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Leases
12 Months Ended
Dec. 31, 2012
Leases [Abstract]  
Leases
10.
Leases
 
We lease property and equipment primarily under operating leases. Renewal options exist for substantially all leases. Future minimum payments, by year and in the aggregate, under noncancelable operating leases with any remaining terms consist of the following as of December 31, 2012:
 
 
 
 
 
 
Year
 
 
 
2013
 
$
210.3
 
2014
 
 
160.4
 
2015
 
 
119.0
 
2016
 
 
87.1
 
2017
 
 
66.8
 
Thereafter
 
 
154.6
 
Total minimum lease payments
 
$
798.2
 
 
Rental expense for all operating leases was $245.1, $254.3 and $248.8 for the years ended December 31, 2012, 2011 and 2010, respectively.