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Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Apr. 02, 2022
Apr. 03, 2021
Earnings Per Share [Abstract]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 984,771 58,260
Numerator:    
Net earnings attributable to Wolverine World Wide, Inc. $ 9.7 $ 38.5
Adjustment for earnings allocated to non-vested restricted common stock (0.2) (0.7)
Net earnings used in calculating basic and diluted earnings per share $ 9.5 $ 37.8
Denominator:    
Weighted average shares outstanding 81,500,000 82,500,000
Adjustment for non-vested restricted common stock 0 (400,000)
Shares used in calculating basic earnings per share 81,500,000 82,100,000
Effect of dilutive stock options 400,000 1,100,000
Shares used in calculating diluted earnings per share 81,900,000 83,200,000
Net earnings per share:    
Basic $ 0.12 $ 0.46
Diluted $ 0.12 $ 0.45