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Segment and Geographic Information - Operating Segment Data (Parenthetical) (Details) - Watch and Accessory Brands
$ in Millions
3 Months Ended
Apr. 30, 2020
USD ($)
Segment Reporting Information [Line Items]  
Charge related to the impairment of goodwill $ 133.7
Impairment charges related to intangible assets $ 22.2