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Share-based compensation
3 Months Ended
May 01, 2021
Share-based Payment Arrangement [Abstract]  
Share-based compensation Share-based compensationSignet recorded share-based compensation expense of $8.0 million for the 13 weeks ended May 1, 2021 related to the Omnibus Plan and Share Saving Plans ($1.4 million for the 13 weeks ended May 2, 2020).