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Net Income Per Share (Tables) | 12 Months Ended
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Aug. 31, 2019
Net Income Per Share [Abstract] |
Basic And Diluted Net Income Per Common Share Under The Two-Class Method |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | For the Fiscal Years Ended
﻿ |  | August 31, |  | September 1, |  | September 2,
﻿ |  | 2019 |  | 2018 |  | 2017
﻿ |  | (52 weeks) |  | (52 weeks) |  | (52 weeks)
﻿ |  |  |  |  |  |  |  |  |
﻿Net income attributable to MSC Industrial as reported |  | $ | 288,865 |  | $ | 329,223 |  | $ | 231,431
﻿Less: Distributed net income available to participating securities |  |  | (45) |  |  | (89) |  |  | (206)
﻿Less: Undistributed net income available to participating securities |  |  | (75) |  |  | (291) |  |  | (410)
﻿ |  |  |  |  |  |  |  |  |
﻿Numerator for basic net income per share: |  |  |  |  |  |  |  |  |
﻿Undistributed and distributed net income available to common shareholders |  | $ | 288,745 |  | $ | 328,843 |  | $ | 230,815
﻿Add: Undistributed net income allocated to participating securities |  |  | 75 |  |  | 291 |  |  | 410
﻿Less: Undistributed net income reallocated to participating securities |  |  | (75) |  |  | (290) |  |  | (408)
﻿ |  |  |  |  |  |  |  |  |
﻿Numerator for diluted net income per share: |  |  |  |  |  |  |  |  |
﻿Undistributed and distributed net income available to common shareholders |  | $ | 288,745 |  | $ | 328,844 |  | $ | 230,817
﻿ |  |  |  |  |  |  |  |  |
﻿Denominator: |  |  |  |  |  |  |  |  |
﻿Weighted average shares outstanding for basic net income per share |  |  | 55,245 |  |  | 56,355 |  |  | 56,591
﻿Effect of dilutive securities |  |  | 263 |  |  | 352 |  |  | 380
﻿Weighted average shares outstanding for diluted net income per share |  |  | 55,508 |  |  | 56,707 |  |  | 56,971
﻿ |  |  |  |  |  |  |  |  |
﻿Net income per share two-class method: |  |  |  |  |  |  |  |  |
﻿Basic |  | $ | 5.23 |  | $ | 5.84 |  | $ | 4.08
﻿Diluted |  | $ | 5.20 |  | $ | 5.80 |  | $ | 4.05
﻿ |  |  |  |  |  |  |  |  |
﻿Potentially dilutive securities |  |  | 1,080 |  |  | 207 |  |  | —
﻿

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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