + References No definition available. + Details
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