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Property (Tables)
12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment, Net [Abstract]  
Summary of the Property Accounts
A summary of the property accounts at December 31 is presented below:
(in millions)
 
2014
 
2013
 
Estimated Useful Life
Land and land improvements
 
$
17.7

 
$
20.1

 
10 - 20 years (1)
Building and building improvements
 
273.5

 
280.0

 
3 - 39 years
Leasehold improvements
 
219.1

 
218.6

 
3 - 24 years
Furniture, fixtures and equipment
 
360.1

 
352.1

 
2 - 7 years
Software and software development costs
 
379.5

 
321.0

 
2 - 4 years
Total property
 
1,249.9

 
1,191.8

 
 
Less accumulated depreciation and amortization
 
(741.0
)
 
(678.4
)
 
 
Property, net
 
$
508.9

 
$
513.4

 
 

(1) Estimated useful life applies only to land improvements.