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Earnings Per Share (Tables)
 9 Months Ended
Sep. 07, 2013
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share:
(In millions, except share and per share data)
12 Weeks Ended
 
36 Weeks Ended
 
September 7,
2013
 
September 8,
2012
 
September 7,
2013
 
September 8,
2012
Numerator:
 
 
 
 
 
 
 
Net earnings attributable to Wolverine World Wide, Inc.
$
54.4

 
$
32.7

 
$
102.1

 
$
84.4

Adjustment for earnings allocated to non-vested restricted common stock
(1.1
)
 
(0.5
)
 
(2.0
)
 
(1.5
)
Net earnings used in calculating basic earnings per share
53.3

 
32.2

 
100.1

 
82.9

Adjustment for earnings reallocated from non-vested restricted common stock
0.1

 
—

 
0.1

 
0.1

Net earnings used in calculating diluted earnings per share
$
53.4

 
$
32.2

 
$
100.2

 
$
83.0

Denominator:
 
 
 
 
 
 
 
Weighted average shares outstanding
100,474,793

 
97,743,844

 
100,087,863

 
97,333,545

Adjustment for non-vested restricted common stock
(3,391,901)

 
(2,758,969)

 
(3,280,184)

 
(2,784,802)

Shares used in calculating basic earnings per share
97,082,892

 
94,984,875

 
96,807,679

 
94,548,743

Effect of dilutive stock options
2,121,186

 
2,244,358

 
1,852,797

 
2,252,554

Shares used in calculating diluted earnings per share
99,204,078

 
97,229,233

 
98,660,476

 
96,801,297

Net earnings per share:
 
 
 
 
 
 
 
Basic
$
0.55

 
$
0.34

 
$
1.03

 
$
0.88

Diluted
$
0.54

 
$
0.33

 
$
1.02

 
$
0.86