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Earnings Per Share
 9 Months Ended
Sep. 06, 2014
Earnings Per Share [Abstract]  
Earnings Per Share
EARNINGS PER SHARE
The Company calculates earnings per share in accordance with FASB Accounting Standards Codification (“ASC”) Topic 260, Earnings Per Share (“ASC 260”). ASC 260 addresses whether instruments granted in share-based payment transactions are participating securities prior to vesting, and, therefore, need to be included in the earnings allocation in computing earnings per share under the two-class method. Under the guidance in ASC 260, the Company’s unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid, are participating securities and must be included in the computation of earnings per share pursuant to the two-class method.
On July 11, 2013, the Company’s Board of Directors approved a two-for-one stock split in the form of a stock dividend that was paid on November 1, 2013 to stockholders of record on October 1, 2013. On April 24, 2014, the Company amended its Restated Certificate of Incorporation to increase the number of shares of the Company’s authorized common stock from 160,000,000 shares to 320,000,000 shares. All share and per share data in this Quarterly Report on Form 10-Q has been presented to reflect the split and increase in authorized shares.
The following table sets forth the computation of basic and diluted earnings per share.
 
12 Weeks Ended
 
36 Weeks Ended
(In millions, except share and per share data)
September 6,
2014
 
September 7,
2013
 
September 6,
2014
 
September 7,
2013
Numerator:
 
 
 
 
 
 
 
Net earnings attributable to Wolverine World Wide, Inc.
$
57.8

 
$
54.4

 
$
122.4

 
$
102.1

Adjustment for earnings allocated to non-vested restricted common stock
(1.1
)
 
(1.1
)
 
(2.3
)
 
(2.0
)
Net earnings used in calculating basic earnings per share
56.7

 
53.3

 
120.1

 
100.1

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
$
56.7

 
$
53.4

 
$
120.2

 
$
100.2

Denominator:
 
 
 
 
 
 
 
Weighted average shares outstanding
101,570,974

 
100,474,793

 
101,322,501

 
100,087,863

Adjustment for non-vested restricted common stock
(3,290,346
)
 
(3,391,901
)
 
(3,238,487)

 
(3,280,184)

Shares used in calculating basic earnings per share
98,280,628

 
97,082,892

 
98,084,014

 
96,807,679

Effect of dilutive stock options
1,739,295

 
2,121,186

 
1,884,606

 
1,852,797

Shares used in calculating diluted earnings per share
100,019,923

 
99,204,078

 
99,968,620

 
98,660,476

Net earnings per share:
 
 
 
 
 
 
 
Basic
$
0.58

 
$
0.55

 
$
1.22

 
$
1.03

Diluted
$
0.57

 
$
0.54

 
$
1.20

 
$
1.02


For the 12 and 36 weeks ended September 6, 2014, options relating to 1,498,446 and 1,053,424 shares of common stock outstanding, respectively, have not been included in the denominator for the computation of diluted earnings per share because they were anti-dilutive.
For the 12 and 36 weeks ended September 7, 2013, options relating to 36,849 and 687,888 shares of common stock outstanding, respectively, have not been included in the denominator for the computation of diluted earnings per share because they were anti-dilutive.