New accounting pronouncements	3 Months Ended
Apr. 30, 2016
Accounting Policies [Abstract]
New accounting pronouncements	New accounting pronouncements New accounting pronouncements adopted during the period Share-based compensation In June 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-12, “Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period.” The new guidance requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. ASU No. 2014-12 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015, with early adoption permitted. Signet adopted this guidance during the first quarter of Fiscal 2017. The adoption of this guidance did not have a material impact on the Company’s financial position or results of operations. Debt issuance costs In April 2015, the FASB issued ASU No. 2015-03, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs.” The new guidance requires that debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the debt liability, similar to the presentation of debt discounts. In August 2015, the FASB issued ASU No. 2015-15, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs.” The new guidance provides clarity that the SEC would not object to the deferral and presentation of debt issuance costs related to line-of-credit arrangements as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement. ASU Nos. 2015-03 and 2015-15 are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015, with early adoption permitted. Signet adopted this guidance during the first quarter of Fiscal 2017. Accordingly, the Company adjusted the condensed consolidated balance sheets as of January 30, 2016 and May 2, 2015 by reducing total assets and debt for amounts classified as deferred debt issuance costs of $9.5 million and $10.8 million, respectively. Signet continues to present debt issuance costs relating to its revolving credit facility and asset-backed securitization facility as assets in the condensed consolidated balance sheets. See Note 16 for additional discussion of the Company's debt issuance costs. New accounting pronouncements to be adopted in future periods 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. There are many aspects of this new accounting guidance that are still being interpreted. 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. Signet continues to assess the impact, as well as the available methods of implementation, the adoption of this guidance will have on the Company’s financial position or results of operations. Inventory In July 2015, the FASB issued 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” and options that currently exist for “market value” will be eliminated. 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.” No other changes were made to the current guidance on inventory measurement. ASU 2015-11 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2016. Early adoption is permitted and is to be applied prospectively. Signet is currently assessing the impact, if any, the adoption of this guidance will have on the Company’s financial position or results of operations. 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 2016-01 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. 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 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 impact the adoption of 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 2016-04 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. Signet does not expect the adoption of this guidance to 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. ASU No. 2016-09 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2016, with early adoption permitted. Signet is currently assessing the impact the adoption of this guidance will have on the Company’s results of operations.

New accounting pronouncements

New accounting pronouncements adopted during the period

Share-based compensation

In June 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-12, “Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period.” The new guidance requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. ASU No. 2014-12 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015, with early adoption permitted. Signet adopted this guidance during the first quarter of Fiscal 2017. The adoption of this guidance did not have a material impact on the Company’s financial position or results of operations.

Debt issuance costs

In April 2015, the FASB issued ASU No. 2015-03, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs.” The new guidance requires that debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the debt liability, similar to the presentation of debt discounts. In August 2015, the FASB issued ASU No. 2015-15, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs.” The new guidance provides clarity that the SEC would not object to the deferral and presentation of debt issuance costs related to line-of-credit arrangements as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement. ASU Nos. 2015-03 and 2015-15 are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015, with early adoption permitted. Signet adopted this guidance during the first quarter of Fiscal 2017. Accordingly, the Company adjusted the condensed consolidated balance sheets as of January 30, 2016 and May 2, 2015 by reducing total assets and debt for amounts classified as deferred debt issuance costs of $9.5 million and $10.8 million, respectively. Signet continues to present debt issuance costs relating to its revolving credit facility and asset-backed securitization facility as assets in the condensed consolidated balance sheets.

See Note 16 for additional discussion of the Company's debt issuance costs.

New accounting pronouncements to be adopted in future periods

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.

There are many aspects of this new accounting guidance that are still being interpreted. 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.

Signet continues to assess the impact, as well as the available methods of implementation, the adoption of this guidance will have on the Company’s financial position or results of operations.

Inventory

In July 2015, the FASB issued 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” and options that currently exist for “market value” will be eliminated. 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.” No other changes were made to the current guidance on inventory measurement. ASU 2015-11 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2016. Early adoption is permitted and is to be applied prospectively. Signet is currently assessing the impact, if any, the adoption of this guidance will have on the Company’s financial position or results of operations.

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 2016-01 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. 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 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 impact the adoption of 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 2016-04 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. Signet does not expect the adoption of this guidance to 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. ASU No. 2016-09 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2016, with early adoption permitted. Signet is currently assessing the impact the adoption of this guidance will have on the Company’s results of operations.