Background and Basis of Presentation (Policies)	9 Months Ended
Background and Basis of Presentation (Policies)	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. The condensed consolidated financial statements include the results of Chegg, Inc. and its wholly-owned subsidiaries. Significant intercompany balances and transactions have been eliminated. In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, including normal recurring adjustments, necessary to present fairly our financial position as of September 30, 2024, our results of operations, results of comprehensive (loss) income and stockholders' equity for the three and nine months ended September 30, 2024 and 2023, and our cash flows for the nine months ended September 30, 2024 and 2023. Our results of operations, results of comprehensive (loss) income, stockholders' equity, and cash flows for the nine months ended September 30, 2024 are not necessarily indicative of the results to be expected for the full year. We have a single operating and reportable segment and operating unit structure. The condensed consolidated financial statements and related financial information should be read in conjunction with the audited consolidated financial statements and the related notes thereto that are included in our Annual Report on Form 10-K for the year ended December 31, 2023 (the Annual Report on Form 10-K) filed with the SEC.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities; the disclosure of contingent liabilities at the date of the financial statements; and the reported amounts of revenues and expenses during the reporting periods. We base our estimates on historical experience, knowledge of current business conditions, and various other factors we believe to be reasonable under the circumstances. These estimates are based on management’s knowledge about current events and expectations about actions we may undertake in the future. Actual results could differ from these estimates, and such differences could be material to our financial position and results of operations. There have been no material changes in our use of estimates during the nine months ended September 30, 2024 as compared to the use of estimates disclosed in Part II, Item 8 “Consolidated Financial Statements and Supplementary Data” contained in our Annual Report on Form 10-K for the year ended December 31, 2023.
Reclassification of Prior Period Presentation	Reclassification of Prior Period Presentation In order to conform with current period presentation, $3.6 million of impairment of intangible assets has been reclassified from general and administrative expense to impairment expense on our condensed consolidated statements of operations for the three and nine months ended September 30, 2023 as well as from impairment of intangible asset to impairment expense on our condensed consolidated statements of cash flows for the nine months ended September 30, 2023. These changes in presentation do not affect previously reported results.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Issued Accounting Pronouncements Not Yet Adopted In November 2024, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures. ASU 2024-03 requires disclosure of specified information about certain costs and expenses in the notes to financial statements. Early adoption is permitted, and the guidance will be applied prospectively with the option to apply retrospectively. The guidance is effective for annual periods beginning after December 15, 2026 and interim periods beginning after December 15, 2027. We did not early adopt ASU 2024-03 and we are currently in the process of evaluating the impact of this guidance. In March 2024, the FASB issued ASU 2024-02, Codification Improvements—Amendments to Remove References to the Concepts Statements. ASU 2024-02 removes various references to the FASB’s Concepts Statements from the FASB’s Accounting Standards Codification. Early adoption is permitted, and the guidance will be applied prospectively with the option to apply retrospectively. The guidance is effective for annual periods beginning after December 15, 2024. We did not early adopt ASU 2024-02 and do not believe it will have a significant impact on our financial statements, however, we are currently in the process of evaluating the impact. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures. ASU 2023-09 requires disaggregated information about our effective tax rate reconciliation as well as information on income taxes paid that meet a quantitative threshold. Early adoption is permitted, and the guidance will be applied prospectively with the option to apply retrospectively. The guidance is effective for annual periods beginning after December 15, 2024. We did not early adopt ASU 2023-09 and we are currently in the process of evaluating the impact of this guidance. In November 2023, the FASB issued ASU 2023-07, Improvements to Reportable Segment Disclosures. ASU 2023-07 enhances current interim and annual reportable segment disclosures and requires additional disclosures about significant segment expenses. Public entities with a single reportable segment are required to apply the disclosure requirements in ASU 2023-07, as well as all existing segment disclosures and reconciliation requirements in ASC 280 on an interim and annual basis. Early adoption is permitted, and we are required to adopt the changes on a retrospective basis. The guidance is effective for annual periods beginning after December 15, 2023 and interim periods beginning after December 15, 2024. We did not early adopt ASU 2023-07 and we are currently in the process of evaluating the impact of this guidance. Recently Adopted Accounting Pronouncements We did not adopt any accounting pronouncements during the nine months ended September 30, 2024 that had a material impact on our financial statements.