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Impairment Testing Of Intangible Assets With Indefinite Useful Lives - Summary Of The Intangible Assets With Indefinite Useful Lives (Detail) € in Thousands | Dec. 31, 2022 EUR (€) | Dec. 31, 2021 EUR (€)
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Disclosure of information for cash-generating units [line items] |  |
Net carrying amount, Goodwill | € 69,323 | € 69,323
Long Term Growth Rate [Member] | Lanvin [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.0129 | 0.0097
Long Term Growth Rate [Member] | Wolford [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.0237 | 0.0176
Long Term Growth Rate [Member] | St. John [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.0248 | 0.0188
Long Term Growth Rate [Member] | Sergio Rossi [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.0143 | 0.0109
Goodwill [member] |  |
Disclosure of information for cash-generating units [line items] |  |
Net carrying amount, Goodwill | € 69,323 | € 69,323
Goodwill [member] | Lanvin [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Net carrying amount, Goodwill | 45,931 | 45,931
Goodwill [member] | Wolford [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Net carrying amount, Goodwill | 11,701 | 11,701
Goodwill [member] | St. John [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Net carrying amount, Goodwill | € 11,691 | € 11,691
Goodwill [member] | WACC [member] | Lanvin [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.1445 | 0.1370
Goodwill [member] | WACC [member] | Wolford [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.1434 | 0.1330
Goodwill [member] | WACC [member] | St. John [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.1436 | 0.1346
Brands [member] |  |
Disclosure of information for cash-generating units [line items] |  |
Net carrying amount | € 172,334 | € 172,334
Brands [member] | Lanvin [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Net carrying amount | 100,906 | 100,906
Brands [member] | Wolford [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Net carrying amount | 37,856 | 37,856
Brands [member] | St. John [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Net carrying amount | 30,271 | 30,271
Brands [member] | Sergio Rossi [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Net carrying amount | € 3,301 | € 3,301
Brands [member] | WACC [member] | Lanvin [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.1645 | 0.1570
Brands [member] | WACC [member] | Wolford [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.1634 | 0.1530
Brands [member] | WACC [member] | St. John [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.1636 | 0.1546
Brands [member] | WACC [member] | Sergio Rossi [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.2001 | 0.1567
Brands [member] | Royalty Rate [Member] | Lanvin [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.0518 | 0.0518
Brands [member] | Royalty Rate [Member] | Wolford [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.0250 | 0.0250
Brands [member] | Royalty Rate [Member] | St. John [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.0344 | 0.0344
Brands [member] | Royalty Rate [Member] | Sergio Rossi [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Significant unobservable input, assets | 0.0125 | 0.0125

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