Summary of Significant Accounting Policies | Note 1 : Summary of Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements (unaudited) and notes to the consolidated financial statements (unaudited) are presented in accordance with the rules and regulations of the Securities and Exchange Commission and do not include all the disclosures normally required in annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). The consolidated financial statements (unaudited), in the opinion of management, contain all adjustments necessary to present fairly the financial position as of August 4, 2017 , and July 29, 2016 , and the results of operations, comprehensive income for the three and six months ended August 4, 2017 , and July 29, 2016 , and cash flows for the six months ended August 4, 2017 and July 29, 2016 . These interim consolidated financial statements (unaudited) should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Lowe’s Companies, Inc. (the Company) Annual Report on Form 10-K for the fiscal year ended February 3, 2017 (the Annual Report). The financial results for the interim periods may not be indicative of the financial results for the entire fiscal year. Reclassifications Certain prior period amounts have been reclassified to conform to current presentation. Accounting Pronouncements Recently Adopted Effective February 4, 2017, the Company adopted Accounting Standards Update (ASU 2016-09), Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting . Upon adoption of the ASU, all excess tax benefits or deficiencies related to share-based payments are recognized in the provision for income taxes, which will increase the volatility within our provision for income taxes, as these amounts were previously reported within equity. As a result of the adoption, we have recognized $1 million and $24 million of excess tax benefits in our provision for income taxes for the three and six months ended August 4, 2017 , respectively. The recognition of these benefits contributed $0.03 to diluted earnings per share for the six months ended August 4, 2017. Excess tax benefits were historically reflected as a financing activity in the statements of cash flows, and after adoption, are included within operating activities. Cash paid to tax authorities by the Company when directly withholding shares for tax purposes will continue to be classified as a financing activity in the statement of cash flows. Share-based payment expense will continue to reflect estimated forfeitures of share-based payment awards. The Company has adopted the applicable provisions of the ASU prospectively. Accounting Pronouncements Not Yet Adopted In January 2017, the Financial Accounting Standards Board (FASB) issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350) . The ASU eliminates Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation to the identified assets and liabilities of the reporting unit to measure goodwill impairment. Under the amendments in this update, a goodwill impairment test is performed by comparing the fair value of the reporting unit with its carrying amount. An impairment charge is recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. This ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted. The adoption of this guidance by the Company is not expected to have a material impact on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The guidance in this ASU supersedes the leasing guidance in Topic 840, Leases . Under the new guidance, lessees are required to recognize lease assets and lease liabilities on the balance sheet for those leases previously classified as operating leases. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it should recognize lease expense for such leases generally on a straight-line basis over the lease term. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permitted. The Company is currently evaluating the impact of adopting this ASU on its consolidated financial statements but expects the ASU to have a material impact on its consolidated balance sheets, as a result of the requirement to recognize right-of-use assets and lease liabilities. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . The ASU is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of 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. In August 2015, the FASB issued ASU 2015-14, which deferred the effective date of the ASU to fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2016. Companies may use either a full retrospective or a modified retrospective approach to adopt this ASU. The Company continues to evaluate the impact of adopting this standard and its subsequent related amendments and interpretations. However, based on our preliminary assessment, the Company does not expect the adoption of this standard to have a material impact on its consolidated financial statements. The Company has determined the adoption of the guidance will impact the timing of recognition of its stored value card breakage. Currently, breakage is recognized using the remote method and will be recognized using the proportional method upon adoption of the guidance. The Company is also evaluating principal versus agent conclusions as it relates to certain arrangements with third parties that could impact the presentation of revenue on a gross or net basis. The Company plans to adopt this ASU in the first quarter of fiscal 2018, and based on its initial assessment of potential impacts to its consolidated financial statements, the Company expects to use a modified retrospective approach to adoption. |