Organization and principal accounting policies	3 Months Ended
Organization and principal accounting policies	May 02, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and principal accounting policies	Organization and principal accounting policies Signet Jewelers Limited (“Signet” or the “Company”), a holding company incorporated in Bermuda, is the world’s largest retailer of diamond jewelry. The Company operates through its 100% owned subsidiaries with sales primarily in the United States (“US”), United Kingdom (“UK”) and Canada. Signet manages its business as three reportable segments: North America, International, and Other. The “Other” reportable segment consists of subsidiaries involved in the purchasing and conversion of rough diamonds to polished stones and unallocated corporate administrative functions. See Note 4 for additional discussion of the Company’s segments. Signet’s sales are seasonal, with the fourth quarter accounting for approximately 35-40% of annual sales, with December being the highest volume month of the year. The “Holiday Season” consists of results for the months of November and December. As a result of our strategic credit outsourcing and transformation initiatives, we anticipate our operating profit will be almost entirely generated in the fourth quarter. The Company has evaluated and determined additional events or transactions subsequent to May 2, 2020 for potential recognition or disclosure through the date the condensed consolidated interim financial statements were issued. Based upon this evaluation, the Company identified and disclosed certain matters impacting the condensed consolidated interim financial statements for the quarter ended May 2, 2020, related to the extension of the Company’s sub-prime credit outsourcing agreements as described in Note 11, and the proposed settlement of previously disclosed claims related to the securities litigation as further disclosed in Note 21. Risks and Uncertainties - COVID-19 In December 2019, a novel coronavirus (“COVID-19”) was identified in Wuhan, China. In March 2020, the World Health Organization declared COVID-19 a global pandemic as a result of the further spread of the virus into all regions of the world, including those regions where the Company’s primary operations occur in North America and the UK. COVID-19 has significantly impacted consumer traffic and the Company’s retail sales, based on the perceived public health risk and government-imposed quarantines and restrictions of public gatherings and commercial activity to contain spread of the virus. Effective March 23, 2020, the Company temporarily closed all of its stores in North America, its diamond operations in New York and its support centers in the US. Additionally, effective March 24, 2020, the Company temporarily closed all of its stores in the UK. The COVID-19 pandemic has also disrupted the Company’s global supply chain, including the temporary closure of the Company’s diamond polishing operations in Botswana, and may cause additional disruptions to operations if employees of the Company become sick, are quarantined, or are otherwise limited in their ability to work at Company locations or travel for business. The Company has continued to fill e-commerce orders during the first quarter. In addition, as a result of the uncertainty surrounding the impacts of COVID-19, beginning in March 2020, there was a significant decline in all major domestic and global financial market indicators. The Company’s share price and market capitalization have significantly declined during the first quarter of Fiscal 2021 and the expected rate of recovery is unpredictable in light of the current economic conditions. The full extent and duration of the impact of COVID-19 on the Company’s operations and financial performance is currently unknown and depends on future developments that are uncertain and unpredictable, including the duration and possible resurgence of the pandemic, its impact on capital and financial markets on a macro-scale and the actions to contain the virus or mitigate its impact, among others. While the full extent of the impact of COVID-19 is currently unknown, it has had a significant impact on Signet’s results of operations and cash flows. However, management currently believes that it has adequate liquidity and business plans to continue to operate the business and mitigate the risks associated with COVID-19 for the 12 months following the date of this report. As a result of the potential risks identified related to COVID-19 on its condensed consolidated financial statements, the Company considered and performed the following assessments during the first quarter of Fiscal 2021: impairment assessments for goodwill, indefinite-lived intangible assets and store level long-lived assets (including property and equipment and operating lease right-of-use assets); assessment of rent concessions, including deferrals or other lease modifications; assessment of the effectiveness of certain foreign currency and commodity derivative financial instruments; assessment of the realizability of the Company’s deferred tax assets; and assessment of the impacts of the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) enacted on March 27, 2020. Basis of preparation The condensed consolidated financial statements of Signet are prepared, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with US generally accepted accounting principles (“US GAAP”) have been condensed or omitted from this report, as is permitted by such rules and regulations. In the opinion of management, the accompanying condensed consolidated financial statements reflect all adjustments, which are of a normal recurring nature, necessary for a fair presentation of the results for the interim periods. It is suggested that these condensed consolidated financial statements be read in conjunction with the consolidated financial statements and notes included in Signet’s Annual Report on Form 10-K for the fiscal year ended February 1, 2020 filed with the SEC on March 26, 2020. Use of estimates The preparation of these condensed consolidated financial statements, in conformity with US GAAP and SEC regulations for interim reporting, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates, and as a result of the above noted risks associated with COVID-19, it is reasonably possible that those estimates will change in the near term and the effect could be material. Estimates and assumptions are primarily made in relation to the valuation of accounts receivables, inventories, deferred revenue, derivatives, employee benefits, income taxes, contingencies, leases, asset impairments for goodwill, indefinite-lived intangible and long-lived assets, and the depreciation and amortization of long-lived assets, as well as accounting for business combinations. Fiscal year The Company’s fiscal year ends on the Saturday nearest to January 31^st. Fiscal 2021 and Fiscal 2020 refer to the 52 week periods ending January 30, 2021 and February 1, 2020, respectively. Within these condensed consolidated financial statements, the first quarter of the relevant fiscal years 2021 and 2020 refer to the 13 weeks ended May 2, 2020 and May 4, 2019, respectively. Foreign currency translation The financial position and operating results of certain foreign operations, including certain subsidiaries operating in the UK as part of the International segment and Canada as part of the North America segment, are consolidated using the local currency as the functional currency. Assets and liabilities are translated at the rates of exchange on the balance sheet date, and revenues and expenses are translated at the monthly average rates of exchange during the period. Resulting translation gains or losses are included in the accompanying condensed consolidated statements of shareholders’ equity as a component of accumulated other comprehensive income (loss) (“AOCI”). Gains or losses resulting from foreign currency transactions are included in other operating income, net within the condensed consolidated statements of operations. See Note 9 for additional information regarding the Company’s foreign currency translation.