Basis of Presentation	3 Months Ended
Basis of Presentation	May 04, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Unless the context otherwise requires, the use of the terms “Best Buy,” “we,” “us,” and “our” in these Notes to Condensed Consolidated Financial Statements refers to Best Buy Co., Inc. and its consolidated subsidiaries. In the opinion of management, the accompanying condensed consolidated financial statements contain all adjustments necessary for a fair presentation as prescribed by accounting principles generally accepted in the United States (“GAAP”). All adjustments were comprised of normal recurring adjustments, except as noted in these Notes to Condensed Consolidated Financial Statements. Historically, we have realized more of our revenue and a large portion of our earnings in the fiscal fourth quarter, which includes the majority of the holiday shopping season in the U.S., Europe, Canada and Mexico, than in any other fiscal quarter. Due to the seasonal nature of our business, interim results are not necessarily indicative of results for the entire fiscal year. The interim financial statements and the related notes in this Quarterly Report on Form 10-Q should be read in conjunction with the consolidated financial statements and related notes included in our Transition Report on Form 10-K for the fiscal year ended February 2, 2013. The first quarter of fiscal 2014 included 13 weeks and the first quarter of fiscal 2013 included 14 weeks. Beginning in the first quarter of fiscal 2013, we changed our fiscal year-end from the Saturday nearest the end of February to the Saturday nearest the end of January. As a result of this change, our fiscal year 2013 was an 11-month transition period ending on February 2, 2013. The results for the three months ended May 5, 2012 include our fiscal month ended March 3, 2012 for operations that are not reported on a lag (primarily our Domestic segment and Canadian operations), which were also included in our results for the fiscal year ended March 2, 2012, included in our fiscal 2012 Form 10-K. See Note 2, Fiscal Year-end Change, in the Notes to Consolidated Financial Statements included in our Transition Report on Form 10-K for the fiscal year ended February 2, 2013, for additional information regarding our fiscal year-end change. In order to align our fiscal reporting periods and comply with statutory filing requirements in certain foreign jurisdictions, we consolidate the financial results of our Europe, China and Mexico operations on a one-month lag. Our policy is to accelerate recording the effect of events occurring in the lag period that significantly affect our consolidated financial statements. Other than the sale of our Switzerland operations, as described in Note 2, Assets and Liabilities Held for Sale and Discontinued Operations, no such events were identified for this period. The assets and liabilities of Best Buy Europe are reported as held for sale in the Condensed Consolidated Balance Sheets as of May 4, 2013, as a result of our agreement to sell our 50% interest in Best Buy Europe to Carphone Warehouse Group plc ("CPW"). Consistent with this presentation, the Notes to Condensed Consolidated Financial Statements exclude the assets and liabilities of Best Buy Europe as of May 4, 2013. The composition of the assets and liabilities held for sale is included in Note 2, Assets and Liabilities Held for Sale and Discontinued Operations. In preparing the accompanying condensed consolidated financial statements, we evaluated the period from May 5, 2013 through the date the financial statements were issued, for material subsequent events requiring recognition or disclosure. No such events were identified for this period.

The entire disclosure for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows. Describes procedure if disclosures are provided in more than one note to the financial statements.

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