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Summary of Significant Accounting Policies (Policies) | 3 Months Ended
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Mar. 31, 2023
Accounting Policies [Abstract] |
Basis of Presentation | Basis of Presentation – The accompanying unaudited condensed consolidated financial statements of Sonic Automotive, Inc. and its wholly owned subsidiaries (“Sonic,” the “Company,” “we,” “us” or “our”) for the three months ended March 31, 2023 and 2022 are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States (the “U.S.”) (“GAAP”) for interim financial information and applicable rules and regulations of the U.S. Securities and Exchange Commission. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. The accompanying unaudited condensed consolidated financial statements reflect, in the opinion of management, all material normal, recurring adjustments necessary to fairly state the financial position, results of operations and cash flows for the periods presented. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes thereto included in Sonic’s Annual Report on Form 10-K for the year ended December 31, 2022.
Principles of Consolidation | Principles of Consolidation – All of our dealership and non-dealership subsidiaries are wholly owned and consolidated in the accompanying unaudited condensed consolidated financial statements, except for one 50%-owned dealership that is accounted for under the equity method. All material intercompany balances and transactions have been eliminated in the accompanying unaudited condensed consolidated financial statements. Certain amounts and percentages may not compute due to rounding.
Per Share Data and Stockholders' Equity | Earnings Per Share – The calculation of diluted earnings per share considers the potential dilutive effect of restricted stock units, restricted stock and stock options granted under Sonic’s stock compensation plans (and any non-forfeitable dividends paid on such awards), in addition to Class A Common Stock purchase warrants.

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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details
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- Definition Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126899994&loc=d3e18823-107790 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684 + Details
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