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Use of estimates - Additional information (Detail)	12 Months Ended
	Dec. 31, 2022
Disclosure Of Use Of Estimates [Abstract]
Percentage Of Total Credit Exposure Less Than Consolidated Revenues	1.00%

X

- Definition

Disclosure of use of estimates.

+ References

No definition available.

+ Details

Name:	lanv_DisclosureOfUseOfEstimatesAbstract
Namespace Prefix:	lanv_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of total credit exposure less than consolidated revenues.

+ References

No definition available.

+ Details

Name:	lanv_PercentageOfTotalCreditExposureLessThanConsolidatedRevenues
Namespace Prefix:	lanv_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration