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Business And Summary Of Significant Accounting Policies (Change In The Carrying Amount Of Goodwill) (Details) $ in Thousands | 12 Months Ended
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Aug. 29, 2020 USD ($) | Aug. 31, 2019 USD ($) entity | Sep. 01, 2018 USD ($)
Business Acquisition [Line Items] |  |  |  |
Goodwill, Beginning Balance |  | $ 677,266 | $ 674,998 |
Foreign currency translation adjustments |  | 313 | (604) |
Goodwill, Ending Balance |  | $ 677,579 | 677,266 | $ 674,998
MSC Mexico [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Ownership percentage |  | 75.00% |  |
All Integrated Solutions ("AIS") [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Ownership percentage |  |  |  | 100.00%
TAC Insumos Industriales [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition | [1] |  | 2,872 |
Post-closing working capital adjustment from acquisition |  |  | $ 2,286 |
Number of subsidiaries participating in acquisition | entity |  |  | 2 |
[1] | Two subsidiaries of the Company, MSC IndustrialSupply, S. de R.L. de C.V. and MSC Import Export LLC (together, “MSC Mexico”), completed the acquisition of certain assets of TAC Insumos Industriales, S. de R.L. de C.V. and certain of its affiliates (together, “TAC”) in February 2019, including post-closing working capital adjustment of $2,286. The Company holds a 75% interest in each of the MSC Mexico entities

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