v2.4.0.6
Defined Contribution and Employee Incentive Plans (Tables)
 3 Months Ended
Mar. 31, 2013
Notes to Consolidated Financial Statements  
Share grants and Fair Value
 
 
Shares
   
Fair Value at Date of Grant ($Millions)
        
In connection with IPO
                927,943
  $
                    27.8
July 31, 2007
                  16,665
   
                         0.4
December 31, 2007
             1,055,206
   
                       32.9
December 31, 2008
             2,065,432
   
                       35.6
December 31, 2009
             2,448,031
   
                       42.8
December 31, 2010
             2,513,738
   
                       43.2
December 31, 2011
             3,411,613
   
                       50.8
January 6, 2012
             1,215,866
   
                       18.4
December 31, 2012
             3,629,960
   
                       50.5
 
           17,284,454
  $
                   302.4

       
2007 Stock Incentive Plan, ROI Summary
 
 
 Shares
 
 
2007 Stock
  
2007 ROI Unit
 
 
Incentive Plan
  
Stock Plan
 
  Shares   Shares 
Balance, December 31, 2012
           12,402,482
  
                 169,289
 
          
Granted
                            -
  
                            -
 
Forfeited
                (50,827
)  
                   (6,423
) 
Distributed
                  (3,605
)  
                   (1,742
) 
Balance, March 31, 2013
           12,348,050
  
                 161,124