New accounting pronouncements	9 Months Ended
Oct. 28, 2017
Accounting Policies [Abstract]
New accounting pronouncements	New accounting pronouncements New accounting pronouncements adopted during the period Inventory In July 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2015-11, “Inventory (Topic 330): Simplifying the Measurement of Inventory.” The new guidance states that inventory will be measured at the lower of cost and net realizable value. The ASU defines net realizable value as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The adoption of this guidance in the first quarter of Fiscal 2018 did not have a material impact on the Company’s financial position or results of operations. Share-based compensation In March 2016, the FASB issued ASU No. 2016-09, “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” The new guidance simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The Company adopted all aspects of this guidance prospectively in the first quarter of Fiscal 2018 with a policy election to continue to estimate expected forfeitures in determining the amount of share-based compensation expense to be recognized. The adoption of this guidance did not have a material impact on the Company’s financial position or results of operations. See Note 10 for additional information regarding the impact on the Company’s results of operations in the first quarter of Fiscal 2018. New accounting pronouncements to be adopted in future periods Derivatives and Hedging In August 2017, the FASB issued ASU No. 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities.” The new guidance expands the types of risk management strategies eligible for hedge accounting, refines the documentation and effectiveness assessment requirements and modifies the presentation and disclosure requirements for hedge accounting activities. ASU No. 2017-12 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, with early adoption permitted. Signet is currently assessing the timing of adoption and the impact this guidance will have on the Company’s financial position or results of operations. Credit Losses In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The new guidance requires entities to measure and recognize expected credit losses for financial assets measured at amortized cost basis. The estimate of expected credit losses should consider historical information, current information, and reasonable and supportable forecasts of expected losses over the remaining contractual life that affect collectibility. ASU No. 2016-13 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019, with early adoption permitted. Signet currently expects to adopt this guidance when effective, and continues to assess the impact the adoption of this guidance will have on the Company’s financial position or results of operations. Revenue recognition In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” The new guidance affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets, unless those contracts are within the scope of other standards (for example, insurance contracts or lease contracts). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU No. 2014-09 provides alternative methods of retrospective adoption. In August 2015, the FASB issued an update (ASU No. 2015-14) that defers the effective date by one year. As a result, ASU No. 2014-09 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted for annual periods beginning after December 15, 2016, including interim periods within that annual period. The FASB has recently issued updates to certain aspects of the guidance to address implementation issues. In March 2016, the FASB issued additional guidance concerning “Principal versus Agent” considerations (reporting revenue gross versus net); in April 2016, the FASB issued additional guidance on identifying performance obligations and licensing; and in May 2016, the FASB issued additional guidance on collectibility, noncash consideration, presentation of sales tax, and transition. These updates are intended to improve the operability and understandability of the implementation guidance and have the same effective date and transition requirements as ASU No. 2014-09 guidance discussed above. Management continues to evaluate the impact this ASU, the related amendments and the interpretive guidance will have on the Company's consolidated financial statements. Signet is in the process of evaluating contracts with customers under the new guidance and cannot currently estimate the financial statement impact of adoption. The Company expects to progress through its assessment during Fiscal 2018 and will adopt this guidance in the first quarter of our fiscal year ending February 2, 2019. The Company is evaluating the impact of the standard through a cross-functional approach to analyze the impacts of the guidance across all of its revenue streams. This includes the review of current accounting policies and practices to identify potential differences that would result from applying the guidance. The majority of the Company’s revenue is generated from sales of finished products, which will continue to be recognized when control is transferred to the customer. The Company intends to adopt the standard using the modified retrospective method. Financial instruments In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” The new guidance primarily impacts accounting for equity investments and financial liabilities under the fair value option, as well as, the presentation and disclosure requirements for financial instruments. Under the new guidance, equity investments will generally be measured at fair value, with subsequent changes in fair value recognized in net income. ASU No. 2016-01 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Signet plans to adopt this guidance in the first quarter of our fiscal year ending February 2, 2019. Signet does not expect the adoption of this guidance to have a material impact on the Company’s financial position or results of operations. Leases In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” The new guidance primarily impacts lessee accounting by requiring the recognition of a right-of-use asset and a corresponding lease liability on the balance sheet for long-term lease agreements. The lease liability will be equal to the present value of all reasonably certain lease payments. The right-of-use asset will be based on the liability, subject to adjustment for initial direct costs. Lease agreements that are 12 months or less are permitted to be excluded from the balance sheet. In general, leases will be amortized on a straight-line basis with the exception of finance lease agreements. ASU No. 2016-02 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, with early adoption permitted. Signet is currently assessing the timing of adoption which is effective for the first quarter of our fiscal year ending February 1, 2020 and the impact that adopting this guidance will have on the Company’s financial position or results of operations. Liabilities In March 2016, the FASB issued ASU No. 2016-04, “Liabilities - Extinguishments of Liabilities (Subtopic 405-20).” The new guidance addresses diversity in practice related to the derecognition of a prepaid stored-value product liability. Liabilities related to the sale of prepaid stored-value products within the scope of this update are financial liabilities. ASU No. 2016-04 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. Signet plans to adopt this guidance in the first quarter of our fiscal year ending February 2, 2019. Signet does not expect the adoption of this guidance to have a material impact on the Company’s financial position or results of operations. Intangibles In January 2017, the FASB issued ASU No. 2017-04, “Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment.” The new guidance requires a single-step quantitative test to identify and measure goodwill impairment based on the excess of a reporting unit's carrying amount over its fair value. A qualitative assessment may still be completed first for an entity to determine if a quantitative impairment test is necessary. ASU No. 2017-04 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019, with early adoption permitted. Signet is currently assessing the timing of adoption and the impact this guidance will have on the Company’s financial position or results of operations. Retirement Benefits In March 2017, the FASB issued ASU No. 2017-07, “Compensation - Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” The new guidance requires entities to present the service cost component of the net periodic pension cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Entities will present the other components of net benefit cost separately from the service cost component and outside of operating profit within the income statement. In addition, only the service cost component will be eligible for capitalization in assets. ASU No. 2017-07 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. Signet is currently assessing the timing of adoption and the impact this guidance will have on the Company’s financial position or results of operations.

New accounting pronouncements

New accounting pronouncements adopted during the period

Inventory

In July 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2015-11, “Inventory (Topic 330): Simplifying the Measurement of Inventory.” The new guidance states that inventory will be measured at the lower of cost and net realizable value. The ASU defines net realizable value as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The adoption of this guidance in the first quarter of Fiscal 2018 did not have a material impact on the Company’s financial position or results of operations.

Share-based compensation

In March 2016, the FASB issued ASU No. 2016-09, “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” The new guidance simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The Company adopted all aspects of this guidance prospectively in the first quarter of Fiscal 2018 with a policy election to continue to estimate expected forfeitures in determining the amount of share-based compensation expense to be recognized. The adoption of this guidance did not have a material impact on the Company’s financial position or results of operations. See Note 10 for additional information regarding the impact on the Company’s results of operations in the first quarter of Fiscal 2018.

New accounting pronouncements to be adopted in future periods

Derivatives and Hedging

In August 2017, the FASB issued ASU No. 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities.” The new guidance expands the types of risk management strategies eligible for hedge accounting, refines the documentation and effectiveness assessment requirements and modifies the presentation and disclosure requirements for hedge accounting activities. ASU No. 2017-12 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, with early adoption permitted. Signet is currently assessing the timing of adoption and the impact this guidance will have on the Company’s financial position or results of operations.

Credit Losses

In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The new guidance requires entities to measure and recognize expected credit losses for financial assets measured at amortized cost basis. The estimate of expected credit losses should consider historical information, current information, and reasonable and supportable forecasts of expected losses over the remaining contractual life that affect collectibility. ASU No. 2016-13 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019, with early adoption permitted. Signet currently expects to adopt this guidance when effective, and continues to assess the impact the adoption of this guidance will have on the Company’s financial position or results of operations.

Revenue recognition

In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” The new guidance affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets, unless those contracts are within the scope of other standards (for example, insurance contracts or lease contracts). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU No. 2014-09 provides alternative methods of retrospective adoption. In August 2015, the FASB issued an update (ASU No. 2015-14) that defers the effective date by one year. As a result, ASU No. 2014-09 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted for annual periods beginning after December 15, 2016, including interim periods within that annual period.

The FASB has recently issued updates to certain aspects of the guidance to address implementation issues. In March 2016, the FASB issued additional guidance concerning “Principal versus Agent” considerations (reporting revenue gross versus net); in April 2016, the FASB issued additional guidance on identifying performance obligations and licensing; and in May 2016, the FASB issued additional guidance on collectibility, noncash consideration, presentation of sales tax, and transition. These updates are intended to improve the operability and understandability of the implementation guidance and have the same effective date and transition requirements as ASU No. 2014-09 guidance discussed above. Management continues to evaluate the impact this ASU, the related amendments and the interpretive guidance will have on the Company's consolidated financial statements.

Signet is in the process of evaluating contracts with customers under the new guidance and cannot currently estimate the financial statement impact of adoption. The Company expects to progress through its assessment during Fiscal 2018 and will adopt this guidance in the first quarter of our fiscal year ending February 2, 2019. The Company is evaluating the impact of the standard through a cross-functional approach to analyze the impacts of the guidance across all of its revenue streams. This includes the review of current accounting policies and practices to identify potential differences that would result from applying the guidance. The majority of the Company’s revenue is generated from sales of finished products, which will continue to be recognized when control is transferred to the customer. The Company intends to adopt the standard using the modified retrospective method.

Financial instruments

In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” The new guidance primarily impacts accounting for equity investments and financial liabilities under the fair value option, as well as, the presentation and disclosure requirements for financial instruments. Under the new guidance, equity investments will generally be measured at fair value, with subsequent changes in fair value recognized in net income. ASU No. 2016-01 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Signet plans to adopt this guidance in the first quarter of our fiscal year ending February 2, 2019. Signet does not expect the adoption of this guidance to have a material impact on the Company’s financial position or results of operations.

Leases

In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” The new guidance primarily impacts lessee accounting by requiring the recognition of a right-of-use asset and a corresponding lease liability on the balance sheet for long-term lease agreements. The lease liability will be equal to the present value of all reasonably certain lease payments. The right-of-use asset will be based on the liability, subject to adjustment for initial direct costs. Lease agreements that are 12 months or less are permitted to be excluded from the balance sheet. In general, leases will be amortized on a straight-line basis with the exception of finance lease agreements. ASU No. 2016-02 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, with early adoption permitted. Signet is currently assessing the timing of adoption which is effective for the first quarter of our fiscal year ending February 1, 2020 and the impact that adopting this guidance will have on the Company’s financial position or results of operations.

Liabilities

In March 2016, the FASB issued ASU No. 2016-04, “Liabilities - Extinguishments of Liabilities (Subtopic 405-20).” The new guidance addresses diversity in practice related to the derecognition of a prepaid stored-value product liability. Liabilities related to the sale of prepaid stored-value products within the scope of this update are financial liabilities. ASU No. 2016-04 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. Signet plans to adopt this guidance in the first quarter of our fiscal year ending February 2, 2019. Signet does not expect the adoption of this guidance to have a material impact on the Company’s financial position or results of operations.

Intangibles

In January 2017, the FASB issued ASU No. 2017-04, “Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment.” The new guidance requires a single-step quantitative test to identify and measure goodwill impairment based on the excess of a reporting unit's carrying amount over its fair value. A qualitative assessment may still be completed first for an entity to determine if a quantitative impairment test is necessary. ASU No. 2017-04 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019, with early adoption permitted. Signet is currently assessing the timing of adoption and the impact this guidance will have on the Company’s financial position or results of operations.

Retirement Benefits

In March 2017, the FASB issued ASU No. 2017-07, “Compensation - Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” The new guidance requires entities to present the service cost component of the net periodic pension cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Entities will present the other components of net benefit cost separately from the service cost component and outside of operating profit within the income statement. In addition, only the service cost component will be eligible for capitalization in assets. ASU No. 2017-07 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. Signet is currently assessing the timing of adoption and the impact this guidance will have on the Company’s financial position or results of operations.