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Commitments and contingencies (Tables)
12 Months Ended
Dec. 31, 2010
Commitments and contingencies (Tables) [Abstract] 
Future minimum lease payments due under noncancellable operating leases, excluding the facilities of the discontinued operations of PMG and IP
         

Year Ended December 31,

  Minimum  Lease
Payments
 

2011

  $ 35.9  

2012

    29.5  

2013

    27.3  

2014

    24.3  

2015

    23.3  

Thereafter

    55.8  
   

 

 

 
    $ 196.1  
   

 

 

 
Future purchase commitments
         

Year Ended December 31,

  Future
Purchase Commitment
 

2011

  $ 90.1  

2012

    57.0  

2013

    18.8  

2014

    13.7  

2015

    0.4  

Thereafter

    —    
   

 

 

 
    $ 180.0