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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 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Jun. 27, 2020
Jun. 29, 2019
Earnings Per Share [Abstract]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,955,425 134,549 1,183,907 38,932
Numerator:        
Net earnings (loss) attributable to Wolverine World Wide, Inc. $ (1.6) $ 40.2 $ 11.4 $ 80.7
Adjustment for earnings allocated to non-vested restricted common stock (0.2) (0.8) (0.4) (1.6)
Net earnings (loss) used in calculating basic earnings per share (1.8) 39.4 11.0 79.1
Adjustment for earnings reallocated from non-vested restricted common stock 0.0 0.0 0.0 0.1
Net earnings (loss) used in calculating basic and diluted earnings per share $ (1.8) $ 39.4 $ 11.0 $ 79.2
Denominator:        
Weighted average shares outstanding 81,700,000 87,400,000 81,600,000 89,200,000
Adjustment for non-vested restricted common stock (800,000) (500,000) (600,000) (800,000)
Shares used in calculating basic earnings per share 80,900,000 86,900,000 81,000,000.0 88,400,000
Effect of dilutive stock options 0 1,400,000 500,000 1,700,000
Shares used in calculating diluted earnings per share 80,900,000 88,300,000 81,500,000 90,100,000
Net earnings (loss) per share:        
Basic $ (0.02) $ 0.45 $ 0.14 $ 0.89
Diluted $ (0.02) $ 0.45 $ 0.14 $ 0.88