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Other Non-current Assets - Additional Information (Detail) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Disclosure Of Other Noncurrent Assets [Abstract] |  |
Change in fair value recognized through profit or loss | € 250 | € 64

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- Definition Change in fair value recognized through profit or loss. + References No definition available. + Details
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Namespace Prefix: | lanv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Disclosure of other noncurrent assets. + References No definition available. + Details
Name: | lanv_DisclosureOfOtherNoncurrentAssetsAbstract
Namespace Prefix: | lanv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration