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Earnings Per Share
 3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Earnings Per Share Text Block
Earnings Per Share
     
The following is the calculation of basic and diluted weighted-average shares outstanding and earnings per share (EPS) for the indicated periods.
 
 
Three Months Ended 
 March 31,
 
 
2017
 
2016
 
 
(In millions, except per share data)
Net income (loss)
 
$
147

 
$
(624
)
 
 
 
 
 
Weighted-average shares (denominator):
 
 
 
 

Weighted-average shares — basic
 
199

 
177

Dilution effect of stock options and unvested restricted stock awards and restricted stock units outstanding at end of period
 
1

 
—

Weighted-average shares — diluted
 
200

 
177

Excluded due to anti-dilutive effect
 
1

 
1

 
 
 
 
 
Earnings (loss) per share:
 
 
 
 

Basic
 
$
0.74

 
$
(3.52
)
Diluted
 
$
0.73

 
$
(3.52
)