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Earnings Per Share Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended							4 Months Ended	12 Months Ended
	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Sep. 10, 2016	Jun. 18, 2016	Mar. 26, 2016	Dec. 31, 2016	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net earnings attributable to Wolverine World Wide, Inc.	$ (60.3)	$ 23.2	$ 20.7	$ 16.7	$ 48.2	$ 24.0	$ 17.4	$ (1.9)	$ 0.3	$ 87.7	$ 122.8
Adjustment for earnings allocated to nonvested restricted common stock									0.0	(2.1)	(2.8)
Net earnings used to calculate basic earnings per share									0.3	85.6	120.0
Adjustment for earnings (loss) reallocated to nonvested restricted common stock									(0.2)	0.1	0.1
Net earnings used to calculate diluted earnings per share									$ 0.1	$ 85.7	$ 120.1
Weighted average shares outstanding									96.4	99.0	102.0
Adjustment for nonvested restricted common stock									(2.7)	(3.7)	(3.4)
Shares used to calculate basic earnings per share									93.7	95.3	98.6
Effect of dilutive stock options									1.7	0.9	1.4
Shares used to calculate diluted earnings per share									95.4	96.2	100.0
Earnings per share - Basic	$ (0.65)	$ 0.24	$ 0.21	$ 0.17	$ 0.49	$ 0.25	$ 0.18	$ (0.02)	$ 0.00	$ 0.90	$ 1.22
Earnings per share - Diluted	$ (0.65)	$ 0.24	$ 0.21	$ 0.17	$ 0.49	$ 0.24	$ 0.18	$ (0.02)	$ 0.00	$ 0.89	$ 1.20

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of stock options or restrictive stock units (RSUs).

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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Number of shares of restricted stock determined by relating the portion of time within a reporting period that restricted shares have been outstanding to the total time in that period. Restricted shares are subject to sales, contractual, regulatory or other restrictions that prevent or inhibit the holder from freely disposing of them before the restriction ends.

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