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

X

- Definition

Change in fair value recognized through profit or loss.

+ References

No definition available.

+ Details

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X

- Definition

Disclosure of other noncurrent assets.

+ References

No definition available.

+ Details

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Namespace Prefix:	lanv_
Data Type:	xbrli:stringItemType
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