Basis of presentation	6 Months Ended
Aug. 03, 2018
Basis of presentation
Basis of presentation	1.Basis of presentation The accompanying unaudited condensed consolidated financial statements of Dollar General Corporation and its subsidiaries (the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and are presented in accordance with the requirements of Form 10-Q and Rule 10-01 of Regulation S-X. Such financial statements consequently do not include all of the disclosures normally required by U.S. GAAP for annual financial statements or those normally made in the Company’s Annual Report on Form 10-K, including the condensed consolidated balance sheet as of February 2, 2018 which was derived from the audited consolidated financial statements at that date. Accordingly, readers of this Quarterly Report on Form 10-Q should refer to the Company’s Annual Report on Form 10-K for the fiscal year ended February 2, 2018 for additional information. The Company’s fiscal year ends on the Friday closest to January 31. Unless the context requires otherwise, references to years contained herein pertain to the Company’s fiscal year. The Company’s 2018 fiscal year is scheduled to be a 52-week accounting period ending on February 1, 2019, and the 2017 fiscal year was a 52-week accounting period that ended on February 2, 2018. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the Company’s customary accounting practices. In management’s opinion, all adjustments (which are of a normal recurring nature) necessary for a fair presentation of the consolidated financial position as of August 3, 2018 and results of operations for the 13-week and 26-week accounting periods ended August 3, 2018 and August 4, 2017 have been made. The preparation of financial statements and related disclosures in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. Because the Company’s business is moderately seasonal, the results for interim periods are not necessarily indicative of the results to be expected for the entire year. The Company uses the last-in, first-out (“LIFO”) method of valuing inventory. An actual valuation of inventory under the LIFO method is made at the end of each year based on the inventory levels and costs at that time. Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels, sales for the year and the expected rate of inflation or deflation for the year. The interim LIFO calculations are subject to adjustment in the final year-end LIFO inventory valuation. The Company recorded a LIFO provision (benefit) of $3.4 million and $(0.5) million in the respective 13-week periods, and $5.5 million and $0.3 million in the respective 26-week periods, ended August 3, 2018 and August 4, 2017. In addition, ongoing estimates of inventory shrinkage and initial markups and markdowns are included in the interim cost of goods sold calculation. In May 2014, the Financial Accounting Standards Board (“FASB”) issued comprehensive new accounting standards related to the recognition of revenue and in August 2015, the FASB deferred the effective date to annual reporting periods beginning after December 15, 2017. The Company adopted this guidance using the modified retrospective approach effective February 3, 2018, and such adoption had no effect on the Company’s consolidated results of operations, financial position or cash flows. In February 2016, the FASB issued new guidance related to lease accounting, which when effective will require a dual approach for lessee accounting under which a lessee will account for leases as finance leases or operating leases. Both finance leases and operating leases will result in the lessee recognizing a right-of-use asset and a corresponding lease liability on its balance sheet, with differing methodology for income statement recognition. This guidance is effective for public business entities for fiscal years, and interim periods within those years, beginning after December 15, 2018, and early adoption is permitted. As originally issued, this guidance required a modified retrospective approach for all leases existing or entered into after the beginning of the earliest comparative period in the consolidated financial statements. In July 2018, the FASB issued additional guidance which allows companies to record the cumulative effect of applying the new standard as an adjustment to the opening balance of retained earnings in the year of adoption as an alternative to the modified retrospective approach. The Company formed a project team to assess and implement the standard, which has completed its internal evaluation of existing contractual arrangements for embedded leases. The project team is also testing computations in the Company’s lease administration system, integrating interfaces between the lease administration system and the enterprise resource planning systems, identifying and implementing new processes and controls to ensure compliance, and is in the process of evaluating and documenting the Company’s accounting conclusions related to the new standard. As a result of the efforts of this project team, the Company has identified its store leases as the area in which it would most likely be affected by the new guidance. The Company’s assessment of the impact that adoption of this guidance will have on its consolidated financial statements is ongoing, and the Company anticipates a material impact because it is party to a significant number of lease contracts for its stores. In October 2016, the FASB issued amendments to existing guidance related to accounting for intra-entity transfers of assets other than inventory, which affects the Company’s historical accounting for intra-entity transfers of certain intangible assets. This guidance is effective for public business entities for fiscal years, and interim periods within those years, beginning after December 15, 2017. The amendments are applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company adopted this guidance effective February 3, 2018 which resulted in an increase in deferred income tax liabilities and a decrease in retained earnings of $41.3 million. In January 2017, the FASB issued amendments to existing guidance related to the subsequent measurement of goodwill. These amendments modify the concept of impairment from the condition that exists when the carrying amount of goodwill exceeds its implied fair value to the condition that exists when the carrying amount of a reporting unit exceeds its fair value. Subsequent to adoption, an entity will perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. This guidance is effective for public business entities for fiscal years, and interim periods within those years, beginning after December 15, 2019, and early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The amendments should be applied on a prospective basis. An entity is required to disclose the nature of and reason for the change in accounting principle upon transition. The Company currently does not anticipate a material effect on its consolidated results of operations, financial position or cash flows to result from the adoption of this guidance.

1.Basis of presentation

The accompanying unaudited condensed consolidated financial statements of Dollar General Corporation and its subsidiaries (the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and are presented in accordance with the requirements of Form 10-Q and Rule 10-01 of Regulation S-X. Such financial statements consequently do not include all of the disclosures normally required by U.S. GAAP for annual financial statements or those normally made in the Company’s Annual Report on Form 10-K, including the condensed consolidated balance sheet as of February 2, 2018 which was derived from the audited consolidated financial statements at that date. Accordingly, readers of this Quarterly Report on Form 10-Q should refer to the Company’s Annual Report on Form 10-K for the fiscal year ended February 2, 2018 for additional information.

The Company’s fiscal year ends on the Friday closest to January 31. Unless the context requires otherwise, references to years contained herein pertain to the Company’s fiscal year. The Company’s 2018 fiscal year is scheduled to be a 52-week accounting period ending on February 1, 2019, and the 2017 fiscal year was a 52-week accounting period that ended on February 2, 2018.

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the Company’s customary accounting practices. In management’s opinion, all adjustments (which are of a normal recurring nature) necessary for a fair presentation of the consolidated financial position as of August 3, 2018 and results of operations for the 13-week and 26-week accounting periods ended August 3, 2018 and August 4, 2017 have been made.

The preparation of financial statements and related disclosures in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. Because the Company’s business is moderately seasonal, the results for interim periods are not necessarily indicative of the results to be expected for the entire year.

The Company uses the last-in, first-out (“LIFO”) method of valuing inventory. An actual valuation of inventory under the LIFO method is made at the end of each year based on the inventory levels and costs at that time. Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels, sales for the year and the expected rate of inflation or deflation for the year. The interim LIFO calculations are subject to adjustment in the final year-end LIFO inventory valuation. The Company recorded a LIFO provision (benefit) of $3.4 million and $(0.5) million in the respective 13-week periods, and $5.5 million and $0.3 million in the respective 26-week periods, ended August 3, 2018 and August 4, 2017. In addition, ongoing estimates of inventory shrinkage and initial markups and markdowns are included in the interim cost of goods sold calculation.

In May 2014, the Financial Accounting Standards Board (“FASB”) issued comprehensive new accounting standards related to the recognition of revenue and in August 2015, the FASB deferred the effective date to annual reporting periods beginning after December 15, 2017. The Company adopted this guidance using the modified retrospective approach effective February 3, 2018, and such adoption had no effect on the Company’s consolidated results of operations, financial position or cash flows.

In February 2016, the FASB issued new guidance related to lease accounting, which when effective will require a dual approach for lessee accounting under which a lessee will account for leases as finance leases or operating leases. Both finance leases and operating leases will result in the lessee recognizing a right-of-use asset and a corresponding lease liability on its balance sheet, with differing methodology for income statement recognition. This guidance is effective for public business entities for fiscal years, and interim periods within those years, beginning after December 15, 2018, and early adoption is permitted. As originally issued, this guidance required a modified retrospective approach for all leases existing or entered into after the beginning of the earliest comparative period in the consolidated financial statements. In July 2018, the FASB issued additional guidance which allows companies to record the cumulative effect of applying the new standard as an adjustment to the opening balance of retained earnings in the year of adoption as an alternative to the modified retrospective approach. The Company formed a project team to assess and implement the standard, which has completed its internal evaluation of existing contractual arrangements for embedded leases. The project team is also testing computations in the Company’s lease administration system, integrating interfaces between the lease administration system and the enterprise resource planning systems, identifying and implementing new processes and controls to ensure compliance, and is in the process of evaluating and documenting the Company’s accounting conclusions related to the new standard. As a result of the efforts of this project team, the Company has identified its store leases as the area in which it would most likely be affected by the new guidance. The Company’s assessment of the impact that adoption of this guidance will have on its consolidated financial statements is ongoing, and the Company anticipates a material impact because it is party to a significant number of lease contracts for its stores.

In October 2016, the FASB issued amendments to existing guidance related to accounting for intra-entity transfers of assets other than inventory, which affects the Company’s historical accounting for intra-entity transfers of certain intangible assets. This guidance is effective for public business entities for fiscal years, and interim periods within those years, beginning after December 15, 2017. The amendments are applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company adopted this guidance effective February 3, 2018 which resulted in an increase in deferred income tax liabilities and a decrease in retained earnings of $41.3 million.

In January 2017, the FASB issued amendments to existing guidance related to the subsequent measurement of goodwill. These amendments modify the concept of impairment from the condition that exists when the carrying amount of goodwill exceeds its implied fair value to the condition that exists when the carrying amount of a reporting unit exceeds its fair value. Subsequent to adoption, an entity will perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. This guidance is effective for public business entities for fiscal years, and interim periods within those years, beginning after December 15, 2019, and early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The amendments should be applied on a prospective basis. An entity is required to disclose the nature of and reason for the change in accounting principle upon transition. The Company currently does not anticipate a material effect on its consolidated results of operations, financial position or cash flows to result from the adoption of this guidance.