Background	9 Months Ended
Background	Nov. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Description and Accounting Policies [Text Block]	Background Business. CarMax, Inc. (“we,” “our,” “us,” “CarMax” and “the company”), including its wholly owned subsidiaries, is the nation’s largest retailer of used vehicles. We operate in two reportable segments: CarMax Sales Operations and CarMax Auto Finance (“CAF”). Our CarMax Sales Operations segment consists of all aspects of our auto merchandising and service operations, excluding financing provided by CAF. Our CAF segment consists solely of our own finance operation that provides financing to customers buying retail vehicles from CarMax. On June 1, 2021, we completed the acquisition of Edmunds Holding Company (“Edmunds”), which does not meet the quantitative thresholds to be considered a reportable segment. See Note 17 for additional information on our reportable segments and Note 2 for additional information regarding our acquisition of Edmunds. We deliver an unrivaled customer experience by offering a broad selection of quality used vehicles and related products and services at competitive, no-haggle prices using a customer-friendly sales process. Our omni-channel platform, which gives us the largest addressable market in the used car industry, empowers our retail customers to buy a car on their terms – online, in-store or an integrated combination of both. We offer customers a range of related products and services, including the appraisal and purchase of vehicles directly from consumers; the financing of retail vehicle purchases through CAF and third-party finance providers; the sale of extended protection plan (“EPP”) products, which include extended service plans (“ESPs”) and guaranteed asset protection (“GAP”); and vehicle repair service. Vehicles purchased through the appraisal process that do not meet our retail standards are sold to licensed dealers through on-site or virtual wholesale auctions. Basis of Presentation and Use of Estimates. The accompanying interim unaudited consolidated financial statements include the accounts of CarMax and our wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. These interim unaudited consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, such interim consolidated financial statements reflect all normal recurring adjustments considered necessary to present fairly the financial position and the results of operations and cash flows for the interim periods presented. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the full fiscal year. The accounting policies followed in the presentation of our interim financial results are consistent with those included in the company’s Annual Report on Form 10-K for the fiscal year ended February 28, 2022 (the “2022 Annual Report”), with the exception of those related to recent accounting pronouncements adopted in the current fiscal year. These interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and footnotes included in our 2022 Annual Report. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. Actual results could differ from those estimates. In particular, the novel coronavirus (“COVID-19”) pandemic and the resulting adverse impacts to global economic conditions, as well as our operations, may impact future estimates including, but not limited to, our allowance for loan losses, inventory valuations, fair value measurements, downward adjustments to investments in equity securities, asset impairment charges, the effectiveness of the company’s hedging instruments, deferred tax valuation allowances, cancellation reserves, actuarial losses on our retirement benefit plans and discount rate assumptions. Certain prior year amounts have been reclassified to conform to the current year’s presentation. Amounts and percentages may not total due to rounding. Recent Accounting Pronouncements. Effective in Future Periods In September 2022, the Financial Accounting Standards Board (“FASB”) issued an accounting pronouncement (ASU 2022-04) related to disclosure requirements for buyers in supplier finance programs. The amendments in the update require that buyers disclose qualitative and quantitative information about their supplier finance programs. Interim and annual requirements include disclosure of outstanding amounts under the obligations as of the end of the reporting period, and annual requirements include a rollforward of those obligations for the annual reporting period, as well as a description of payment and other key terms of the programs. This update is effective for annual periods beginning after December 15, 2022, and interim periods within those fiscal years, except for the requirement to disclose rollforward information, which is effective for fiscal years beginning after December 15, 2023. We plan to adopt this pronouncement for our fiscal year beginning March 1, 2023, and we do not expect it to have a material effect on our consolidated financial statements.