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Condensed Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands | Class A Common Stock [Member] Common Stock [Member] | Class A Common Stock [Member] Retained Earnings [Member] Regular Dividends [Member] | Class A Common Stock [Member] Retained Earnings [Member] Special Dividends [Member] | Class A Common Stock [Member] Treasury Stock [Member] | Class A Common Stock [Member] | Class B Common Stock [Member] Common Stock [Member] | Class B Common Stock [Member] Retained Earnings [Member] Regular Dividends [Member] | Class B Common Stock [Member] Retained Earnings [Member] Special Dividends [Member] | Class B Common Stock [Member] | Additional Paid-In-Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Loss [Member] | Treasury Stock [Member] | Total Shareholders' Equity Attributable to MSC Industrial [Member] | Noncontrolling Interest [Member] | Total
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Balance, Value at Aug. 31, 2019 | $ 46 |  |  |  |  | $ 10 |  |  |  | $ 659,226 | $ 946,651 | $ (22,776) | $ (104,607) |  | $ 5,329 |
Foreign Currency Translation Adjustment |  |  |  |  |  |  |  |  |  |  |  | 1,466 |  |  | 140 | $ 1,606
Net Income |  |  |  |  |  |  |  |  |  |  | 65,418 |  |  |  | 34 | 65,418
Associate Incentive Plans |  |  |  |  |  |  |  |  |  | 9,442 |  |  | 926 |  |  |
Repurchase of Class A common stock, Value |  |  |  | $ (3,009) |  |  |  |  |  |  |  |  |  |  |  |
Exchange of Class B common stock for Class A common stock, value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends declared on common stock |  | $ (33,891) |  |  |  |  | $ (7,645) |  |  |  |  |  |  |  |  |
Dividend equivalents declared, net of cancellations |  |  |  |  |  |  |  |  |  |  | (394) |  |  |  |  |
Balance, Value at Nov. 30, 2019 | 46 |  |  |  |  | 10 |  |  |  | 668,668 | 970,139 | (21,310) | (106,690) | $ 1,510,863 | 5,503 | 1,516,366
Dividends declared per common share |  |  |  |  | $ 0.75 |  |  |  | $ 0.75 |  |  |  |  |  |  |
Balance, Value at Aug. 29, 2020 | 47 |  |  |  |  | 10 |  |  |  | 690,739 | 749,515 | (21,418) | (103,948) |  | 5,628 | 1,320,573
Foreign Currency Translation Adjustment |  |  |  |  |  |  |  |  |  |  |  | 1,735 |  |  | 461 | 2,196
Net Income |  |  |  |  |  |  |  |  |  |  | 38,454 |  |  |  | 323 | 38,454
Associate Incentive Plans |  |  |  |  |  |  |  |  |  | 11,602 |  |  | 910 |  |  |
Repurchase of Class A common stock, Value |  |  |  | $ (3,159) |  |  |  |  |  |  |  |  |  |  |  |
Exchange of Class B common stock for Class A common stock, value | 1 |  |  |  |  | (1) |  |  |  |  |  |  |  |  |  |
Cash dividends declared on common stock |  | $ (34,761) | $ (163,511) |  |  |  | $ (7,054) | $ (31,840) |  |  |  |  |  |  |  |
Dividend equivalents declared, net of cancellations |  |  |  |  |  |  |  |  |  |  | (2,846) |  |  |  |  |
Balance, Value at Nov. 28, 2020 | $ 48 |  |  |  |  | $ 9 |  |  |  | $ 702,341 | $ 547,957 | $ (19,683) | $ (106,197) | $ 1,124,475 | $ 6,412 | $ 1,130,887
Dividends declared per common share |  |  |  |  | $ 4.25 |  |  |  | $ 4.25 |  |  |  |  |  |  |

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