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

X

- 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

X

- 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

X

- Details

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