Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		8 Months Ended
	Sep. 12, 2015	Sep. 06, 2014	Sep. 12, 2015	Sep. 06, 2014
Numerator:
Net earnings attributable to Wolverine World Wide, Inc.	$ 45.8	$ 57.8	$ 111.2	$ 122.4
Adjustment for earnings allocated to non-vested restricted common stock	(0.8)	(1.1)	(2.0)	(2.3)
Net earnings used in calculating basic earnings per share	45.0	56.7	109.2	120.1
Adjustment for earnings reallocated from non-vested restricted common stock	0.0	0.0	0.1	0.1
Net earnings used in calculating diluted earnings per share	$ 45.0	$ 56.7	$ 109.3	$ 120.2
Denominator:
Weighted average shares outstanding	103.0	101.6	102.9	101.3
Adjustment for non-vested restricted common stock	(3.3)	(3.3)	(3.4)	(3.2)
Shares used in calculating basic earnings per share	99.7	98.3	99.5	98.1
Effect of dilutive stock options	1.6	1.7	1.7	1.9
Shares used in calculating diluted earnings per share	101.3	100.0	101.2	100.0
Net earnings per share:
Basic	$ 0.45	$ 0.58	$ 1.10	$ 1.22
Diluted	$ 0.44	$ 0.57	$ 1.08	$ 1.20