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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2017
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.
(In millions, except per share data) | 13 Weeks Ended September 30, 2017 |  | 12 Weeks Ended September 10, 2016 |  | 39 Weeks Ended September 30, 2017 |  | 36 Weeks Ended September 10, 2016
Numerator: |  |  |  |  |  |  |
Net earnings attributable to Wolverine World Wide, Inc. | $ | 23.2 |  |  | $ | 48.2 |  |  | $ | 60.6 |  |  | $ | 89.6 |
Adjustment for earnings allocated to non-vested restricted common stock | (0.5 | ) |  | (1.0 | ) |  | (1.3 | ) |  | (1.9 | )
Net earnings used in calculating basic and diluted earnings per share | $ | 22.7 |  |  | $ | 47.2 |  |  | $ | 59.3 |  |  | $ | 87.7 |
Denominator: |  |  |  |  |  |  |
Weighted average shares outstanding | 96.1 |  |  | 99.4 |  |  | 96.6 |  |  | 99.4 |
Adjustment for non-vested restricted common stock | (2.1 | ) |  | (3.8 | ) |  | (2.2) |  |  | (3.8) |
Shares used in calculating basic earnings per share | 94.0 |  |  | 95.6 |  |  | 94.4 |  |  | 95.6 |
Effect of dilutive stock options | 1.8 |  |  | 1.3 |  |  | 1.6 |  |  | 0.7 |
Shares used in calculating diluted earnings per share | 95.8 |  |  | 96.9 |  |  | 96.0 |  |  | 96.3 |
Net earnings per share: |  |  |  |  |  |  |
Basic | $ | 0.24 |  |  | $ | 0.49 |  |  | $ | 0.63 |  |  | $ | 0.92 |
Diluted | $ | 0.24 |  |  | $ | 0.49 |  |  | $ | 0.62 |  |  | $ | 0.91 |

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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/2003/role/presentationRef -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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