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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 26, 2020
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted earnings per share.
| Quarter Ended |  | Year-To-Date Ended
(In millions, except per share data) | September 26, 2020 |  | September 28, 2019 |  | September 26, 2020 |  | September 28, 2019
Numerator: |  |  |  |  |  |  |
Net earnings attributable to Wolverine World Wide, Inc. | $ | 22.4 |  |  | $ | 48.7 |  |  | $ | 33.8 |  |  | $ | 129.4 |
Adjustment for earnings allocated to non-vested restricted common stock | (0.6) |  |  | (1.0) |  |  | (0.8) |  |  | (2.6) |
Net earnings used in calculating basic earnings per share | 21.8 |  |  | 47.7 |  |  | 33.0 |  |  | 126.8 |
Adjustment for earnings reallocated from non-vested restricted common stock | — |  |  | — |  |  | — |  |  | 0.1 |
Net earnings used in calculating basic and diluted earnings per share | $ | 21.8 |  |  | $ | 47.7 |  |  | $ | 33.0 |  |  | $ | 126.9 |
Denominator: |  |  |  |  |  |  |
Weighted average shares outstanding | 81.9 |  | 83.5 |  | 81.7 |  | 87.3
Adjustment for non-vested restricted common stock | (0.9) |  | (0.5) |  | (0.7) |  | (0.7)
Shares used in calculating basic earnings per share | 81.0 |  | 83.0 |  | 81.0 |  | 86.6
Effect of dilutive stock options | 0.5 |  | 0.9 |  | 0.5 |  | 1.4
Shares used in calculating diluted earnings per share | 81.5 |  | 83.9 |  | 81.5 |  | 88.0
Net earnings per share: |  |  |  |  |  |  |
Basic | $ | 0.27 |  |  | $ | 0.57 |  |  | $ | 0.41 |  |  | $ | 1.46 |
Diluted | $ | 0.27 |  |  | $ | 0.57 |  |  | $ | 0.41 |  |  | $ | 1.44 |

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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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