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Stockholders' Equity
9 Months Ended
Sep. 30, 2018
Equity [Abstract]  
STOCKHOLDERS' EQUITY
STOCKHOLDERS' EQUITY
Earnings per Share
For Southern Company, the only difference in computing basic and diluted earnings per share is attributable to awards outstanding under stock-based compensation plans. See Note 8 to the financial statements of Southern Company in Item 8 of the Form 10-K for information on stock-based compensation plans. The effect of stock-based compensation plans was determined using the treasury stock method. Shares used to compute diluted earnings per share were as follows:
 
Three Months Ended
September 30, 2018
Three Months Ended
September 30, 2017
Nine Months Ended
September 30, 2018
Nine Months Ended
September 30, 2017
 
(in millions)
As reported shares
1,023

1,003

1,016

998

Effect of stock-based compensation
6

7

5

7

Diluted shares
1,029

1,010

1,021

1,005

Stock-based compensation awards that were not included in the diluted earnings per share calculation because they were anti-dilutive were immaterial for the three and nine months ended September 30, 2018 and 2017.
Changes in Stockholders' Equity
The following table presents year-to-date changes in stockholders' equity of Southern Company:
 
Number of
Common Shares
 
Common
Stockholders'
Equity
Preferred and
Preference
Stock of
Subsidiaries
 
Total
Stockholders'
Equity
 
Issued
Treasury
 
Noncontrolling Interests(a)
 
(in thousands)
 
(in millions)
Balance at December 31, 2017
1,008,532

(929
)
 
$
24,167

$

$
1,361

$
25,528

Consolidated net income attributable to Southern Company


 
1,948



1,948

Other comprehensive income


 
52



52

Stock issued
21,342


 
878



878

Stock-based compensation


 
74



74

Cash dividends on common stock


 
(1,805
)


(1,805
)
Contributions from noncontrolling interests


 


154

154

Distributions to noncontrolling interests


 


(87
)
(87
)
Net income attributable to noncontrolling interests


 


71

71

Sale of noncontrolling interests(b)


 
(410
)

1,690

1,280

Other

(57
)
 
(27
)

(1
)
(28
)
Balance at September 30, 2018
1,029,874

(986
)
 
$
24,877

$

$
3,188

$
28,065

 
 
 
 
 
 
 
 
Balance at December 31, 2016
991,213

(819
)
 
$
24,758

$
609

$
1,245

$
26,612

Consolidated net income attributable to Southern Company


 
347



347

Other comprehensive income (loss)


 
(2
)


(2
)
Stock issued
13,308


 
613



613

Stock-based compensation


 
97



97

Cash dividends on common stock


 
(1,716
)


(1,716
)
Preference stock redemption


 

(150
)

(150
)
Contributions from noncontrolling interests


 


77

77

Distributions to noncontrolling interests


 


(87
)
(87
)
Net income attributable to noncontrolling interests


 


45

45

Reclassification from redeemable noncontrolling interests


 


114

114

Other

(75
)
 
(15
)
3

1

(11
)
Balance at September 30, 2017
1,004,521

(894
)
 
$
24,082

$
462

$
1,395

$
25,939


(a)
Primarily related to Southern Power and excludes redeemable noncontrolling interests. See Note 10 to the financial statements of Southern Power in Item 8 of the Form 10-K for additional information.
(b)
See Note (J) under "Southern Power – Sale of Solar Facility Interests" for additional information.