Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	33,614	101,321
Numerator:
Net earnings attributable to Wolverine World Wide, Inc.	$ 40.5	$ 46.7
Adjustment for earnings allocated to non-vested restricted common stock	(0.8)	(0.9)
Net earnings used in calculating basic and diluted earnings per share	$ 39.7	$ 45.8
Denominator:
Weighted average shares outstanding	91,000,000	95,700,000
Adjustment for non-vested restricted common stock	(1,000,000)	(2,000,000)
Shares used in calculating basic earnings per share	90,000,000	93,700,000
Effect of dilutive stock options	1,800,000	1,900,000
Shares used in calculating diluted earnings per share	91,800,000	95,600,000
Net earnings per share:
Basic	$ 0.44	$ 0.49
Diluted	$ 0.43	$ 0.48