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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Property and Equipment
Useful lives are as follows:
Buildings
8 to 33 years
Service vehicles
3 to 13 years
Machinery and equipment
1 to 15 years
Computer equipment
1 to 5 years
Furniture and fixtures
2 to 10 years
Leasehold improvements
The lesser of the economic life or the lease term
Property and equipment consists of the following (in millions):
 
December 31, 2017
 
December 31, 2016
Land and buildings
$
123.5

 
$
115.1

Service vehicles
260.4

 
242.6

Leasehold improvements
74.4

 
63.4

Machinery and equipment
25.7

 
21.6

Computer equipment and software
58.4

 
47.8

Furniture and fixtures
11.8

 
8.2

Construction in progress
20.2

 
23.7

Property and equipment, gross
574.4

 
522.4

Less: accumulated depreciation
(288.1
)
 
(250.4
)
Property and equipment, net
$
286.3

 
$
272.0

Schedule of Property and Equipment and Related Amortization Recorded Under Capital Leases
The gross amounts of land, building and leasehold improvements and related depreciation recorded under financing obligations, included in the table above, were as follows (in millions):
 
December 31, 2017
Land, building and leasehold improvements
$
70.1

Less: accumulated depreciation
(25.7
)
 
$
44.4

The gross amounts of property and equipment and related depreciation recorded under capital leases, included in service vehicles in the table above, were as follows (in millions):
 
December 31, 2017
 
December 31, 2016
Service vehicles
$
107.4

 
$
109.9

Less: accumulated depreciation
(55.2
)
 
(41.8
)
 
$
52.2

 
$
68.1