v2.3.0.15
Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2011
Earnings Per Share [Abstract] 
Reconciliation Of Net Income Attributable To Ensco Shares
 
Three Months Ended 
        September 30,        
     Nine Months Ended
            September 30,      
 
 
  2011 
  2010 
    2011 
      2010
                   
Net income attributable to Ensco
  
$204.5
  
$130.5
  
$371.0
  
$446.6
  
Net income allocated to non-vested share awards
  
(2.3
)
(1.8
)
(4.3
)
(5.7
)
Net income attributable to Ensco shares
  
$202.2
  
$128.7
  
$366.7
  
$440.9
  
Reconciliation Of Weighted-Average Shares Used In Earnings Per Share Computations
 
Three Months Ended
        September 30,       
     Nine Months Ended
             September 30,       
 
 
  2011 
   2010 
   2011 
        2010 
                    
Weighted-average shares - basic
  
228.1
  
141.1
  
180.0
  
140.9
  
Potentially dilutive share options
  
.5
  
.1
  
.4
  
.1
  
Weighted-average shares - diluted
  
228.6
  
141.2
  
180.4
  
141.0