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 Common Stock
Beginning Balance at Sep. 02, 2023			$ 849,502	$ 755,007	$ (17,725)	$ (107,677)	$ 13,418		$ 48				$ 9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Associate Incentive Plans			15,037
Foreign Currency Translation Adjustment	$ 404				448
Associate Incentive Plans						794
Net Income (Loss)	69,350			69,350			(222)
Repurchase and retirement of Class A Common Stock, including excise tax									(1)	$ (214)	$ (123,314)
Reclassification of Class B Common Stock to Class A Common Stock			188,404	(188,406)					11				(9)
Repurchase of Class A Common Stock, including excise tax												$ (8,516)
Regular cash dividends declared on Class A Common Stock											(47,192)
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)	$ 0.83							$ 0.83
Beginning Balance at Aug. 31, 2024	$ 1,401,282		1,070,269	456,850	(21,144)	(114,235)	9,485		57				0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Associate Incentive Plans			5,617
Foreign Currency Translation Adjustment	(4,066)				(3,832)
Associate Incentive Plans						856
Net Income (Loss)	46,623			46,623			(929)
Repurchase and retirement of Class A Common Stock, including excise tax									0	$ (25)	(12,227)
Reclassification of Class B Common Stock to Class A Common Stock			0	0					0				0
Repurchase of Class A Common Stock, including excise tax												$ (5,828)
Regular cash dividends declared on Class A Common Stock											$ (47,537)
Dividend equivalents declared, net of cancellations				(360)
Foreign Currency Translation Adjustment	234						(234)
Ending Balance at Nov. 30, 2024	$ 1,383,406	$ 1,375,084	$ 1,075,861	$ 443,349	$ (24,976)	$ (119,207)	$ 8,322		$ 57				$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)								$ 0.85