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Pay vs Performance Disclosure
 12 Months Ended
Aug. 30, 2025
USD ($)
Aug. 31, 2024
USD ($)
Sep. 02, 2023
USD ($)
Sep. 03, 2022
USD ($)
Aug. 28, 2021
USD ($)
Pay vs Performance Disclosure          
Pay vs Performance Disclosure, Table
Value of Initial Fixed $100 Investment Based on:
YearSummary Compensation Table Total for CEOCompensation Actually Paid to CEOAverage Summary Compensation Table Total for other NEOsAverage Compensation Actually Paid to other NEOsTotal Shareholder ReturnPeer Group Total Shareholder Return
Net Income
(in thousands)
Adjusted Operating Margin
Organic Revenue Growth (ADS)
($)(1)
($)(1)(2)(3)
($)(1)
($)(1)(2)(3)
($)(4)
($)(4)
($)
(%)(5)(6)
(%)(5)
20255,873,8374,965,0741,307,021558,977169.95239.99197,8368.4-1.3
20244,437,4811,811,3201,286,672632,399148.70200.06255,957
10.5
-5.1
20234,928,1248,189,5141,446,6561,756,748
177.22
154.70343,107
12.5
10.6
20226,453,2436,528,5501,232,010974,416
132.02
121.48
340,482
12.7
10.1
20215,170,1037,914,7631,199,3241,603,809
138.24
122.97
217,937
11.5
1.5
        
Named Executive Officers, Footnote Erik Gershwind has served as CEO for all years reported. The other named executive officers for each year reported are: Gregory Clark, Kristen Actis-Grande, Martina McIsaac, Neal Dongre and Kimberly Shacklett for 2025; Kristen Actis-Grande, Martina McIsaac, Elizabeth Bledsoe, Kimberly Shacklett and John Hill for 2024; Kristen Actis-Grande, Martina McIsaac, John Hill and Elizabeth Bledsoe for 2023; Kristen Actis-Grande, Douglas E. Jones, Elizabeth Bledsoe and Steven Baruch for 2022; and Kristen Actis-Grande, Douglas E. Jones, Steve Armstrong and Kari Heerdt for 2021.        
Peer Group Issuers, Footnote Total shareholder return (“TSR”) is calculated based on the value of an initial fixed investment of $100 on August 29, 2020, assuming reinvestment of dividends. The peer group TSR represents TSR of the Dow Jones U.S. Industrial Supplier Index, which is the peer group used by the Company for purposes of Item 201(e) of SEC Regulation S-K in the Company’s Annual Report on Form 10-K for the fiscal year ended August 30, 2025.        
PEO Total Compensation Amount $ 5,873,837 $ 4,437,481 $ 4,928,124 $ 6,453,243 $ 5,170,103
PEO Actually Paid Compensation Amount $ 4,965,074 1,811,320 8,189,514 6,528,550 7,914,763
Adjustment To PEO Compensation, Footnote The amounts shown for "compensation actually paid" have been calculated in accordance with Item 402(v) of Regulation S-K and do not reflect compensation actually realized or received by the Company’s NEOs. These amounts reflect total compensation as set forth in the Summary Compensation Table above for each year, adjusted as described in this footnote below. Equity values are calculated in accordance with FASB ASC Topic 718. Amounts in the Exclusion of Stock Awards and Option Awards column are the totals from the Stock Awards and Option Awards columns set forth in the Summary Compensation Table. The following table details the applicable adjustments that were made to determine "compensation actually paid" (all amounts are averages for the named executive officers other than the CEO):
Equity Award Adjustments
YearExecutive(s)Summary Compensation Table Total
($)		Grant date fair values of awards in the Summary Compensation Table
($)		Year-end fair value of outstanding and unvested awards granted in the current year
($)
Change in year-end fair values for unvested awards granted in prior years
($)
Change in fair values at vesting date of awards granted in prior years that vested in the current year
($)		Change in fair values of awards granted in current year that vested in the current year
 ($)
Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year of ($)
Dividends and dividend equivalents in the current year prior to vesting
 ($)		Total CAP
 ($)
2025CEO5,873,837(3,549,966)4,176,963(1,867,295)42,984——288,5514,965,074
Other NEOs1,307,021(549,919)447,028(168,342)925—(523,316)45,580558,977
        
Non-PEO NEO Average Total Compensation Amount $ 1,307,021 1,286,672 1,446,656 1,232,010 1,199,324
Non-PEO NEO Average Compensation Actually Paid Amount $ 558,977 632,399 1,756,748 974,416 1,603,809
Adjustment to Non-PEO NEO Compensation Footnote The following table details the applicable adjustments that were made to determine "compensation actually paid" (all amounts are averages for the named executive officers other than the CEO):
Equity Award Adjustments
YearExecutive(s)Summary Compensation Table Total
($)		Grant date fair values of awards in the Summary Compensation Table
($)		Year-end fair value of outstanding and unvested awards granted in the current year
($)
Change in year-end fair values for unvested awards granted in prior years
($)
Change in fair values at vesting date of awards granted in prior years that vested in the current year
($)		Change in fair values of awards granted in current year that vested in the current year
 ($)
Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year of ($)
Dividends and dividend equivalents in the current year prior to vesting
 ($)		Total CAP
 ($)
2025CEO5,873,837(3,549,966)4,176,963(1,867,295)42,984——288,5514,965,074
Other NEOs1,307,021(549,919)447,028(168,342)925—(523,316)45,580558,977
        
Compensation Actually Paid vs. Total Shareholder Return
CEO and average NEO versus TSR.jpg
        
Compensation Actually Paid vs. Net Income
CEO and average NEO versus net income.jpg
        
Compensation Actually Paid vs. Company Selected Measure
CEO and average NEO versus Op Income.jpg
        
Total Shareholder Return Vs Peer Group
TSR of MSC vs DOW and US Industrial Supplier Index.jpg
        
Tabular List, Table
Most Important Financial Performance Measures(1)
Adjusted Operating Margin
Organic Revenue Growth (ADS)
Adjusted Return on Invested Capital
        
Total Shareholder Return Amount $ 169.95 148.70 177.22 132.02 138.24
Peer Group Total Shareholder Return Amount 239.99 200.06 154.70 121.48 122.97
Net Income (Loss) $ 197,836,000 $ 255,957,000 $ 343,107,000 $ 340,482,000 $ 217,937,000
Company Selected Measure Amount 8.4 10.5 12.5 12.7 11.5
PEO Name Erik Gershwind        
Measure:: 1          
Pay vs Performance Disclosure          
Name Adjusted Operating Margin        
Non-GAAP Measure Description Adjusted Operating Margin and Organic Revenue Growth (ADS) are non-GAAP financial measures. See Appendix A to this Proxy Statement for definitions and reconciliations of non-GAAP financial measures to the most directly comparable GAAP financial measures. We are including Organic Revenue Growth (ADS) in the table because ADS is a key driver of incentive compensation and is an important driver of value creation for our shareholders.        
Measure:: 2          
Pay vs Performance Disclosure          
Compensation Actually Paid vs. Other Measure
CEO and average NEO versus Organic ADS.jpg
        
Other Performance Measure, Amount (1.3) (5.1) 10.6 10.1 1.5
Name Organic Revenue Growth (ADS)        
Non-GAAP Measure Description We determined Adjusted Operating Margin to be the most important financial performance measure used to link Company performance to “compensation actually paid” to our CEO and other NEOs in 2025. This performance measure may not have been the most important financial performance measure for years 2024, 2023 and 2022 and we may determine a different financial performance measure to be the most important financial performance measure in future years.        
Measure:: 3          
Pay vs Performance Disclosure          
Name Adjusted Return on Invested Capital        
Non-GAAP Measure Description Adjusted Operating Margin, Organic Revenue Growth (ADS) and Adjusted Return on Invested Capital are all non-GAAP financial measures. See Appendix A to this Proxy Statement for definitions and reconciliations of non-GAAP financial measures to the most directly comparable GAAP financial measures.        
PEO | Grant Date Fair Values of Awards [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ (3,549,966)        
PEO | Year-End Fair Value of Outstanding and Unvested Awards Granted in the Current Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 4,176,963        
PEO | Change in Year-End Fair Values for Unvested Awards Granted in Prior Years [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (1,867,295)        
PEO | Change in Fair Values at Vesting Date of Awards Granted in Prior Years that Vested in the Current Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 42,984        
PEO | Change in Fair Values of Awards Granted in Current Year that Vested in the Current Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 0        
PEO | Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year of [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 0        
PEO | Dividends and Dividend Equivalents in the Current Year Prior to Vesting [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 288,551        
Non-PEO NEO | Grant Date Fair Values of Awards [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (549,919)        
Non-PEO NEO | Year-End Fair Value of Outstanding and Unvested Awards Granted in the Current Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 447,028        
Non-PEO NEO | Change in Year-End Fair Values for Unvested Awards Granted in Prior Years [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (168,342)        
Non-PEO NEO | Change in Fair Values at Vesting Date of Awards Granted in Prior Years that Vested in the Current Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 925        
Non-PEO NEO | Change in Fair Values of Awards Granted in Current Year that Vested in the Current Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 0        
Non-PEO NEO | Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year of [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (523,316)        
Non-PEO NEO | Dividends and Dividend Equivalents in the Current Year Prior to Vesting [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ 45,580