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Reverse Recapitalization - Summary of Detailed Information About Excess Fair Value of Shares Issued Over Fair Value of Identifiable Net Assets Acquired (Parenthetical) (Detail) shares in Thousands | Dec. 14, 2022 shares
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PCAC [Member] |
Disclosure of Reverse Recapitalization [Line Items] |
Number of shares issued under share based payments transactions | 10,640

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- Definition Disclosure of reverse recapitalization. + References No definition available. + Details
Name: | lanv_DisclosureOfReverseRecapitalizationLineItems
Namespace Prefix: | lanv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of shares issued under share based payments transactions. + References No definition available. + Details
Name: | lanv_NumberOfSharesIssuedUnderShareBasedPaymentsTransactions
Namespace Prefix: | lanv_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | dei_LegalEntityAxis=lanv_PcacMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |