Net Income per Share - Computation of Basic and Diluted Net Income per Common Share Under Treasury Stock Method (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 03, 2023	May 28, 2022	Jun. 03, 2023	May 28, 2022
Numerator:
Net income attributable to MSC Industrial as reported	$ 95,180	$ 99,657	$ 255,634	$ 235,655
Denominator:
Weighted-average shares outstanding for basic net income per share	55,963	55,914	55,911	55,748
Effect of dilutive securities (in shares)	193	192	210	271
Weighted-average shares outstanding for diluted net income per share	56,156	56,106	56,121	56,019
Net income per share:
Basic (in usd per share)	$ 1.70	$ 1.78	$ 4.57	$ 4.23
Diluted (in usd per share)	$ 1.69	$ 1.78	$ 4.56	$ 4.21
Potentially dilutive securities (in shares)	0	330	204	363