Condensed Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Total	Total Shareholders’ Equity Attributable to MSC Industrial	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interest	Class A Common Stock	Class A Common Stock Common Stock	Class A Common Stock Additional Paid-in Capital	Class A Common Stock Retained Earnings	Class A Common Stock Treasury Stock	Class B Common Stock	Class B Common Stock Common Stock	Class B Common Stock Retained Earnings
Beginning Balance at Sep. 03, 2022			$ 798,408	$ 681,292	$ (23,121)	$ (106,202)	$ 11,849		$ 48					$ 9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Associate Incentive Plans			16,115						1
Associate Incentive Plans						837
Foreign Currency Translation Adjustment	$ 1,270				935
Net Loss	81,314			81,314			(102)
Repurchase and retirement of Class A Common Stock									0	$ (30)	$ (14,282)
Reclassification of Common Stock			0	0					0					0
Repurchase of Class A Common Stock												$ (4,227)
Cash dividends declared on Common Stock											(37,370)				$ (6,837)
Dividend equivalents declared, net of cancellations				(552)
Foreign Currency Translation Adjustment	(335)						335
Ending Balance at Dec. 03, 2022	1,398,420	$ 1,386,338	814,493	703,565	(22,186)	(109,592)	12,082		49					9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)								$ 790					$ 790
Beginning Balance at Sep. 02, 2023	1,492,582		849,502	755,007	(17,725)	(107,677)	13,418		48					9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Associate Incentive Plans			15,037						0
Associate Incentive Plans						794
Foreign Currency Translation Adjustment	404				448
Net Loss	69,350			69,350			(222)
Repurchase and retirement of Class A Common Stock									(1)	$ (214)	(123,314)
Reclassification of Common Stock			188,404	(188,406)					11					(9)
Repurchase of Class A Common Stock												$ (8,516)
Cash dividends declared on Common Stock											$ (47,192)				$ 0
Dividend equivalents declared, net of cancellations				(483)
Foreign Currency Translation Adjustment	44						(44)
Ending Balance at Dec. 02, 2023	$ 1,398,225	$ 1,385,073	$ 1,052,729	$ 464,962	$ (17,277)	$ (115,399)	$ 13,152		$ 58					$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)								$ 830					$ 0