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Fixed Assets and Lease Commitments
12 Months Ended
Dec. 31, 2012
Fixed Assets and Lease Commitments  
Fixed Assets and Lease Commitments

7.     Fixed Assets and Lease Commitments

        Fixed assets consisted of the following:

 
  December 31,
 
 
  2011   2012  

Building and leasehold improvements

  $ 59.1   $ 74.7  

Office equipment

    34.1     38.9  

Furniture and fixtures

    20.6     16.3  

Land and improvements

    17.9     18.1  

Computer software

    20.5     21.4  
           

Fixed assets, at cost

    152.2     169.4  

Accumulated depreciation and amortization

    (83.1 )   (87.9 )
           

Fixed assets, net

  $ 69.1   $ 81.5  
           

        The Company and its Affiliates lease office space and computer equipment for their operations. At December 31, 2012, the Company's aggregate future minimum payments for operating leases having initial or non-cancelable lease terms greater than one year are payable as follows:

 
  Required Minimum
Payments
 

2013

  $ 26.9  

2014

    26.4  

2015

    24.0  

2016

    18.3  

2017

    16.3  

Thereafter

    64.0  

        Consolidated rent expense for 2010, 2011 and 2012 was $23.3 million, $29.9 million and $30.5 million, respectively.