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			25,915						1
Foreign Currency Translation Adjustment	$ 3,819				2,684
Associate Incentive Plans						1,851
Net (Loss) Income	160,454			160,454			73
Repurchase and retirement of Class A Common Stock									0	$ (55)	$ (26,522)
Reclassification of Common Stock			0	0					0					0
Repurchase of Class A Common Stock												$ (4,430)
Cash dividends declared on Common Stock											(74,639)				$ (13,674)
Dividend equivalents declared, net of cancellations				(1,085)
Foreign Currency Translation Adjustment	(1,135)						1,135
Ending Balance at Mar. 04, 2023	1,433,991	$ 1,420,934	824,268	725,826	(20,437)	(108,781)	13,057		49					9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)								$ 1,580					$ 1,580
Beginning Balance at Dec. 03, 2022			814,493	703,565	(22,186)	(109,592)	12,082		49					9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Associate Incentive Plans			9,800						0
Foreign Currency Translation Adjustment	2,549				1,749
Associate Incentive Plans						1,014
Net (Loss) Income	79,140			79,140			175
Repurchase and retirement of Class A Common Stock									0	(25)	(12,240)
Reclassification of Common Stock			0	0					0					0
Repurchase of Class A Common Stock												(203)
Cash dividends declared on Common Stock											(37,269)				(6,837)
Dividend equivalents declared, net of cancellations				(533)
Foreign Currency Translation Adjustment	(800)						800
Ending Balance at Mar. 04, 2023	1,433,991	1,420,934	824,268	725,826	(20,437)	(108,781)	13,057		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			21,740						0
Foreign Currency Translation Adjustment	461				385
Associate Incentive Plans						1,582
Net (Loss) Income	131,197			131,197			(504)
Repurchase and retirement of Class A Common Stock									(1)	(241)	(139,042)
Reclassification of Common Stock			188,404	(188,406)					11					(9)
Repurchase of Class A Common Stock												(9,393)
Cash dividends declared on Common Stock											(93,964)				0
Dividend equivalents declared, net of cancellations				(918)
Foreign Currency Translation Adjustment	(76)						76
Ending Balance at Mar. 02, 2024	1,403,499	1,390,509	1,059,405	463,874	(17,340)	(115,488)	12,990		58					0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)								1,660					0
Beginning Balance at Dec. 02, 2023			1,052,729	464,962	(17,277)	(115,399)	13,152		58					0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Associate Incentive Plans			6,703						0
Foreign Currency Translation Adjustment	57				(63)
Associate Incentive Plans						788
Net (Loss) Income	61,847			61,847			(282)
Repurchase and retirement of Class A Common Stock									0	$ (27)	(15,728)
Reclassification of Common Stock			0	0					0					0
Repurchase of Class A Common Stock												$ (877)
Cash dividends declared on Common Stock											$ (46,772)				$ 0
Dividend equivalents declared, net of cancellations				(435)
Foreign Currency Translation Adjustment	(120)						120
Ending Balance at Mar. 02, 2024	$ 1,403,499	$ 1,390,509	$ 1,059,405	$ 463,874	$ (17,340)	$ (115,488)	$ 12,990		$ 58					$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)								$ 830					$ 0