Basis of Presentation and Significant Accounting Policies (Policies)	6 Months Ended
	Jul. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements and related notes include the accounts of Chewy, Inc. and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated. The unaudited condensed consolidated financial statements and notes thereto of Chewy, Inc. have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim financial reporting and, therefore, omit or condense certain footnotes and other information normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) as set forth in the Financial Accounting Standards Board’s (“FASB”) accounting standards codification. In the opinion of management, all adjustments necessary for a fair statement of the financial information, which are of a normal and recurring nature, have been made for the interim periods reported. Results of operations for the quarterly period ended July 31, 2022 are not necessarily indicative of the results for the entire fiscal year. The unaudited condensed consolidated financial statements and notes thereto included in this Quarterly Report on Form 10-Q for the quarterly period ended July 31, 2022 (“10-Q Report”) should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 30, 2022 (“10-K Report”).
Fiscal Year	Fiscal Year The Company has a 52- or 53-week fiscal year ending each year on the Sunday that is closest to January 31 of that year. The Company’s 2022 fiscal year ends on January 29, 2023 and is a 52-week year. The Company’s 2021 fiscal year ended January 30, 2022 and was a 52-week year.
Use of Estimates	Use of Estimates GAAP requires management to make certain estimates, judgments, and assumptions that affect reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, management evaluates these estimates and judgments. Actual results could differ from those estimates. Key estimates relate primarily to determining the net realizable value and demand for inventory, useful lives associated with property and equipment and intangible assets, valuation allowances with respect to deferred tax assets, contingencies, self-insurance accruals, evaluation of sales tax positions, and the valuation and assumptions underlying share-based compensation. On an ongoing basis, management evaluates its estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to measure fair value: Level 1-Valuations based on quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2-Valuations based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 3-Valuations based on unobservable inputs reflecting the Company’s assumptions, consistent with reasonably available assumptions made by other market participants. These valuations require significant judgment. The Company considers all highly liquid investments with an original maturity of 90 days or less to be cash equivalents. Cash equivalents are carried at cost, which approximates fair value and are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Issued Accounting Pronouncements ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. In June 2022, the FASB issued this Accounting Standards Update (“ASU”) to clarify the guidance when measuring the fair value of an equity security subject to contractual sale restrictions that prohibit the sale of an equity security. This update is effective at the beginning of the Company’s 2024 fiscal year, with early adoption permitted. The Company does not believe the adoption of this standard will have a material impact on the Company’s condensed consolidated financial statements.