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Summary of Significant Accounting Policies - Computation of Basic and Diluted Earnings Per Shares (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 4 Months Ended 12 Months Ended
Sep. 08, 2012
Jun. 16, 2012
Mar. 24, 2012
Sep. 10, 2011
Jun. 18, 2011
Mar. 26, 2011
Dec. 29, 2012
Dec. 31, 2011
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Numerator:                      
Net earnings attributable to Wolverine World Wide, Inc. $ 32.7 $ 20.5 $ 31.2 $ 40.4 $ 24.0 $ 35.9 $ (3.7) $ 23.0 $ 80.7 $ 123.3 $ 104.5
Adjustment for earnings allocated to nonvested restricted common stock                 (1.7) (2.6) (1.6)
Net earnings used to calculate basic earnings per share                 79.0 120.7 102.9
Adjustment for earnings reallocated to nonvested restricted common stock                 0.1 0.1  
Net earnings used to calculate diluted earnings per share                 $ 79.1 $ 120.8 $ 102.9
Denominator:                      
Weighted average shares outstanding                 48,816,168 48,910,599 49,051,739
Adjustment for nonvested restricted common stock                 (1,378,918) (1,432,541) (1,206,460)
Shares used to calculate basic earnings per share                 47,437,250 47,478,058 47,845,279
Effect of dilutive stock options                 1,077,076 1,250,612 1,011,731
Shares used to calculate diluted earnings per share                 48,514,326 48,728,670 48,857,010
Net earnings per share:                      
Basic $ 0.68 $ 0.43 $ 0.65 $ 0.84 $ 0.49 $ 0.74 $ (0.08) $ 0.48 $ 1.67 $ 2.54 $ 2.15
Diluted $ 0.66 $ 0.42 $ 0.64 $ 0.82 $ 0.48 $ 0.72 $ (0.08) $ 0.47 $ 1.63 $ 2.48 $ 2.11