Business Of Presentation (Policy)	3 Months Ended
Dec. 03, 2022
Business And Summary Of Significants Accounting Policies [Abstract]
Principles Of Consolidation	Principles of Consolidation The unaudited Condensed Consolidated Financial Statements include the accounts of MSC Industrial Direct Co., Inc., its wholly owned subsidiaries and entities in which it maintains a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation.
Impact Of Economic Trends	Impact of Economic Trends The United States economy has experienced and continues to experience disruptions in the supply of certain products and services and tight conditions in the labor market. These disruptions and conditions have contributed to an inflationary environment which, while falling, remains elevated and has affected the price and, at times, the availability of certain products and services necessary for the Company’s operations, including fuel, labor and certain products the Company sells or the inputs for such products. Such disruptions and conditions have impacted, and may continue to impact in the future, the Company’s business, financial condition and results of operations. As a result of recent high inflation and elevated freight, labor and fuel costs, as well as periodic supply chain disruptions, the Company has implemented price realization strategies in response to increased costs the Company faces. Furthermore, in light of disruptions to availability and increased or uncertain shipping times, the Company is maintaining higher purchasing levels than it did prior to its fiscal year 2020 in order to ensure sufficient inventory supply to meet customer demand.
Fiscal Year	Fiscal Year The Company operates on a 52/53-week fiscal year ending on the Saturday closest to August 31^st of each year. References to “fiscal year 2023” refer to the period from September 4, 2022 to September 2, 2023, which is a 52-week fiscal year. References to “fiscal year 2022” refer to the period from August 29, 2021 to September 3, 2022, which was a 53-week fiscal year. The fiscal quarters ended December 3, 2022 and November 27, 2021 refer to the thirteen weeks ended as of those dates.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In November 2021, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance, which provides for additional annual disclosures and added transparency for entities which receive government assistance. This includes disclosure of the type of government assistance received, the entity’s method of accounting, and the impact on the entity’s financial statements. This guidance is for annual periods beginning after December 15, 2021. The guidance was adopted by the Company for fiscal year 2023 and will be applied prospectively. The Company anticipates annual disclosures within the Company’s Annual Report on Form 10-K for fiscal year 2023 related to the Employee Retention Credit (the “ERC”) provision provided under the Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”). Other pronouncements issued by the FASB or other authoritative accounting standards groups with future effective dates are either not applicable or are not expected to have a material impact on the Company’s unaudited Condensed Consolidated Financial Statements

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.

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