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Earnings Per Share
3 Months Ended
Mar. 31, 2012
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 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 includes the dilutive effect of share options using the treasury stock method and excludes non-vested shares.

    
The following table is a reconciliation of net income attributable to Ensco shares used in our basic and diluted EPS computations for the quarters ended March 31, 2012 and 2011 (in millions):
 
2012
 
2011
 
 
 
 
Net income attributable to Ensco
$
265.4

 
$
64.6

Net income allocated to non-vested shares
(2.7
)
 
(1.0
)
Net income attributable to Ensco shares
$
262.7

 
$
63.6


 
The following table is a reconciliation of the weighted-average shares used in our basic and diluted EPS computations for the quarters ended March 31, 2012 and 2011 (in millions):
 
2012
 
2011
 
 
 
 
Weighted-average shares - basic
228.8

 
141.2

Potentially dilutive share options
.4

 
.2

Weighted-average shares - diluted
229.2

 
141.4


 
Antidilutive share options totaling 400,000 were excluded from the computation of diluted EPS for the quarters ended March 31, 2012 and 2011.