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Share-based compensation	9 Months Ended
Share-based compensation	Nov. 02, 2019
Share-based Payment Arrangement [Abstract]
Share-based compensation	Share-based compensation Signet recorded share-based compensation expense of $4.7 million and $13.0 million for the 13 and 39 weeks ended November 2, 2019, respectively, related to the Omnibus Plan and Share Saving Plans ($7.3 million and $15.5 million for the 13 and 39 weeks ended November 3, 2018, respectively).