v3.25.1
Cover Page - shares
3 Months Ended
May 03, 2025
May 30, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date May 03, 2025  
Document Transition Report false  
Entity File Number 1-32349  
Entity Registrant Name SIGNET JEWELERS LIMITED  
Entity Incorporation, State or Country Code D0  
Entity Address, Address Line One Clarendon House  
Entity Address, Address Line Two 2 Church Street  
Entity Address, City or Town Hamilton  
Entity Address, Postal Zip Code HM11  
Entity Address, Country BM  
City Area Code 441  
Local Phone Number 296 5872  
Title of 12(b) Security Common Shares of $0.18 each  
Trading Symbol SIG  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   41,150,235
Amendment flag false  
Document fiscal year focus 2026  
Document fiscal period focus Q1  
Entity Central Index Key 0000832988  
Current Fiscal Year End Date --01-31