Summary of Significant Accounting Policies (Tables)	3 Months Ended
Summary of Significant Accounting Policies (Tables)	Mar. 31, 2025
Accounting Policies [Abstract]
Unusual Risks and Uncertainties	Recent Accounting Pronouncements – Please refer to Note 1, “Description of Business and Summary of Significant Accounting Policies,” to the consolidated financial statements in Sonic’s Annual Report on Form 10-K for the year ended December 31, 2024 for further discussion of recent accounting pronouncements. In November 2023, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” The amendments require the disclosure of significant segment expenses as well as expanded interim disclosures, along with other changes to segment disclosure requirements. The standard will be effective for fiscal years beginning after December 15, 2023, and interim periods beginning after December 15, 2024. We have implemented the provisions of ASU 2023-07. See Note 9, “Segment Information,” to the accompanying consolidated financial statements for the expanded disclosures required by ASC Topic 280. In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires greater disaggregation of income tax disclosures. The new standard requires additional information to be disclosed with respect to the income tax rate reconciliation and income taxes paid disaggregated by jurisdiction. The standard will be effective for fiscal years beginning after December 15, 2024, and interim periods for fiscal years beginning after December 15, 2025. We are currently evaluating the impact that the adoption of the provisions of the ASU will have on our consolidated financial statements. In November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40)”. The amendments require the disclosure of specified information about certain costs and expenses including purchases of inventory, employee compensation, depreciation, intangible asset amortization and depreciation, depletion, and amortization recognized as part of oil and gas producing activities. It also requires the disclosure of a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively as well as the total amount of selling expenses and, in annual reporting periods, an entity’s description of selling expenses. The standard will be effective for fiscal years beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. We are currently evaluating the impact that the adoption of the provisions of the ASU will have on our consolidated financial statements.

SONIC AUTOMOTIVE INC 10-Q