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Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2014
Commitments and Contingencies  
Schedule of stock repurchases made under open market

  Pursuant to this program, the Company made open market purchases as follows (aggregate cost excludes broker commissions and is reflected in millions):

Period
  Total number
of Shares
Purchased		   Average
Price Paid
per Share		   Aggregate
Cost		  

November 11, 2011 - December 31, 2011

     671,776   $ 48.72   $ 32.7  

January 1, 2012 - December 31, 2012

     459,252     50.27     23.1  

January 1, 2013 - December 31, 2013

     1,159,871     51.83     60.1  

January 1, 2014 - June 30, 2014

     1,137,037     59.20     67.3  
                 
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     3,427,936         $ 183.2  
                 
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Summary of activity related to restructuring liabilities

The following table summarizes the activity related to the restructuring liabilities for the six months ended June 30, 2014, by reportable segment (in thousands):

 
   Commercial   Public
Sector		   Corporate   Consolidated  

Liability for employee termination costs at December 31, 2013

   $ 4,744   $ 4,296   $ 3,429   $ 12,469  

Additions

     738     653     123     1,514  

Payments

     (168 )   (1,813 )   (1,964 )   (3,945 )

Liability released

     —     (377 )   (20 )   (397 )
                   
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Liability for employee termination costs at June 30, 2014

   $ 5,314   $ 2,759   $ 1,568   $ 9,641  
                   
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