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Business Acquisitions, Disposition of Assets, Asset Impairments and Restructuring Charges (Tables)
 12 Months Ended
Dec. 31, 2011
Business Acquisitions Disposition of Assets Asset Impairments and Restructuring Charges [Abstract]  
Aggregate purchase price and allocation of purchase price in other acquisitions

We acquired various solid waste businesses during the years ended December 31, 2011 and 2010. The aggregate cash used in these acquisitions, net of cash acquired, was $42.6 million and $58.9 million, respectively. The purchase price paid for these acquisitions during the year ended December 31 and the preliminary allocation of the purchase price as of December 31 are as follows (in millions):

 

                 
    2011     2010  

Purchase price:

                

Cash used in acquisitions, net of cash acquired

   $ 42.6     $ 58.9  

Fair value of operations surrendered

     48.3       44.0  

Holdbacks

     1.7       0.6  
   

 

 

    

 

 

  

Total

     92.6       103.5  
   

 

 

    

 

 

  

Allocated as follows:

                

Working capital

     7.1       5.1  

Property and equipment

     44.5       40.8  

Other liabilities, net

     (7.8 )      (6.1 ) 
   

 

 

    

 

 

  

Value of assets acquired and liabilities assumed

     43.8       39.8  
   

 

 

    

 

 

  

Excess purchase price to be allocated

   $ 48.8     $ 63.7  
   

 

 

    

 

 

  

Excess purchase price to be allocated as follows:

                
     

Other intangible assets

     33.1       21.9  

Goodwill

     15.7       41.8  
   

 

 

    

 

 

  

Total allocated

   $ 48.8     $ 63.7