Net Income Per Share (Tables)	6 Months Ended
	Feb. 26, 2022
Net Income Per Share [Abstract]
Computation Of Basic And Diluted Net Income Per Common Share Under Treasury Stock Method	Thirteen Weeks Ended Twenty-Six Weeks Ended February 26, February 27, February 26, February 27, 2022 2021 2022 2021Numerator: Net income attributable to MSC Industrial as reported $ 69,931  $ 18,085  $ 135,998  $ 56,539 Denominator: Weighted-average shares outstanding for basic net income per share 55,799  55,838  55,664  55,749 Effect of dilutive securities 172  295  281  270 Weighted-average shares outstanding for diluted net income per share 55,971  56,133  55,945  56,019 Net income per share: Basic $ 1.25  $ 0.32  $ 2.44  $ 1.01 Diluted $ 1.25  $ 0.32  $ 2.43  $ 1.01  Potentially dilutive securities 364  324  379  933