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Earnings Per Share (Tables)
 12 Months Ended
Jan. 03, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table sets forth the computation of basic and diluted earnings per share:
 
Fiscal Year
(In millions, except share and per share data)
2014
 
2013
 
2012
Numerator:
 
 
 
 
 
Net earnings attributable to Wolverine World Wide, Inc.
$
133.1

 
$
100.4

 
$
80.7

Adjustment for earnings allocated to nonvested restricted common stock
(2.9
)
 
(2.3
)
 
(1.7
)
Net earnings used to calculate basic earnings per share
130.2

 
98.1

 
79.0

Adjustment for earnings reallocated to nonvested restricted common stock
0.1

 
0.1

 
0.1

Net earnings used to calculate diluted earnings per share
$
130.3

 
$
98.2

 
$
79.1

Denominator:
 
 
 
 
 
Weighted average shares outstanding
101,433,114

 
100,253,617

 
97,632,336

Adjustment for nonvested restricted common stock
(3,228,955
)
 
(3,308,162
)
 
(2,757,836
)
Shares used to calculate basic earnings per share
98,204,159

 
96,945,455

 
94,874,500

Effect of dilutive stock options
1,860,661

 
1,993,343

 
2,154,152

Shares used to calculate diluted earnings per share
100,064,820

 
98,938,798

 
97,028,652

Net earnings per share:
 
 
 
 
 
Basic
$
1.33

 
$
1.01

 
$
0.84

Diluted
$
1.30

 
$
0.99

 
$
0.81