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			40,753						1
Foreign Currency Translation Adjustment	$ 6,293				4,888
Associate Incentive Plans						2,661
Net (Loss) Income	255,634			255,634			32
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												$ (4,495)
Cash dividends declared on Common Stock											(111,973)				$ (20,511)
Dividend equivalents declared, net of cancellations				(1,555)
Foreign Currency Translation Adjustment	(1,405)						1,405
Ending Balance at Jun. 03, 2023	1,502,546	$ 1,489,260	839,106	776,365	(18,233)	(108,036)	13,286		49					9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)								$ 2,370					$ 2,370
Beginning Balance at Mar. 04, 2023			824,268	725,826	(20,437)	(108,781)	13,057		49					9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Associate Incentive Plans			14,838						0
Foreign Currency Translation Adjustment	2,474				2,204
Associate Incentive Plans						810
Net (Loss) Income	95,180			95,180			(41)
Repurchase and retirement of Class A Common Stock									0	0	0
Reclassification of Common Stock			0	0					0					0
Repurchase of Class A Common Stock												(65)
Cash dividends declared on Common Stock											(37,334)				(6,837)
Dividend equivalents declared, net of cancellations				(470)
Foreign Currency Translation Adjustment	(270)						270
Ending Balance at Jun. 03, 2023	1,502,546	1,489,260	839,106	776,365	(18,233)	(108,036)	13,286		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			26,106						0
Foreign Currency Translation Adjustment	244				172
Associate Incentive Plans						2,403
Net (Loss) Income	202,902			202,902			(897)
Repurchase and retirement of Class A Common Stock									(2)	(274)	(157,453)
Reclassification of Common Stock			188,404	(188,406)					11					(9)
Repurchase of Class A Common Stock												(9,437)
Cash dividends declared on Common Stock											(140,695)				0
Dividend equivalents declared, net of cancellations				(1,270)
Foreign Currency Translation Adjustment	(72)						72
Ending Balance at Jun. 01, 2024	1,414,209	1,401,616	1,063,738	470,085	(17,553)	(114,711)	12,593		57					0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)								2,490					0
Beginning Balance at Mar. 02, 2024			1,059,405	463,874	(17,340)	(115,488)	12,990		58					0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Associate Incentive Plans			4,366						0
Foreign Currency Translation Adjustment	(217)				(213)
Associate Incentive Plans						821
Net (Loss) Income	71,705			71,705			(393)
Repurchase and retirement of Class A Common Stock									(1)	$ (33)	(18,411)
Reclassification of Common Stock			0	0					0					0
Repurchase of Class A Common Stock												$ (44)
Cash dividends declared on Common Stock											$ (46,731)				$ 0
Dividend equivalents declared, net of cancellations				(352)
Foreign Currency Translation Adjustment	4						(4)
Ending Balance at Jun. 01, 2024	$ 1,414,209	$ 1,401,616	$ 1,063,738	$ 470,085	$ (17,553)	$ (114,711)	$ 12,593		$ 57					$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)								$ 830					$ 0