Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 15, 2013	Jun. 16, 2012	Jun. 15, 2013	Jun. 16, 2012
Numerator:
Net earnings attributable to Wolverine World Wide, Inc.	$ 17.9	$ 20.5	$ 47.7	$ 51.7
Adjustment for earnings allocated to non-vested restricted common stock	(0.3)	(0.3)	(0.9)	(0.9)
Net earnings used in calculating basic earnings per share	17.6	20.2	46.8	50.8
Adjustment for earnings reallocated from non-vested restricted common stock
Net earnings used in calculating diluted earnings per share	$ 17.6	$ 20.2	$ 46.8	$ 50.8
Denominator:
Weighted average shares outstanding	50,163,722	48,694,332	49,947,199	48,564,198
Adjustment for non-vested restricted common stock	(1,763,899)	(1,396,931)	(1,612,163)	(1,386,317)
Shares used in calculating basic earnings per share	48,399,823	47,297,401	48,335,036	47,177,881
Effect of dilutive stock options	918,174	1,123,863	868,941	1,123,286
Shares used in calculating diluted earnings per share	49,317,997	48,421,264	49,203,977	48,301,167
Net earnings per share:
Basic	$ 0.36	$ 0.43	$ 0.97	$ 1.08
Diluted	$ 0.36	$ 0.42	$ 0.95	$ 1.05

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 amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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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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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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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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Adjustment for earnings allocated to nonvested restricted common stock.

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Shares used in calculating basic earnings per share.

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