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Earnings Per Share
 6 Months Ended
Jun. 30, 2015
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
 
We compute basic and diluted earnings per share ("EPS") in accordance with the two-class method. Net income (loss) attributable to Ensco used in our computations of basic and diluted EPS is adjusted to exclude net income allocated to non-vested shares granted to our employees and non-employee directors. Weighted-average shares outstanding used in our computation of diluted EPS is calculated using the treasury stock method and excludes non-vested shares.
    
The following table is a reconciliation of income (loss) from continuing operations attributable to Ensco shares used in our basic and diluted EPS computations for the three-month and six-month periods ended June 30, 2015 and 2014 (in millions):
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2015
 
2014
 
2015
 
2014
Income (loss) from continuing operations attributable to Ensco
$
270.4

 
$
(354.2
)
 
$
595.3

 
$
(59.6
)
Income from continuing operations allocated to non-vested share awards
(3.7
)
 
(2.1
)
 
(7.4
)
 
(3.9
)
Income (loss) from continuing operations attributable to Ensco shares
$
266.7

 
$
(356.3
)
 
$
587.9

 
$
(63.5
)

 
The following table is a reconciliation of the weighted-average shares used in our basic and diluted EPS computations for the three-month and six-month periods ended June 30, 2015 and 2014 (in millions):
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2015
 
2014
 
2015
 
2014
Weighted-average shares - basic
232.1

 
231.5

 
232.0

 
231.4

Potentially dilutive shares
.1

 
—

 
.1

 
—

Weighted-average shares - diluted
232.2

 
231.5

 
232.1

 
231.4


 
Antidilutive share options totaling 500,000 were excluded from the computation of diluted EPS for the three-month and six-month periods ended June 30, 2015 and 2014.