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Property and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net
The estimated useful lives of our property and equipment are as follows:
 
 
Buildings and improvements
7 - 40 years
Vehicles
5 - 12 years
Landfill equipment
7 - 10 years
Other equipment
3 - 15 years
Furniture and fixtures
5 - 12 years
A summary of property and equipment as of December 31 is as follows:

 
2013
 
2012
Other land
$
377.6

 
$
376.9

Non-depletable landfill land
164.2

 
166.0

Landfill development costs
5,392.7

 
5,018.0

Vehicles and equipment
5,403.7

 
4,946.4

Buildings and improvements
935.6

 
864.2

Construction-in-progress-landfill
72.5

 
134.5

Construction-in-progress-other
13.3

 
53.3

 
12,359.6

 
11,559.3

Less: Accumulated depreciation, depletion and amortization:
 
 
 
Landfill development costs
(2,160.2
)
 
(1,896.4
)
Vehicles and equipment
(2,883.8
)
 
(2,512.3
)
Buildings and improvements
(278.8
)
 
(240.3
)
 
(5,322.8
)
 
(4,649.0
)
Property and equipment, net
$
7,036.8

 
$
6,910.3