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Earnings Per Share
 12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Earnings Per Share
Note 3— Earnings Per Share
The following table presents the computation of basic and diluted earnings per share for Noble-UK:
 
 
Year Ended December 31,
 
 
2017
 
2016
 
2015
Numerator:
 
 

 
 

 
 

Basic
 
 
 
 
 
 
Net income (loss) attributable to Noble-UK
 
$
(516,511
)
 
$
(929,580
)
 
$
511,000

Net income (loss) from discontinued operations, net of tax
 
1,486

 
—

 
—

      Earnings allocated to unvested share-based payment awards
 
—

 
—

 
(10,856
)
Net income (loss) from continuing operations to common shareholders - basic
 
$
(515,025
)
 
$
(929,580
)
 
$
500,144

Diluted
 
 

 
 

 
 

Net income (loss) attributable to Noble-UK
 
$
(516,511
)
 
$
(929,580
)
 
$
511,000

Net income (loss) from discontinued operations, net of tax
 
1,486

 
—

 
—

Net income (loss) from continuing operations to common shareholders - diluted
 
$
(515,025
)
 
$
(929,580
)
 
$
511,000

Denominator:
 
 

 
 

 
 

Weighted average shares outstanding - basic
 
244,743

 
243,127

 
242,146

   Incremental shares issuable from assumed exercise of stock
options and unvested share-based payment awards
 
—

 
—

 
5,256

Weighted average shares outstanding - diluted
 
244,743

 
243,127

 
247,402

Earnings per share
 
 

 
 

 
 

Basic:
 
 
 
 
 
 
Income (loss) from continuing operations
 
$
(2.10
)
 
$
(3.82
)
 
$
2.06

Income (loss) from discontinued operations
 
(0.01
)
 
—

 
—

Net income (loss) attributable to Noble-UK
 
$
(2.11
)
 
$
(3.82
)
 
$
2.06

Diluted:
 
 
 
 
 


Income (loss) from continuing operations
 
$
(2.10
)
 
$
(3.82
)
 
$
2.06

Income (loss) from discontinued operations
 
(0.01
)
 
—

 
—

Net income (loss) attributable to Noble-UK
 
$
(2.11
)
 
$
(3.82
)
 
$
2.06

Dividends per share
 
$
—

 
$
0.20

 
$
1.28


Only those items having a dilutive impact on our basic earnings per share are included in diluted earnings per share. For the years ended December 31, 2017 and 2016, 12.0 million and 9.9 million share-based awards, respectively, were excluded from the diluted earnings per share since the effect would have been anti-dilutive. For the year ended December 31, 2015, approximately 1.7 million underlying stock options were excluded from the diluted earnings per share as such stock options were anti-dilutive.