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Impairment Testing Of Intangible Assets With Indefinite Useful Lives - Summary Of The Sensitivity Of The Impairment Testing To Reasonably Possible Changes In Key Assumptions (Detail) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Goodwill [member] | WACC [member] | Lanvin [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Increase in unobservable input, assets | € 3,810 | € 4,002
Goodwill [member] | WACC [member] | Wolford [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Increase in unobservable input, assets | 5,904 | 5,356
Goodwill [member] | WACC [member] | St. John [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Increase in unobservable input, assets | 1,928 | 1,331
Goodwill [member] | Long Term Growth Rate [Member] | Lanvin [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 1,522 | 1,563
Goodwill [member] | Long Term Growth Rate [Member] | Wolford [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 2,507 | 2,888
Goodwill [member] | Long Term Growth Rate [Member] | St. John [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 782 | 642
Brand [member] | WACC [member] | Lanvin [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Increase in unobservable input, assets | 1,002 | 1,035
Brand [member] | WACC [member] | Wolford [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Increase in unobservable input, assets | 491 | 476
Brand [member] | WACC [member] | St. John [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Increase in unobservable input, assets | 330 | 245
Brand [member] | WACC [member] | Sergio Rossi [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Increase in unobservable input, assets | 23 | 31
Brand [member] | Long Term Growth Rate [Member] | Lanvin [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 310 | 330
Brand [member] | Long Term Growth Rate [Member] | Wolford [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 172 | 219
Brand [member] | Long Term Growth Rate [Member] | St. John [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 110 | 87
Brand [member] | Long Term Growth Rate [Member] | Sergio Rossi [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 6 | 10
Brand [member] | Royalty Rate [Member] | Lanvin [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 2,236 | 2,178
Brand [member] | Royalty Rate [Member] | Wolford [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 2,053 | 2,004
Brand [member] | Royalty Rate [Member] | St. John [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | 1,118 | 924
Brand [member] | Royalty Rate [Member] | Sergio Rossi [Member] |  |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |  |
Decrease in unobservable input, assets | € 334 | € 351

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