Summary of Significant Accounting Policies (Details) - EBP 003 - USD ($) |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| EBP, Accounting Policy [Line Items] | ||
| EBP, net asset value per share or unit (in dollars per share) | $ 84.1 | $ 74.69 |
| Amounts allocated to participants electing to withdraw from plan but have not yet been paid | $ 0 | $ 31,880 |
| MSC Industrial Direct Co., Inc. Class A Common Stock | ||
| EBP, Accounting Policy [Line Items] | ||
| EBP, risk and uncertainty, concentration of investment at fair value to total investments, percentage | 2.00% | 2.00% |
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- Definition Percentage of investment at fair value held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), to total investments representing concentration risk at or above applicable threshold. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Net asset value per share or per unit of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of asset allocated, but not yet paid, to participant electing to withdraw from employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) to reconcile net asset available for benefit per financial statement to Form 5500 caption. Form 5500 is form provided by Department of the Treasury, Internal Revenue Service (IRS); Department of Labor (DOL), Employee Benefit Security Administration (EBSA); and Pension Benefit Guaranty Corporation (PBGC). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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