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Earnings Per Share (Tables) | 6 Months Ended
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Feb. 28, 2021
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table calculates basic earnings per common share and diluted earnings per common share for the periods presented (in millions, except per share data):
| Three Months Ended |  | Six Months Ended
| February 28, 2021 |  | February 29, 2020 |  | February 28, 2021 |  | February 29, 2020
Net income | $ | 62.9 |  |  | $ | 57.2 |  |  | $ | 122.5 |  |  | $ | 114.2 |
Basic weighted average shares outstanding | 36.0 |  |  | 39.5 |  |  | 36.9 |  |  | 39.5 |
Common stock equivalents | 0.2 |  |  | 0.2 |  |  | 0.2 |  |  | 0.2 |
Diluted weighted average shares outstanding | 36.2 |  |  | 39.7 |  |  | 37.1 |  |  | 39.7 |
Basic earnings per share | $ | 1.75 |  |  | $ | 1.45 |  |  | $ | 3.32 |  |  | $ | 2.89 |
Diluted earnings per share | $ | 1.74 |  |  | $ | 1.44 |  |  | $ | 3.30 |  |  | $ | 2.88 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | The following table presents stock options, performance stock awards, and restricted stock awards that were excluded from the diluted earnings per share calculation for the periods presented as the effect of inclusion would have been antidilutive:
| Three Months Ended |  | Six Months Ended
| February 28, 2021 |  | February 29, 2020 |  | February 28, 2021 |  | February 29, 2020
Stock options | 954,677 |  |  | 443,595 |  |  | 1,077,258 |  |  | 361,283 |
Performance stock awards | — |  |  | — |  |  | — |  |  | 7,569 |
Restricted stock awards | 71,812 |  |  | 102,210 |  |  | 116,219 |  |  | 116,962 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + 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 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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