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Earnings Per Share (Tables)
12 Months Ended
Dec. 30, 2023
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table sets forth the computation of basic and diluted earnings per share:
Fiscal Year
(In millions, except per share data)202320222021
Numerator:
Net earnings (loss) attributable to Wolverine World Wide, Inc.$(39.6)$(188.3)$68.6 
Less: net earnings attributed to participating share-based awards
(0.7)(0.6)(1.1)
Net earnings (loss) used to calculate earnings per share$(40.3)$(188.9)$67.5 
Denominator:
Weighted average shares outstanding
79.4 79.7 82.4 
Adjustment for unvested restricted common stock
— — (0.1)
Shares used to calculate basic earnings per share
79.4 79.7 82.3 
Effect of dilutive share-based awards
— — 1.0 
Shares used to calculate diluted earnings per share
79.4 79.7 83.3 
Net earnings (loss) per share:
Basic
$(0.51)$(2.37)$0.82 
Diluted
$(0.51)$(2.37)$0.81