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Property (Tables)
12 Months Ended
Dec. 31, 2011
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)
 
2011
 
2010
 
Estimated Useful Life
Land and land improvements
 
$
65.6

 
$
65.2

 
10 - 20 years (1)
Building and building improvements
 
531.7

 
454.9

 
3 - 39 years
Leasehold improvements
 
214.6

 
201.9

 
3 - 24 years
Furniture, fixtures and equipment
 
328.3

 
330.3

 
2 - 7 years
Software and software development costs
 
258.0

 
247.4

 
2 - 4 years
Total property
 
1,398.2

 
1,299.7

 
 
Less accumulated depreciation and amortization
 
(576.3
)
 
(512.9
)
 
 
Property, net
 
$
821.9

 
$
786.8

 
 


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