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Loss Per Share - Additional information (Detail) | 12 Months Ended
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Dec. 31, 2022
FFG shares [Member] |
Earnings per share [line items] |
Ordinary shares converion basis | 0.26926188

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_EarningsPerShareLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Ordinary shares converion basis. + References No definition available. + Details
Name: | lanv_OrdinarySharesConverionBasis
Namespace Prefix: | lanv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=lanv_FfgSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |